2.4.2 beta backports (#10488 )

* version: bump beta * Сaching through docker volume (#10477) * _old codebase_ before docker update * before docker update, testing runnr * docker update, testing the caching * distributed job cargo homes * distributed job cargo homes 2 * distributed job cargo homes 3 * dockerfile with gitlab checkout, audit uses template * dockerfile gets repo in volume * change builds_dir * trying docker cache for repo * repo cached automatically * after script is not concatenated * check sccache non-cacheable reasons nature * watch cache * log sccache * log sccache 2 * debug log sccache * fix debug log sccache * fix debug log sccache 2 * debug log cache 3 * debug log cache 3 * trace log all sccache * test wo cargo cache * test w removed cargo cache * report non-cacheable reasons, cargo cache is back and empty * report non-cacheable reasons, cargo cache is back and empty 2 * report non-cacheable reasons, cargo cache is back and empty 3 * wrap into after_script * restore CI tags `qa` -> `linux-docker` * return to main runners, this will fail until config on runners And Dockerfile won't be updated * typo fix CI lint * return to docker tag * fix win&mac build (#10486) add CARGO_HOME: "${CI_PROJECT_DIR}/.cargo" * fix(extract `timestamp_checked_add` as lib) (#10383) * fix(extract `timestamp_checked_add` as lib) * fix(whisper types): remove unused `EmptyTopics` * fix(time-lib): feature-flag to use time-lib or std This commit adds conditional compilation checks that falls back to `our time-lib` when `time_checked_add` is not available in the standard library Note, `time_checked_add` covers both `checked_add` and `checked_sub` * fix(grumble): use cfg_attr to define rustc feature
2.4.1 beta backports (#10471 )
2019-03-20 09:17:30 +01:00 · 2019-03-19 09:10:36 +01:00 · 2019-02-27 16:33:29 +01:00 · 2019-02-25 15:24:51 +01:00 · 2019-02-21 11:25:29 +01:00 · 2019-02-20 21:09:34 +03:00
920 changed files with 53609 additions and 40273 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,20 +4,17 @@ stages:
  - publish
  - optional

-image:                             parity/rust:gitlab-ci
-
+image:                             parity/rust-parity-ethereum-build:xenial
 variables:
+  GIT_STRATEGY:                    fetch
+  GIT_SUBMODULE_STRATEGY:          recursive
  CI_SERVER_NAME:                  "GitLab CI"
-  CARGO_HOME:                      "${CI_PROJECT_DIR}/.cargo"
-  BUILD_TARGET:                    ubuntu
-  BUILD_ARCH:                      amd64
  CARGO_TARGET:                    x86_64-unknown-linux-gnu

-cache:
-  key:                             "${CI_JOB_NAME}"
-  paths:
-    - ./target
-    - ./.cargo
+.no_git:                           &no_git # disable git strategy
+  variables:
+    GIT_STRATEGY:                  none
+    GIT_SUBMODULE_STRATEGY:        none

 .releaseable_branches:             # list of git refs for building GitLab artifacts (think "pre-release binaries")
  only:                            &releaseable_branches
@@ -26,52 +23,126 @@ cache:
    - tags
    - schedules

-
 .collect_artifacts:                &collect_artifacts
  artifacts:
    name:                          "${CI_JOB_NAME}_${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}"
    when:                          on_success
    expire_in:                     1 mos
    paths:
-    - artifacts/
+      - artifacts/

-.determine_version:                &determine_version
-  - VERSION="$(sed -r -n '1,/^version/s/^version = "([^"]+)".*$/\1/p' Cargo.toml)"
-  - DATE_STR="$(date +%Y%m%d)"
-  - ID_SHORT="$(echo ${CI_COMMIT_SHA} | cut -c 1-7)"
-  - test "${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}" = "nightly" && VERSION="${VERSION}-${ID_SHORT}-${DATE_STR}"
-  - export VERSION
-  - echo "Version = ${VERSION}"
+.docker-cache-status:              &docker-cache-status
+  variables:
+    CARGO_HOME:                    "/cargo/${CI_JOB_NAME}"
+  before_script:
+    - SCCACHE_ERROR_LOG=/builds/parity/parity-ethereum/sccache_error.log RUST_LOG=sccache::server=debug sccache --start-server
+    - sccache -s
+  after_script:
+    - echo "All crate-types:"
+    - grep 'parse_arguments.*--crate-type' sccache_error.log | sed -re 's/.*"--crate-type", "([^"]+)".*/\1/' | sort | uniq -c
+    - echo "Non-cacheable reasons:"
+    - grep CannotCache sccache_error.log | sed -re 's/.*CannotCache\((.+)\).*/\1/' | sort | uniq -c
+  tags:
+    - linux-docker
+
+
+cargo-check 0 3:
+  stage:                           test
+  <<:                              *docker-cache-status
+  script:
+    - time cargo check --target $CARGO_TARGET --locked --no-default-features
+    - sccache -s
+
+cargo-check 1 3:
+  stage:                           test
+  <<:                              *docker-cache-status
+  script:
+    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --no-default-features
+    - sccache -s
+
+cargo-check 2 3:
+  stage:                           test
+  <<:                              *docker-cache-status
+  script:
+    - time cargo check --target $CARGO_TARGET --locked --manifest-path util/io/Cargo.toml --features "mio"
+    - sccache -s
+
+cargo-audit:
+  stage:                           test
+  <<:                              *docker-cache-status
+  script:
+    - cargo audit
+    - sccache -s
+
+validate-chainspecs:
+  stage:                           test
+  <<:                              *docker-cache-status
+  script:
+    - ./scripts/gitlab/validate-chainspecs.sh
+    - sccache -s
+
+test-cpp:
+  stage:                           build
+  <<:                              *docker-cache-status
+  script:
+    - ./scripts/gitlab/test-cpp.sh
+    - sccache -s

 test-linux:
-  stage:                           test
-  variables:
-    RUN_TESTS:                     all
+  stage:                           build
+  <<:                              *docker-cache-status
  script:
-    - scripts/gitlab/test-all.sh stable
-  tags:
-    - rust-stable
+    - ./scripts/gitlab/test-linux.sh
+    - sccache -s

-build-linux:
+build-android:
+  stage:                           build
+  image:                           parity/rust-android:gitlab-ci
+  variables:
+    CARGO_TARGET:                  armv7-linux-androideabi
+  script:
+    - scripts/gitlab/build-linux.sh
+  tags:
+    - linux-docker
+  <<:                              *collect_artifacts
+
+build-linux:                       &build-linux
  stage:                           build
  only:                            *releaseable_branches
-  variables:
-    CARGO_TARGET:                  x86_64-unknown-linux-gnu
+  <<:                              *docker-cache-status
  script:
-    - scripts/gitlab/build-unix.sh
+    - scripts/gitlab/build-linux.sh
+    - sccache -s
  <<:                              *collect_artifacts
-  tags:
-    - rust-stable
+
+build-linux-i386:
+  <<:                              *build-linux
+  image:                           parity/rust-parity-ethereum-build:i386
+  variables:
+    CARGO_TARGET:                  i686-unknown-linux-gnu
+
+build-linux-arm64:
+  <<:                              *build-linux
+  image:                           parity/rust-parity-ethereum-build:arm64
+  variables:
+    CARGO_TARGET:                  aarch64-unknown-linux-gnu
+
+build-linux-armhf:
+  <<:                              *build-linux
+  image:                           parity/rust-parity-ethereum-build:armhf
+  variables:
+    CARGO_TARGET:                  armv7-unknown-linux-gnueabihf

 build-darwin:
  stage:                           build
  only:                            *releaseable_branches
  variables:
    CARGO_TARGET:                  x86_64-apple-darwin
+    CARGO_HOME:                      "${CI_PROJECT_DIR}/.cargo"
    CC:                            gcc
    CXX:                           g++
  script:
-    - scripts/gitlab/build-unix.sh
+    - scripts/gitlab/build-linux.sh
  tags:
    - rust-osx
  <<:                              *collect_artifacts
@@ -81,16 +152,17 @@ build-windows:
  only:                            *releaseable_branches
  variables:
    CARGO_TARGET:                  x86_64-pc-windows-msvc
+    CARGO_HOME:                      "${CI_PROJECT_DIR}/.cargo"
  script:
    - sh scripts/gitlab/build-windows.sh
  tags:
-   - rust-windows
+    - rust-windows
  <<:                              *collect_artifacts

 publish-docker:
  stage:                           publish
  only:                            *releaseable_branches
-  cache: {}
+  cache:                           {}
  dependencies:
    - build-linux
  tags:
@@ -98,63 +170,91 @@ publish-docker:
  script:
    - scripts/gitlab/publish-docker.sh parity

-publish-awss3:
+publish-snap:                      &publish-snap
  stage:                           publish
  only:                            *releaseable_branches
-  cache: {}
+  image:                           snapcore/snapcraft
+  variables:
+    BUILD_ARCH:                    amd64
+  cache:                           {}
+  dependencies:
+    - build-linux
+  tags:
+    - linux-docker
+  script:
+    - scripts/gitlab/publish-snap.sh
+  <<:                              *collect_artifacts
+
+publish-snap-i386:
+  <<:                              *publish-snap
+  variables:
+    BUILD_ARCH:                    i386
+  dependencies:
+    - build-linux-i386
+
+publish-snap-arm64:
+  <<:                              *publish-snap
+  variables:
+    BUILD_ARCH:                    arm64
+  dependencies:
+    - build-linux-arm64
+
+publish-snap-armhf:
+  <<:                              *publish-snap
+  variables:
+    BUILD_ARCH:                    armhf
+  dependencies:
+    - build-linux-armhf
+
+publish-onchain:
+  stage:                           publish
+  only:                            *releaseable_branches
+  cache:                           {}
  dependencies:
    - build-linux
    - build-darwin
    - build-windows
-  before_script:                   *determine_version
  script:
-    - scripts/gitlab/publish-awss3.sh
+    - scripts/gitlab/publish-onchain.sh
  tags:
-    - shell
+    - linux-docker

-docs-jsonrpc:
-  stage:                            optional
+publish-awss3-release:
+  image:                           parity/awscli:latest
+  stage:                           publish
+  only:                            *releaseable_branches
+  <<:                              *no_git
+  cache:                           {}
+  dependencies:
+    - build-linux
+    - build-darwin
+    - build-windows
+  script:
+    - echo "__________Push binaries to AWS S3____________"
+    - case "${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}" in
+       (beta|stable|nightly)
+         export BUCKET=releases.parity.io/ethereum;
+         ;;
+       (*)
+         export BUCKET=builds-parity;
+         ;;
+     esac
+    - aws s3 sync ./artifacts s3://${BUCKET}/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}}/
+    - echo "__________Read from S3____________"
+    - aws s3 ls s3://${BUCKET}/${SCHEDULE_TAG:-${CI_COMMIT_REF_NAME}} --recursive --human-readable --summarize
+  tags:
+    - linux-docker
+
+publish-docs:
+  stage:                            publish
+  # <<:                              *no_git
  only:
    - tags
  except:
    - nightly
-  cache: {}
+  cache:                            {}
  script:
-    - scripts/gitlab/docs-jsonrpc.sh
+    - scripts/gitlab/publish-docs.sh
  tags:
-    - shell
+    - linux-docker

-cargo-audit:
-  stage:                           optional
-  script:
-    - scripts/gitlab/cargo-audit.sh
-  tags:
-    - rust-stable
-
-build-android:
-  stage:                           optional
-  image:                           parity/rust-android:gitlab-ci
-  variables:
-    CARGO_TARGET:                  armv7-linux-androideabi
-  script:
-    - scripts/gitlab/build-unix.sh
-  tags:
-    - rust-arm
-
-test-beta:
-  stage:                           optional
-  variables:
-    RUN_TESTS:                     cargo
-  script:
-    - scripts/gitlab/test-all.sh beta
-  tags:
-    - rust-beta
-
-test-nightly:
-  stage:                           optional
-  variables:
-    RUN_TESTS:                     all
-  script:
-    - scripts/gitlab/test-all.sh nightly
-  tags:
-    - rust-nightly
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,16 +2,15 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.2.0"
+version = "2.4.2"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
 blooms-db = { path = "util/blooms-db" }
 log = "0.4"
-env_logger = "0.5"
 rustc-hex = "1.0"
-docopt = "0.8"
+docopt = "1.0"
 clap = "2"
 term_size = "0.3"
 textwrap = "0.9"
@@ -20,8 +19,8 @@ number_prefix = "0.2"
 rpassword = "1.0"
 semver = "0.9"
 ansi_term = "0.10"
-parking_lot = "0.6"
-regex = "0.2"
+parking_lot = "0.7"
+regex = "1.0"
 atty = "0.2.8"
 toml = "0.4"
 serde = "1.0"
@@ -30,45 +29,49 @@ serde_derive = "1.0"
 futures = "0.1"
 fdlimit = "0.1"
 ctrlc = { git = "https://github.com/paritytech/rust-ctrlc.git" }
-jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-2.2" }
-ethcore = { path = "ethcore", features = ["parity"] }
+jsonrpc-core = "10.0.1"
 parity-bytes = "0.1"
+common-types = { path = "ethcore/types" }
+ethcore = { path = "ethcore", features = ["parity"] }
+ethcore-accounts = { path = "accounts", optional = true }
+ethcore-blockchain = { path = "ethcore/blockchain" }
+ethcore-call-contract = { path = "ethcore/call-contract"}
+ethcore-db = { path = "ethcore/db" }
 ethcore-io = { path = "util/io" }
 ethcore-light = { path = "ethcore/light" }
-ethcore-logger = { path = "logger" }
+ethcore-logger = { path = "parity/logger" }
 ethcore-miner = { path = "miner" }
 ethcore-network = { path = "util/network" }
 ethcore-private-tx = { path = "ethcore/private-tx" }
 ethcore-service = { path = "ethcore/service" }
 ethcore-sync = { path = "ethcore/sync" }
-ethcore-transaction = { path = "ethcore/transaction" }
 ethereum-types = "0.4"
-node-filter = { path = "ethcore/node_filter" }
-ethkey = { path = "ethkey" }
+ethkey = { path = "accounts/ethkey" }
+ethstore = { path = "accounts/ethstore" }
+node-filter = { path = "ethcore/node-filter" }
 rlp = { version = "0.3.0", features = ["ethereum"] }
-rpc-cli = { path = "rpc_cli" }
-parity-hash-fetch = { path = "hash-fetch" }
+cli-signer= { path = "cli-signer" }
+parity-daemonize = "0.3"
+parity-hash-fetch = { path = "updater/hash-fetch" }
 parity-ipfs-api = { path = "ipfs" }
-parity-local-store = { path = "local-store" }
+parity-local-store = { path = "miner/local-store" }
 parity-runtime = { path = "util/runtime" }
 parity-rpc = { path = "rpc" }
-parity-rpc-client = { path = "rpc_client" }
 parity-updater = { path = "updater" }
 parity-version = { path = "util/version" }
 parity-whisper = { path = "whisper" }
 parity-path = "0.1"
 dir = { path = "util/dir" }
-panic_hook = { path = "util/panic_hook" }
+panic_hook = { path = "util/panic-hook" }
 keccak-hash = "0.1"
 migration-rocksdb = { path = "util/migration-rocksdb" }
 kvdb = "0.1"
 kvdb-rocksdb = "0.1.3"
 journaldb = { path = "util/journaldb" }
-mem = { path = "util/mem" }

-ethcore-secretstore = { path = "secret_store", optional = true }
+ethcore-secretstore = { path = "secret-store", optional = true }

-registrar = { path = "registrar" }
+registrar = { path = "util/registrar" }

 [build-dependencies]
 rustc_version = "0.2"
@@ -78,22 +81,22 @@ pretty_assertions = "0.1"
 ipnetwork = "0.12.6"
 tempdir = "0.3"
 fake-fetch = { path = "util/fake-fetch" }
+lazy_static = "1.2.0"

 [target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3.4", features = ["winsock2", "winuser", "shellapi"] }

-[target.'cfg(not(windows))'.dependencies]
-daemonize = { git = "https://github.com/paritytech/daemonize" }
-
 [features]
+default = ["accounts"]
+accounts = ["ethcore-accounts", "parity-rpc/accounts"]
 miner-debug = ["ethcore/miner-debug"]
 json-tests = ["ethcore/json-tests"]
-ci-skip-issue = ["ethcore/ci-skip-issue"]
+ci-skip-tests = ["ethcore/ci-skip-tests"]
 test-heavy = ["ethcore/test-heavy"]
 evm-debug = ["ethcore/evm-debug"]
 evm-debug-tests = ["ethcore/evm-debug-tests"]
 slow-blocks = ["ethcore/slow-blocks"]
-secretstore = ["ethcore-secretstore"]
+secretstore = ["ethcore-secretstore", "ethcore-secretstore/accounts"]
 final = ["parity-version/final"]
 deadlock_detection = ["parking_lot/deadlock_detection"]
 # to create a memory profile (requires nightly rust), use e.g.
@@ -121,19 +124,23 @@ name = "parity"
 debug = false

 [workspace]
+# This should only list projects that are not
+# in the dependency tree in any other way
+# (i.e. pretty much only standalone CLI tools)
 members = [
+	"accounts/ethkey/cli",
+	"accounts/ethstore/cli",
 	"chainspec",
 	"ethcore/wasm/run",
-	"ethcore/types",
-	"ethkey/cli",
-	"ethstore/cli",
 	"evmbin",
-	"miner",
 	"parity-clib",
-	"whisper",
 	"whisper/cli",
 	"util/triehash-ethereum",
 	"util/keccak-hasher",
 	"util/patricia-trie-ethereum",
 	"util/fastmap",
-]
+	"util/time-utils"
+]
+
+[patch.crates-io]
+heapsize = { git = "https://github.com/cheme/heapsize.git", branch = "ec-macfix" }
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 ![Parity Ethereum](docs/logo-parity-ethereum.svg)

-## The fastest and most advanced Ethereum client.
+<h2 align="center">The Fastest and most Advanced Ethereum Client.</h2>

 <p align="center"><strong><a href="https://github.com/paritytech/parity-ethereum/releases/latest">» Download the latest release «</a></strong></p>

@@ -27,7 +27,7 @@ Parity Ethereum's current beta-release is 2.1. You can download it at [the relea

 ## Build Dependencies

-Parity Ethereum requires **Rust version 1.29.x** to build.
+Parity Ethereum requires **latest stable Rust version** to build.

 We recommend installing Rust through [rustup](https://www.rustup.rs/). If you don't already have `rustup`, you can install it like this:

@@ -125,7 +125,8 @@ To start Parity Ethereum as a regular user using `systemd` init:

 1. Copy `./scripts/parity.service` to your
 `systemd` user directory (usually `~/.config/systemd/user`).
-2. To configure Parity Ethereum, write a `/etc/parity/config.toml` config file, see [Configuring Parity Ethereum](https://paritytech.github.io/wiki/Configuring-Parity) for details.
+2. Copy release to bin folder, write `sudo install ./target/release/parity /usr/bin/parity`
+3. To configure Parity Ethereum, write a `/etc/parity/config.toml` config file, see [Configuring Parity Ethereum](https://paritytech.github.io/wiki/Configuring-Parity) for details.

 ## Parity Ethereum toolchain

@@ -133,8 +134,8 @@ In addition to the Parity Ethereum client, there are additional tools in this re

 - [evmbin](https://github.com/paritytech/parity-ethereum/blob/master/evmbin/) - EVM implementation for Parity Ethereum.
 - [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum function calls encoding.
- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/ethstore/) - Parity Ethereum key management.
- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/ethkey/) - Parity Ethereum keys generator.
+- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethstore) - Parity Ethereum key management.
+- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethkey) - Parity Ethereum keys generator.
 - [whisper](https://github.com/paritytech/parity-ethereum/blob/master/whisper/) - Implementation of Whisper-v2 PoC.

 ## Join the chat!
--- a/accounts/Cargo.toml
+++ b/accounts/Cargo.toml
@@ -0,0 +1,28 @@
+[package]
+description = "Account management for Parity Ethereum"
+homepage = "http://parity.io"
+license = "GPL-3.0"
+name = "ethcore-accounts"
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+
+[dependencies]
+common-types = { path = "../ethcore/types" }
+ethkey = { path = "ethkey" }
+ethstore = { path = "ethstore" }
+log = "0.4"
+parking_lot = "0.7"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
+
+[target.'cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))'.dependencies]
+hardware-wallet = { path = "hw" }
+
+[target.'cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))'.dependencies]
+fake-hardware-wallet = { path = "fake-hardware-wallet" }
+
+[dev-dependencies]
+ethereum-types = "0.4"
+tempdir = "0.3"
--- a/accounts/ethkey/.gitignore
+++ b/accounts/ethkey/.gitignore
--- a/accounts/ethkey/.travis.yml
+++ b/accounts/ethkey/.travis.yml
--- a/accounts/ethkey/Cargo.toml
+++ b/accounts/ethkey/Cargo.toml
@@ -6,12 +6,12 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 byteorder = "1.0"
 edit-distance = "2.0"
-parity-crypto = "0.2"
+parity-crypto = "0.3.0"
 eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
 ethereum-types = "0.4"
 lazy_static = "1.0"
 log = "0.4"
-mem = { path = "../util/mem" }
+memzero = { path = "../../util/memzero" }
 parity-wordlist = "1.2"
 quick-error = "1.2.2"
 rand = "0.4"
--- a/accounts/ethkey/README.md
+++ b/accounts/ethkey/README.md
@@ -6,7 +6,7 @@ Parity Ethereum keys generator.

 ```
 Parity Ethereum keys generator.
-  Copyright 2015-2018 Parity Technologies (UK) Ltd.
+  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
    ethkey info <secret-or-phrase> [options]
@@ -216,6 +216,6 @@ _This project is a part of the Parity Ethereum toolchain._

 - [evmbin](https://github.com/paritytech/parity-ethereum/blob/master/evmbin/) - EVM implementation for Parity Ethereum.
 - [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum function calls encoding.
- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/ethstore/) - Parity Ethereum key management.
- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/ethkey/) - Parity Ethereum keys generator.
+- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethstore) - Parity Ethereum key management.
+- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethkey) - Parity Ethereum keys generator.
 - [whisper](https://github.com/paritytech/parity-ethereum/blob/master/whisper/) - Implementation of Whisper-v2 PoC.
--- a/accounts/ethkey/cli/Cargo.toml
+++ b/accounts/ethkey/cli/Cargo.toml
@@ -4,10 +4,10 @@ version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
-docopt = "0.8"
+docopt = "1.0"
 env_logger = "0.5"
 ethkey = { path = "../" }
-panic_hook = { path = "../../util/panic_hook" }
+panic_hook = { path = "../../../util/panic-hook" }
 parity-wordlist="1.2"
 rustc-hex = "1.0"
 serde = "1.0"
--- a/accounts/ethkey/cli/src/main.rs
+++ b/accounts/ethkey/cli/src/main.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate docopt;
 extern crate env_logger;
@@ -35,7 +35,7 @@ use rustc_hex::{FromHex, FromHexError};

 const USAGE: &'static str = r#"
 Parity Ethereum keys generator.
-  Copyright 2015-2018 Parity Technologies (UK) Ltd.
+  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
    ethkey info <secret-or-phrase> [options]
@@ -168,7 +168,7 @@ fn main() {
 		Ok(ok) => println!("{}", ok),
 		Err(Error::Docopt(ref e)) => e.exit(),
 		Err(err) => {
-			println!("{}", err);
+			eprintln!("{}", err);
 			process::exit(1);
 		}
 	}
--- a/accounts/ethkey/src/brain.rs
+++ b/accounts/ethkey/src/brain.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use keccak::Keccak256;
 use super::{KeyPair, Generator, Secret};
--- a/accounts/ethkey/src/brain_prefix.rs
+++ b/accounts/ethkey/src/brain_prefix.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use super::{Generator, KeyPair, Error, Brain};
 use parity_wordlist as wordlist;
--- a/accounts/ethkey/src/brain_recover.rs
+++ b/accounts/ethkey/src/brain_recover.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::collections::HashSet;

--- a/accounts/ethkey/src/crypto.rs
+++ b/accounts/ethkey/src/crypto.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use secp256k1;
 use std::io;
--- a/accounts/ethkey/src/error.rs
+++ b/accounts/ethkey/src/error.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{fmt, error};

--- a/accounts/ethkey/src/extended.rs
+++ b/accounts/ethkey/src/extended.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Extended keys

--- a/accounts/ethkey/src/keccak.rs
+++ b/accounts/ethkey/src/keccak.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use tiny_keccak::Keccak;

--- a/accounts/ethkey/src/keypair.rs
+++ b/accounts/ethkey/src/keypair.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use secp256k1::key;
--- a/accounts/ethkey/src/lib.rs
+++ b/accounts/ethkey/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 // #![warn(missing_docs)]

@@ -20,7 +20,7 @@ extern crate byteorder;
 extern crate edit_distance;
 extern crate parity_crypto;
 extern crate ethereum_types;
-extern crate mem;
+extern crate memzero;
 extern crate parity_wordlist;
 #[macro_use]
 extern crate quick_error;
--- a/accounts/ethkey/src/math.rs
+++ b/accounts/ethkey/src/math.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use super::{SECP256K1, Public, Secret, Error};
 use secp256k1::key;
--- a/accounts/ethkey/src/password.rs
+++ b/accounts/ethkey/src/password.rs
@@ -1,18 +1,18 @@
-// Copyright 2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{fmt, ptr};

@@ -57,4 +57,3 @@ impl<'a> From<&'a str> for Password {
 		Password::from(String::from(s))
 	}
 }
-
--- a/accounts/ethkey/src/prefix.rs
+++ b/accounts/ethkey/src/prefix.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use super::{Random, Generator, KeyPair, Error};

--- a/accounts/ethkey/src/random.rs
+++ b/accounts/ethkey/src/random.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use rand::os::OsRng;
 use super::{Generator, KeyPair, SECP256K1};
--- a/accounts/ethkey/src/secret.rs
+++ b/accounts/ethkey/src/secret.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use std::ops::Deref;
@@ -21,7 +21,7 @@ use rustc_hex::ToHex;
 use secp256k1::constants::{SECRET_KEY_SIZE as SECP256K1_SECRET_KEY_SIZE};
 use secp256k1::key;
 use ethereum_types::H256;
-use mem::Memzero;
+use memzero::Memzero;
 use {Error, SECP256K1};

 #[derive(Clone, PartialEq, Eq)]
--- a/accounts/ethkey/src/signature.rs
+++ b/accounts/ethkey/src/signature.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::ops::{Deref, DerefMut};
 use std::cmp::PartialEq;
--- a/accounts/ethstore/.editorconfig
+++ b/accounts/ethstore/.editorconfig
--- a/accounts/ethstore/.gitignore
+++ b/accounts/ethstore/.gitignore
--- a/accounts/ethstore/.travis.yml
+++ b/accounts/ethstore/.travis.yml
--- a/accounts/ethstore/Cargo.toml
+++ b/accounts/ethstore/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ethstore"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
@@ -15,13 +15,14 @@ rustc-hex = "1.0"
 tiny-keccak = "1.4"
 time = "0.1.34"
 itertools = "0.5"
-parking_lot = "0.6"
-parity-crypto = "0.2"
+parking_lot = "0.7"
+parity-crypto = "0.3.0"
 ethereum-types = "0.4"
-dir = { path = "../util/dir" }
+dir = { path = "../../util/dir" }
 smallvec = "0.6"
 parity-wordlist = "1.0"
 tempdir = "0.3"
+lazy_static = "1.2.0"

 [dev-dependencies]
 matches = "0.1"
--- a/accounts/ethstore/README.md
+++ b/accounts/ethstore/README.md
@@ -6,7 +6,7 @@ Parity Ethereum key management.

 ```
 Parity Ethereum key management tool.
-  Copyright 2015-2018 Parity Technologies (UK) Ltd.
+  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
    ethstore insert <secret> <password> [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
@@ -335,6 +335,6 @@ _This project is a part of the Parity Ethereum toolchain._

 - [evmbin](https://github.com/paritytech/parity-ethereum/blob/master/evmbin/) - EVM implementation for Parity Ethereum.
 - [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum function calls encoding.
- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/ethstore/) - Parity Ethereum key management.
- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/ethkey/) - Parity Ethereum keys generator.
+- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethstore) - Parity Ethereum key management.
+- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethkey) - Parity Ethereum keys generator.
 - [whisper](https://github.com/paritytech/parity-ethereum/blob/master/whisper/) - Implementation of Whisper-v2 PoC.
--- a/accounts/ethstore/cli/Cargo.toml
+++ b/accounts/ethstore/cli/Cargo.toml
@@ -1,18 +1,19 @@
 [package]
 name = "ethstore-cli"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
-docopt = "0.8"
+docopt = "1.0"
+env_logger = "0.5"
 num_cpus = "1.6"
 rustc-hex = "1.0"
 serde = "1.0"
 serde_derive = "1.0"
-parking_lot = "0.6"
+parking_lot = "0.7"
 ethstore = { path = "../" }
-dir = { path = '../../util/dir' }
-panic_hook = { path = "../../util/panic_hook" }
+dir = { path = '../../../util/dir' }
+panic_hook = { path = "../../../util/panic-hook" }

 [[bin]]
 name = "ethstore"
--- a/accounts/ethstore/cli/src/crack.rs
+++ b/accounts/ethstore/cli/src/crack.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{cmp, thread};
 use std::sync::Arc;
--- a/accounts/ethstore/cli/src/main.rs
+++ b/accounts/ethstore/cli/src/main.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate dir;
 extern crate docopt;
@@ -23,6 +23,8 @@ extern crate parking_lot;
 extern crate rustc_hex;
 extern crate serde;

+extern crate env_logger;
+
 #[macro_use]
 extern crate serde_derive;

@@ -39,13 +41,13 @@ mod crack;

 pub const USAGE: &'static str = r#"
 Parity Ethereum key management tool.
-  Copyright 2015-2018 Parity Technologies (UK) Ltd.
+  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
    ethstore insert <secret> <password> [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
    ethstore change-pwd <address> <old-pwd> <new-pwd> [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
    ethstore list [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
-    ethstore import [--src DIR] [--dir DIR]
+    ethstore import [<password>] [--src DIR] [--dir DIR]
    ethstore import-wallet <path> <password> [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
    ethstore find-wallet-pass <path> <password>
    ethstore remove <address> <password> [--dir DIR] [--vault VAULT] [--vault-pwd VAULTPWD]
@@ -146,30 +148,34 @@ impl fmt::Display for Error {

 fn main() {
 	panic_hook::set_abort();
+	if env::var("RUST_LOG").is_err() {
+		env::set_var("RUST_LOG", "warn")
+	}
+	env_logger::try_init().expect("Logger initialized only once.");

 	match execute(env::args()) {
 		Ok(result) => println!("{}", result),
 		Err(Error::Docopt(ref e)) => e.exit(),
 		Err(err) => {
-			println!("{}", err);
+			eprintln!("{}", err);
 			process::exit(1);
 		}
 	}
 }

-fn key_dir(location: &str) -> Result<Box<KeyDirectory>, Error> {
-	let dir: Box<KeyDirectory> = match location {
-		"geth" => Box::new(RootDiskDirectory::create(dir::geth(false))?),
-		"geth-test" => Box::new(RootDiskDirectory::create(dir::geth(true))?),
+fn key_dir(location: &str, password: Option<Password>) -> Result<Box<KeyDirectory>, Error> {
+	let dir: RootDiskDirectory = match location {
+		"geth" => RootDiskDirectory::create(dir::geth(false))?,
+		"geth-test" => RootDiskDirectory::create(dir::geth(true))?,
 		path if path.starts_with("parity") => {
 			let chain = path.split('-').nth(1).unwrap_or("ethereum");
 			let path = dir::parity(chain);
-			Box::new(RootDiskDirectory::create(path)?)
+			RootDiskDirectory::create(path)?
 		},
-		path => Box::new(RootDiskDirectory::create(path)?),
+		path => RootDiskDirectory::create(path)?,
 	};

-	Ok(dir)
+	Ok(Box::new(dir.with_password(password)))
 }

 fn open_args_vault(store: &EthStore, args: &Args) -> Result<SecretVaultRef, Error> {
@@ -202,9 +208,9 @@ fn format_vaults(vaults: &[String]) -> String {
 }

 fn load_password(path: &str) -> Result<Password, Error> {
-	let mut file = fs::File::open(path).map_err(|e| ethstore::Error::Custom(format!("Error opening password file {}: {}", path, e)))?;
+	let mut file = fs::File::open(path).map_err(|e| ethstore::Error::Custom(format!("Error opening password file '{}': {}", path, e)))?;
 	let mut password = String::new();
-	file.read_to_string(&mut password).map_err(|e| ethstore::Error::Custom(format!("Error reading password file {}: {}", path, e)))?;
+	file.read_to_string(&mut password).map_err(|e| ethstore::Error::Custom(format!("Error reading password file '{}': {}", path, e)))?;
 	// drop EOF
 	let _ = password.pop();
 	Ok(password.into())
@@ -214,7 +220,7 @@ fn execute<S, I>(command: I) -> Result<String, Error> where I: IntoIterator<Item
 	let args: Args = Docopt::new(USAGE)
 		.and_then(|d| d.argv(command).deserialize())?;

-	let store = EthStore::open(key_dir(&args.flag_dir)?)?;
+	let store = EthStore::open(key_dir(&args.flag_dir, None)?)?;

 	return if args.cmd_insert {
 		let secret = args.arg_secret.parse().map_err(|_| ethstore::Error::InvalidSecret)?;
@@ -239,8 +245,13 @@ fn execute<S, I>(command: I) -> Result<String, Error> where I: IntoIterator<Item
 			.collect();
 		Ok(format_accounts(&accounts))
 	} else if args.cmd_import {
-		let src = key_dir(&args.flag_src)?;
-		let dst = key_dir(&args.flag_dir)?;
+		let password = match args.arg_password.as_ref() {
+			"" => None,
+			_ => Some(load_password(&args.arg_password)?)
+		};
+		let src = key_dir(&args.flag_src, password)?;
+		let dst = key_dir(&args.flag_dir, None)?;
+
 		let accounts = import_accounts(&*src, &*dst)?;
 		Ok(format_accounts(&accounts))
 	} else if args.cmd_import_wallet {
--- a/accounts/ethstore/cli/tests/cli.rs
+++ b/accounts/ethstore/cli/tests/cli.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate tempdir;
 use std::process::Command;
--- a/accounts/ethstore/src/account/cipher.rs
+++ b/accounts/ethstore/src/account/cipher.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use json;

--- a/accounts/ethstore/src/account/crypto.rs
+++ b/accounts/ethstore/src/account/crypto.rs
@@ -1,20 +1,21 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::str;
+use std::num::NonZeroU32;
 use ethkey::{Password, Secret};
 use {json, Error, crypto};
 use crypto::Keccak256;
@@ -73,18 +74,19 @@ impl From<Crypto> for String {

 impl Crypto {
 	/// Encrypt account secret
-	pub fn with_secret(secret: &Secret, password: &Password, iterations: u32) -> Result<Self, crypto::Error> {
+	pub fn with_secret(secret: &Secret, password: &Password, iterations: NonZeroU32) -> Result<Self, crypto::Error> {
 		Crypto::with_plain(&*secret, password, iterations)
 	}

 	/// Encrypt custom plain data
-	pub fn with_plain(plain: &[u8], password: &Password, iterations: u32) -> Result<Self, crypto::Error> {
+	pub fn with_plain(plain: &[u8], password: &Password, iterations: NonZeroU32) -> Result<Self, crypto::Error> {
 		let salt: [u8; 32] = Random::random();
 		let iv: [u8; 16] = Random::random();

 		// two parts of derived key
 		// DK = [ DK[0..15] DK[16..31] ] = [derived_left_bits, derived_right_bits]
-		let (derived_left_bits, derived_right_bits) = crypto::derive_key_iterations(password.as_bytes(), &salt, iterations);
+		let (derived_left_bits, derived_right_bits) =
+			crypto::derive_key_iterations(password.as_bytes(), &salt, iterations);

 		// preallocated (on-stack in case of `Secret`) buffer to hold cipher
 		// length = length(plain) as we are using CTR-approach
@@ -104,7 +106,7 @@ impl Crypto {
 			ciphertext: ciphertext.into_vec(),
 			kdf: Kdf::Pbkdf2(Pbkdf2 {
 				dklen: crypto::KEY_LENGTH as u32,
-				salt: salt,
+				salt: salt.to_vec(),
 				c: iterations,
 				prf: Prf::HmacSha256,
 			}),
@@ -158,13 +160,17 @@ impl Crypto {
 #[cfg(test)]
 mod tests {
 	use ethkey::{Generator, Random};
-	use super::{Crypto, Error};
+	use super::{Crypto, Error, NonZeroU32};
+
+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(10240).expect("10240 > 0; qed");
+	}

 	#[test]
 	fn crypto_with_secret_create() {
 		let keypair = Random.generate().unwrap();
 		let passwd = "this is sparta".into();
-		let crypto = Crypto::with_secret(keypair.secret(), &passwd, 10240).unwrap();
+		let crypto = Crypto::with_secret(keypair.secret(), &passwd, *ITERATIONS).unwrap();
 		let secret = crypto.secret(&passwd).unwrap();
 		assert_eq!(keypair.secret(), &secret);
 	}
@@ -172,7 +178,7 @@ mod tests {
 	#[test]
 	fn crypto_with_secret_invalid_password() {
 		let keypair = Random.generate().unwrap();
-		let crypto = Crypto::with_secret(keypair.secret(), &"this is sparta".into(), 10240).unwrap();
+		let crypto = Crypto::with_secret(keypair.secret(), &"this is sparta".into(), *ITERATIONS).unwrap();
 		assert_matches!(crypto.secret(&"this is sparta!".into()), Err(Error::InvalidPassword))
 	}

@@ -180,7 +186,7 @@ mod tests {
 	fn crypto_with_null_plain_data() {
 		let original_data = b"";
 		let passwd = "this is sparta".into();
-		let crypto = Crypto::with_plain(&original_data[..], &passwd, 10240).unwrap();
+		let crypto = Crypto::with_plain(&original_data[..], &passwd, *ITERATIONS).unwrap();
 		let decrypted_data = crypto.decrypt(&passwd).unwrap();
 		assert_eq!(original_data[..], *decrypted_data);
 	}
@@ -189,7 +195,7 @@ mod tests {
 	fn crypto_with_tiny_plain_data() {
 		let original_data = b"{}";
 		let passwd = "this is sparta".into();
-		let crypto = Crypto::with_plain(&original_data[..], &passwd, 10240).unwrap();
+		let crypto = Crypto::with_plain(&original_data[..], &passwd, *ITERATIONS).unwrap();
 		let decrypted_data = crypto.decrypt(&passwd).unwrap();
 		assert_eq!(original_data[..], *decrypted_data);
 	}
@@ -198,7 +204,7 @@ mod tests {
 	fn crypto_with_huge_plain_data() {
 		let original_data: Vec<_> = (1..65536).map(|i| (i % 256) as u8).collect();
 		let passwd = "this is sparta".into();
-		let crypto = Crypto::with_plain(&original_data, &passwd, 10240).unwrap();
+		let crypto = Crypto::with_plain(&original_data, &passwd, *ITERATIONS).unwrap();
 		let decrypted_data = crypto.decrypt(&passwd).unwrap();
 		assert_eq!(&original_data, &decrypted_data);
 	}
--- a/accounts/ethstore/src/account/kdf.rs
+++ b/accounts/ethstore/src/account/kdf.rs
@@ -1,20 +1,21 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use json;
+use std::num::NonZeroU32;

 #[derive(Debug, PartialEq, Clone)]
 pub enum Prf {
@@ -23,10 +24,10 @@ pub enum Prf {

 #[derive(Debug, PartialEq, Clone)]
 pub struct Pbkdf2 {
-	pub c: u32,
+	pub c: NonZeroU32,
 	pub dklen: u32,
 	pub prf: Prf,
-	pub salt: [u8; 32],
+	pub salt: Vec<u8>,
 }

 #[derive(Debug, PartialEq, Clone)]
@@ -35,7 +36,7 @@ pub struct Scrypt {
 	pub p: u32,
 	pub n: u32,
 	pub r: u32,
-	pub salt: [u8; 32],
+	pub salt: Vec<u8>,
 }

 #[derive(Debug, PartialEq, Clone)]
--- a/accounts/ethstore/src/account/mod.rs
+++ b/accounts/ethstore/src/account/mod.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 mod cipher;
 mod crypto;
--- a/accounts/ethstore/src/account/safe_account.rs
+++ b/accounts/ethstore/src/account/safe_account.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use ethkey::{self, KeyPair, sign, Address, Password, Signature, Message, Public, Secret};
 use ethkey::crypto::ecdh::agree;
@@ -20,6 +20,7 @@ use {json, Error};
 use account::Version;
 use crypto;
 use super::crypto::Crypto;
+use std::num::NonZeroU32;

 /// Account representation.
 #[derive(Debug, PartialEq, Clone)]
@@ -45,7 +46,7 @@ impl Into<json::KeyFile> for SafeAccount {
 		json::KeyFile {
 			id: From::from(self.id),
 			version: self.version.into(),
-			address: self.address.into(),
+			address: Some(self.address.into()),
 			crypto: self.crypto.into(),
 			name: Some(self.name.into()),
 			meta: Some(self.meta.into()),
@@ -59,7 +60,7 @@ impl SafeAccount {
 		keypair: &KeyPair,
 		id: [u8; 16],
 		password: &Password,
-		iterations: u32,
+		iterations: NonZeroU32,
 		name: String,
 		meta: String
 	) -> Result<Self, crypto::Error> {
@@ -77,16 +78,43 @@ impl SafeAccount {
 	/// Create a new `SafeAccount` from the given `json`; if it was read from a
 	/// file, the `filename` should be `Some` name. If it is as yet anonymous, then it
 	/// can be left `None`.
-	pub fn from_file(json: json::KeyFile, filename: Option<String>) -> Self {
-		SafeAccount {
+	/// In case `password` is provided, we will attempt to read the secret from the keyfile
+	/// and derive the address from it instead of reading it directly.
+	/// Providing password is required for `json::KeyFile`s with no address.
+	pub fn from_file(json: json::KeyFile, filename: Option<String>, password: &Option<Password>) -> Result<Self, Error> {
+		let crypto = Crypto::from(json.crypto);
+		let address = match (password, &json.address) {
+			(None, Some(json_address)) => json_address.into(),
+			(None, None) => Err(Error::Custom(
+				"This keystore does not contain address. You need to provide password to import it".into()))?,
+			(Some(password), json_address) => {
+				let derived_address = KeyPair::from_secret(
+					crypto.secret(&password).map_err(|_| Error::InvalidPassword)?
+				)?.address();
+
+				match json_address {
+					Some(json_address) => {
+						let json_address = json_address.into();
+						if derived_address != json_address {
+							warn!("Detected address mismatch when opening an account. Derived: {:?}, in json got: {:?}",
+								derived_address, json_address);
+						}
+					},
+					_ => {},
+				}
+				derived_address
+			}
+		};
+
+		Ok(SafeAccount {
 			id: json.id.into(),
 			version: json.version.into(),
-			address: json.address.into(),
-			crypto: json.crypto.into(),
-			filename: filename,
+			address,
+			crypto,
+			filename,
 			name: json.name.unwrap_or(String::new()),
 			meta: json.meta.unwrap_or("{}".to_owned()),
-		}
+		})
 	}

 	/// Create a new `SafeAccount` from the given vault `json`; if it was read from a
@@ -97,18 +125,18 @@ impl SafeAccount {
 		let meta_plain = meta_crypto.decrypt(password)?;
 		let meta_plain = json::VaultKeyMeta::load(&meta_plain).map_err(|e| Error::Custom(format!("{:?}", e)))?;

-		Ok(SafeAccount::from_file(json::KeyFile {
+		SafeAccount::from_file(json::KeyFile {
 			id: json.id,
 			version: json.version,
 			crypto: json.crypto,
-			address: meta_plain.address,
+			address: Some(meta_plain.address),
 			name: meta_plain.name,
 			meta: meta_plain.meta,
-		}, filename))
+		}, filename, &None)
 	}

 	/// Create a new `VaultKeyFile` from the given `self`
-	pub fn into_vault_file(self, iterations: u32, password: &Password) -> Result<json::VaultKeyFile, Error> {
+	pub fn into_vault_file(self, iterations: NonZeroU32, password: &Password) -> Result<json::VaultKeyFile, Error> {
 		let meta_plain = json::VaultKeyMeta {
 			address: self.address.into(),
 			name: Some(self.name),
@@ -150,7 +178,7 @@ impl SafeAccount {
 	}

 	/// Change account's password.
-	pub fn change_password(&self, old_password: &Password, new_password: &Password, iterations: u32) -> Result<Self, Error> {
+	pub fn change_password(&self, old_password: &Password, new_password: &Password, iterations: NonZeroU32) -> Result<Self, Error> {
 		let secret = self.crypto.secret(old_password)?;
 		let result = SafeAccount {
 			id: self.id.clone(),
@@ -173,14 +201,19 @@ impl SafeAccount {
 #[cfg(test)]
 mod tests {
 	use ethkey::{Generator, Random, verify_public, Message};
-	use super::SafeAccount;
+	use super::{SafeAccount, NonZeroU32};
+
+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(10240).expect("10240 > 0; qed");
+	}
+

 	#[test]
 	fn sign_and_verify_public() {
 		let keypair = Random.generate().unwrap();
 		let password = "hello world".into();
 		let message = Message::default();
-		let account = SafeAccount::create(&keypair, [0u8; 16], &password, 10240, "Test".to_owned(), "{}".to_owned());
+		let account = SafeAccount::create(&keypair, [0u8; 16], &password, *ITERATIONS, "Test".to_owned(), "{}".to_owned());
 		let signature = account.unwrap().sign(&password, &message).unwrap();
 		assert!(verify_public(keypair.public(), &signature, &message).unwrap());
 	}
@@ -190,10 +223,9 @@ mod tests {
 		let keypair = Random.generate().unwrap();
 		let first_password = "hello world".into();
 		let sec_password = "this is sparta".into();
-		let i = 10240;
 		let message = Message::default();
-		let account = SafeAccount::create(&keypair, [0u8; 16], &first_password, i, "Test".to_owned(), "{}".to_owned()).unwrap();
-		let new_account = account.change_password(&first_password, &sec_password, i).unwrap();
+		let account = SafeAccount::create(&keypair, [0u8; 16], &first_password, *ITERATIONS, "Test".to_owned(), "{}".to_owned()).unwrap();
+		let new_account = account.change_password(&first_password, &sec_password, *ITERATIONS).unwrap();
 		assert!(account.sign(&first_password, &message).is_ok());
 		assert!(account.sign(&sec_password, &message).is_err());
 		assert!(new_account.sign(&first_password, &message).is_err());
--- a/accounts/ethstore/src/account/version.rs
+++ b/accounts/ethstore/src/account/version.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use json;

--- a/accounts/ethstore/src/accounts_dir/disk.rs
+++ b/accounts/ethstore/src/accounts_dir/disk.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{fs, io};
 use std::io::Write;
@@ -23,6 +23,7 @@ use {json, SafeAccount, Error};
 use json::Uuid;
 use super::{KeyDirectory, VaultKeyDirectory, VaultKeyDirectoryProvider, VaultKey};
 use super::vault::{VAULT_FILE_NAME, VaultDiskDirectory};
+use ethkey::Password;

 const IGNORED_FILES: &'static [&'static str] = &[
 	"thumbs.db",
@@ -106,6 +107,7 @@ pub type RootDiskDirectory = DiskDirectory<DiskKeyFileManager>;
 pub trait KeyFileManager: Send + Sync {
 	/// Read `SafeAccount` from given key file stream
 	fn read<T>(&self, filename: Option<String>, reader: T) -> Result<SafeAccount, Error> where T: io::Read;
+
 	/// Write `SafeAccount` to given key file stream
 	fn write<T>(&self, account: SafeAccount, writer: &mut T) -> Result<(), Error> where T: io::Write;
 }
@@ -117,7 +119,10 @@ pub struct DiskDirectory<T> where T: KeyFileManager {
 }

 /// Keys file manager for root keys directory
-pub struct DiskKeyFileManager;
+#[derive(Default)]
+pub struct DiskKeyFileManager {
+	password: Option<Password>,
+}

 impl RootDiskDirectory {
 	pub fn create<P>(path: P) -> Result<Self, Error> where P: AsRef<Path> {
@@ -125,8 +130,13 @@ impl RootDiskDirectory {
 		Ok(Self::at(path))
 	}

+	/// allows to read keyfiles with given password (needed for keyfiles w/o address)
+	pub fn with_password(&self, password: Option<Password>) -> Self {
+		DiskDirectory::new(&self.path, DiskKeyFileManager { password })
+	}
+
 	pub fn at<P>(path: P) -> Self where P: AsRef<Path> {
-		DiskDirectory::new(path, DiskKeyFileManager)
+		DiskDirectory::new(path, DiskKeyFileManager::default())
 	}
 }

@@ -319,7 +329,7 @@ impl<T> VaultKeyDirectoryProvider for DiskDirectory<T> where T: KeyFileManager {
 impl KeyFileManager for DiskKeyFileManager {
 	fn read<T>(&self, filename: Option<String>, reader: T) -> Result<SafeAccount, Error> where T: io::Read {
 		let key_file = json::KeyFile::load(reader).map_err(|e| Error::Custom(format!("{:?}", e)))?;
-		Ok(SafeAccount::from_file(key_file, filename))
+		SafeAccount::from_file(key_file, filename, &self.password)
 	}

 	fn write<T>(&self, mut account: SafeAccount, writer: &mut T) -> Result<(), Error> where T: io::Write {
@@ -346,11 +356,16 @@ mod test {
 	extern crate tempdir;

 	use std::{env, fs};
+	use std::num::NonZeroU32;
 	use super::{KeyDirectory, RootDiskDirectory, VaultKey};
 	use account::SafeAccount;
 	use ethkey::{Random, Generator};
 	use self::tempdir::TempDir;

+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(1024).expect("1024 > 0; qed");
+	}
+
 	#[test]
 	fn should_create_new_account() {
 		// given
@@ -361,7 +376,7 @@ mod test {
 		let directory = RootDiskDirectory::create(dir.clone()).unwrap();

 		// when
-		let account = SafeAccount::create(&keypair, [0u8; 16], &password, 1024, "Test".to_owned(), "{}".to_owned());
+		let account = SafeAccount::create(&keypair, [0u8; 16], &password, *ITERATIONS, "Test".to_owned(), "{}".to_owned());
 		let res = directory.insert(account.unwrap());

 		// then
@@ -382,7 +397,7 @@ mod test {
 		let directory = RootDiskDirectory::create(dir.clone()).unwrap();

 		// when
-		let account = SafeAccount::create(&keypair, [0u8; 16], &password, 1024, "Test".to_owned(), "{}".to_owned()).unwrap();
+		let account = SafeAccount::create(&keypair, [0u8; 16], &password, *ITERATIONS, "Test".to_owned(), "{}".to_owned()).unwrap();
 		let filename = "test".to_string();
 		let dedup = true;

@@ -418,7 +433,7 @@ mod test {

 		// and when
 		let before_root_items_count = fs::read_dir(&dir).unwrap().count();
-		let vault = directory.as_vault_provider().unwrap().create(vault_name, VaultKey::new(&password, 1024));
+		let vault = directory.as_vault_provider().unwrap().create(vault_name, VaultKey::new(&password, *ITERATIONS));

 		// then
 		assert!(vault.is_ok());
@@ -426,7 +441,7 @@ mod test {
 		assert!(after_root_items_count > before_root_items_count);

 		// and when
-		let vault = directory.as_vault_provider().unwrap().open(vault_name, VaultKey::new(&password, 1024));
+		let vault = directory.as_vault_provider().unwrap().open(vault_name, VaultKey::new(&password, *ITERATIONS));

 		// then
 		assert!(vault.is_ok());
@@ -443,8 +458,9 @@ mod test {
 		let temp_path = TempDir::new("").unwrap();
 		let directory = RootDiskDirectory::create(&temp_path).unwrap();
 		let vault_provider = directory.as_vault_provider().unwrap();
-		vault_provider.create("vault1", VaultKey::new(&"password1".into(), 1)).unwrap();
-		vault_provider.create("vault2", VaultKey::new(&"password2".into(), 1)).unwrap();
+		let iter = NonZeroU32::new(1).expect("1 > 0; qed");
+		vault_provider.create("vault1", VaultKey::new(&"password1".into(), iter)).unwrap();
+		vault_provider.create("vault2", VaultKey::new(&"password2".into(), iter)).unwrap();

 		// then
 		let vaults = vault_provider.list_vaults().unwrap();
@@ -466,7 +482,7 @@ mod test {

 		let keypair = Random.generate().unwrap();
 		let password = "test pass".into();
-		let account = SafeAccount::create(&keypair, [0u8; 16], &password, 1024, "Test".to_owned(), "{}".to_owned());
+		let account = SafeAccount::create(&keypair, [0u8; 16], &password, *ITERATIONS, "Test".to_owned(), "{}".to_owned());
 		directory.insert(account.unwrap()).expect("Account should be inserted ok");

 		let new_hash = directory.files_hash().expect("New files hash should be calculated ok");
--- a/accounts/ethstore/src/accounts_dir/memory.rs
+++ b/accounts/ethstore/src/accounts_dir/memory.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::collections::HashMap;
 use parking_lot::RwLock;
--- a/accounts/ethstore/src/accounts_dir/mod.rs
+++ b/accounts/ethstore/src/accounts_dir/mod.rs
@@ -1,22 +1,23 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Accounts Directory

 use ethkey::Password;
+use std::num::NonZeroU32;
 use std::path::{PathBuf};
 use {SafeAccount, Error};

@@ -41,7 +42,7 @@ pub struct VaultKey {
 	/// Vault password
 	pub password: Password,
 	/// Number of iterations to produce a derived key from password
-	pub iterations: u32,
+	pub iterations: NonZeroU32,
 }

 /// Keys directory
@@ -96,7 +97,7 @@ pub use self::vault::VaultDiskDirectory;

 impl VaultKey {
 	/// Create new vault key
-	pub fn new(password: &Password, iterations: u32) -> Self {
+	pub fn new(password: &Password, iterations: NonZeroU32) -> Self {
 		VaultKey {
 			password: password.clone(),
 			iterations: iterations,
--- a/accounts/ethstore/src/accounts_dir/vault.rs
+++ b/accounts/ethstore/src/accounts_dir/vault.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{fs, io};
 use std::path::{PathBuf, Path};
@@ -282,11 +282,17 @@ mod test {

 	use std::fs;
 	use std::io::Write;
+	use std::num::NonZeroU32;
 	use std::path::PathBuf;
 	use super::VaultKey;
 	use super::{VAULT_FILE_NAME, check_vault_name, make_vault_dir_path, create_vault_file, read_vault_file, VaultDiskDirectory};
 	use self::tempdir::TempDir;

+	
+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(1024).expect("1024 > 0; qed");
+	}
+
 	#[test]
 	fn check_vault_name_succeeds() {
 		assert!(check_vault_name("vault"));
@@ -310,8 +316,10 @@ mod test {

 	#[test]
 	fn make_vault_dir_path_succeeds() {
-		assert_eq!(make_vault_dir_path("/home/user/parity", "vault", true).unwrap().to_str().unwrap(), "/home/user/parity/vault");
-		assert_eq!(make_vault_dir_path("/home/user/parity", "*bad-name*", false).unwrap().to_str().unwrap(), "/home/user/parity/*bad-name*");
+		use std::path::Path;
+
+		assert_eq!(&make_vault_dir_path("/home/user/parity", "vault", true).unwrap(), &Path::new("/home/user/parity/vault"));
+		assert_eq!(&make_vault_dir_path("/home/user/parity", "*bad-name*", false).unwrap(), &Path::new("/home/user/parity/*bad-name*"));
 	}

 	#[test]
@@ -323,7 +331,7 @@ mod test {
 	fn create_vault_file_succeeds() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password".into(), 1024);
+		let key = VaultKey::new(&"password".into(), *ITERATIONS);
 		let mut vault_dir: PathBuf = temp_path.path().into();
 		vault_dir.push("vault");
 		fs::create_dir_all(&vault_dir).unwrap();
@@ -342,7 +350,7 @@ mod test {
 	fn read_vault_file_succeeds() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password".into(), 1024);
+		let key = VaultKey::new(&"password".into(), *ITERATIONS);
 		let vault_file_contents = r#"{"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"758696c8dc6378ab9b25bb42790da2f5"},"ciphertext":"54eb50683717d41caaeb12ea969f2c159daada5907383f26f327606a37dc7168","kdf":"pbkdf2","kdfparams":{"c":1024,"dklen":32,"prf":"hmac-sha256","salt":"3c320fa566a1a7963ac8df68a19548d27c8f40bf92ef87c84594dcd5bbc402b6"},"mac":"9e5c2314c2a0781962db85611417c614bd6756666b6b1e93840f5b6ed895f003"}}"#;
 		let dir: PathBuf = temp_path.path().into();
 		let mut vault_file_path: PathBuf = dir.clone();
@@ -363,7 +371,7 @@ mod test {
 	fn read_vault_file_fails() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password1".into(), 1024);
+		let key = VaultKey::new(&"password1".into(), *ITERATIONS);
 		let dir: PathBuf = temp_path.path().into();
 		let mut vault_file_path: PathBuf = dir.clone();
 		vault_file_path.push(VAULT_FILE_NAME);
@@ -392,7 +400,7 @@ mod test {
 	fn vault_directory_can_be_created() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password".into(), 1024);
+		let key = VaultKey::new(&"password".into(), *ITERATIONS);
 		let dir: PathBuf = temp_path.path().into();

 		// when
@@ -412,7 +420,7 @@ mod test {
 	fn vault_directory_cannot_be_created_if_already_exists() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password".into(), 1024);
+		let key = VaultKey::new(&"password".into(), *ITERATIONS);
 		let dir: PathBuf = temp_path.path().into();
 		let mut vault_dir = dir.clone();
 		vault_dir.push("vault");
@@ -429,7 +437,7 @@ mod test {
 	fn vault_directory_cannot_be_opened_if_not_exists() {
 		// given
 		let temp_path = TempDir::new("").unwrap();
-		let key = VaultKey::new(&"password".into(), 1024);
+		let key = VaultKey::new(&"password".into(), *ITERATIONS);
 		let dir: PathBuf = temp_path.path().into();

 		// when
--- a/accounts/ethstore/src/error.rs
+++ b/accounts/ethstore/src/error.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use std::io::Error as IoError;
--- a/accounts/ethstore/src/ethkey.rs
+++ b/accounts/ethstore/src/ethkey.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! ethkey reexport to make documentation look pretty.
 pub use _ethkey::*;
--- a/accounts/ethstore/src/ethstore.rs
+++ b/accounts/ethstore/src/ethstore.rs
@@ -1,26 +1,26 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::collections::{BTreeMap, HashMap};
+use std::num::NonZeroU32;
 use std::mem;
 use std::path::PathBuf;
 use parking_lot::{Mutex, RwLock};
 use std::time::{Instant, Duration};

-use crypto::KEY_ITERATIONS;
 use random::Random;
 use ethkey::{self, Signature, Password, Address, Message, Secret, Public, KeyPair, ExtendedKeyPair};
 use accounts_dir::{KeyDirectory, VaultKeyDirectory, VaultKey, SetKeyError};
@@ -29,6 +29,12 @@ use presale::PresaleWallet;
 use json::{self, Uuid, OpaqueKeyFile};
 use {import, Error, SimpleSecretStore, SecretStore, SecretVaultRef, StoreAccountRef, Derivation, OpaqueSecret};

+
+lazy_static! {
+	static ref KEY_ITERATIONS: NonZeroU32 =
+		NonZeroU32::new(crypto::KEY_ITERATIONS as u32).expect("KEY_ITERATIONS > 0; qed");
+}
+
 /// Accounts store.
 pub struct EthStore {
 	store: EthMultiStore,
@@ -37,11 +43,11 @@ pub struct EthStore {
 impl EthStore {
 	/// Open a new accounts store with given key directory backend.
 	pub fn open(directory: Box<KeyDirectory>) -> Result<Self, Error> {
-		Self::open_with_iterations(directory, KEY_ITERATIONS as u32)
+		Self::open_with_iterations(directory, *KEY_ITERATIONS)
 	}

 	/// Open a new account store with given key directory backend and custom number of iterations.
-	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: u32) -> Result<Self, Error> {
+	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: NonZeroU32) -> Result<Self, Error> {
 		Ok(EthStore {
 			store: EthMultiStore::open_with_iterations(directory, iterations)?,
 		})
@@ -168,7 +174,7 @@ impl SecretStore for EthStore {

 	fn import_wallet(&self, vault: SecretVaultRef, json: &[u8], password: &Password, gen_id: bool) -> Result<StoreAccountRef, Error> {
 		let json_keyfile = json::KeyFile::load(json).map_err(|_| Error::InvalidKeyFile("Invalid JSON format".to_owned()))?;
-		let mut safe_account = SafeAccount::from_file(json_keyfile, None);
+		let mut safe_account = SafeAccount::from_file(json_keyfile, None, &None)?;

 		if gen_id {
 			safe_account.id = Random::random();
@@ -257,7 +263,7 @@ impl SecretStore for EthStore {
 /// Similar to `EthStore` but may store many accounts (with different passwords) for the same `Address`
 pub struct EthMultiStore {
 	dir: Box<KeyDirectory>,
-	iterations: u32,
+	iterations: NonZeroU32,
 	// order lock: cache, then vaults
 	cache: RwLock<BTreeMap<StoreAccountRef, Vec<SafeAccount>>>,
 	vaults: Mutex<HashMap<String, Box<VaultKeyDirectory>>>,
@@ -273,11 +279,11 @@ struct Timestamp {
 impl EthMultiStore {
 	/// Open new multi-accounts store with given key directory backend.
 	pub fn open(directory: Box<KeyDirectory>) -> Result<Self, Error> {
-		Self::open_with_iterations(directory, KEY_ITERATIONS as u32)
+		Self::open_with_iterations(directory, *KEY_ITERATIONS)
 	}

 	/// Open new multi-accounts store with given key directory backend and custom number of iterations for new keys.
-	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: u32) -> Result<Self, Error> {
+	pub fn open_with_iterations(directory: Box<KeyDirectory>, iterations: NonZeroU32) -> Result<Self, Error> {
 		let store = EthMultiStore {
 			dir: directory,
 			vaults: Mutex::new(HashMap::new()),
--- a/accounts/ethstore/src/import.rs
+++ b/accounts/ethstore/src/import.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::collections::HashSet;
 use std::path::Path;
@@ -25,7 +25,7 @@ use Error;

 /// Import an account from a file.
 pub fn import_account(path: &Path, dst: &KeyDirectory) -> Result<Address, Error> {
-	let key_manager = DiskKeyFileManager;
+	let key_manager = DiskKeyFileManager::default();
 	let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
 	let filename = path.file_name().and_then(|n| n.to_str()).map(|f| f.to_owned());
 	let account = fs::File::open(&path)
@@ -42,7 +42,9 @@ pub fn import_account(path: &Path, dst: &KeyDirectory) -> Result<Address, Error>
 /// Import all accounts from one directory to the other.
 pub fn import_accounts(src: &KeyDirectory, dst: &KeyDirectory) -> Result<Vec<Address>, Error> {
 	let accounts = src.load()?;
-	let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();
+	let existing_accounts = dst.load()?.into_iter()
+		.map(|a| a.address)
+		.collect::<HashSet<_>>();

 	accounts.into_iter()
 		.filter(|a| !existing_accounts.contains(&a.address))
--- a/accounts/ethstore/src/json/bytes.rs
+++ b/accounts/ethstore/src/json/bytes.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{ops, str};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
--- a/accounts/ethstore/src/json/cipher.rs
+++ b/accounts/ethstore/src/json/cipher.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use serde::{Serialize, Serializer, Deserialize, Deserializer};
--- a/accounts/ethstore/src/json/crypto.rs
+++ b/accounts/ethstore/src/json/crypto.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{fmt, str};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
@@ -52,6 +52,7 @@ enum CryptoField {
 	Kdf,
 	KdfParams,
 	Mac,
+	Version,
 }

 impl<'a> Deserialize<'a> for CryptoField {
@@ -81,6 +82,7 @@ impl<'a> Visitor<'a> for CryptoFieldVisitor {
 			"kdf" => Ok(CryptoField::Kdf),
 			"kdfparams" => Ok(CryptoField::KdfParams),
 			"mac" => Ok(CryptoField::Mac),
+			"version" => Ok(CryptoField::Version),
 			_ => Err(Error::custom(format!("Unknown field: '{}'", value))),
 		}
 	}
@@ -122,6 +124,8 @@ impl<'a> Visitor<'a> for CryptoVisitor {
 				Some(CryptoField::Kdf) => { kdf = Some(visitor.next_value()?); }
 				Some(CryptoField::KdfParams) => { kdfparams = Some(visitor.next_value()?); }
 				Some(CryptoField::Mac) => { mac = Some(visitor.next_value()?); }
+				// skip not required version field (it appears in pyethereum generated keystores)
+				Some(CryptoField::Version) => { visitor.next_value().unwrap_or(()) }
 				None => { break; }
 			}
 		}
--- a/accounts/ethstore/src/json/error.rs
+++ b/accounts/ethstore/src/json/error.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;

--- a/accounts/ethstore/src/json/hash.rs
+++ b/accounts/ethstore/src/json/hash.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::{ops, fmt, str};
 use rustc_hex::{FromHex, ToHex};
--- a/accounts/ethstore/src/json/id.rs
+++ b/accounts/ethstore/src/json/id.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Universaly unique identifier.
 use std::{fmt, str};
--- a/accounts/ethstore/src/json/kdf.rs
+++ b/accounts/ethstore/src/json/kdf.rs
@@ -1,23 +1,24 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
+use std::num::NonZeroU32;
 use serde::{Serialize, Serializer, Deserialize, Deserializer};
 use serde::de::{Visitor, Error as SerdeError};
-use super::{Error, H256};
+use super::{Error, Bytes};

 #[derive(Debug, PartialEq)]
 pub enum KdfSer {
@@ -108,10 +109,10 @@ impl<'a> Visitor<'a> for PrfVisitor {

 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub struct Pbkdf2 {
-	pub c: u32,
+	pub c: NonZeroU32,
 	pub dklen: u32,
 	pub prf: Prf,
-	pub salt: H256,
+	pub salt: Bytes,
 }

 #[derive(Debug, PartialEq, Serialize, Deserialize)]
@@ -120,7 +121,7 @@ pub struct Scrypt {
 	pub p: u32,
 	pub n: u32,
 	pub r: u32,
-	pub salt: H256,
+	pub salt: Bytes,
 }

 #[derive(Debug, PartialEq)]
--- a/accounts/ethstore/src/json/key_file.rs
+++ b/accounts/ethstore/src/json/key_file.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use std::io::{Read, Write};
@@ -46,7 +46,7 @@ pub struct KeyFile {
 	pub id: Uuid,
 	pub version: Version,
 	pub crypto: Crypto,
-	pub address: H160,
+	pub address: Option<H160>,
 	pub name: Option<String>,
 	pub meta: Option<String>,
 }
@@ -158,11 +158,6 @@ impl<'a> Visitor<'a> for KeyFileVisitor {
 			None => return Err(V::Error::missing_field("crypto")),
 		};

-		let address = match address {
-			Some(address) => address,
-			None => return Err(V::Error::missing_field("address")),
-		};
-
 		let result = KeyFile {
 			id: id,
 			version: version,
@@ -222,7 +217,7 @@ mod tests {
 		let expected = KeyFile {
 			id: Uuid::from_str("8777d9f6-7860-4b9b-88b7-0b57ee6b3a73").unwrap(),
 			version: Version::V3,
-			address: "6edddfc6349aff20bc6467ccf276c5b52487f7a8".into(),
+			address: Some("6edddfc6349aff20bc6467ccf276c5b52487f7a8".into()),
 			crypto: Crypto {
 				cipher: Cipher::Aes128Ctr(Aes128Ctr {
 					iv: "b5a7ec855ec9e2c405371356855fec83".into(),
@@ -273,7 +268,7 @@ mod tests {
 		let expected = KeyFile {
 			id: "8777d9f6-7860-4b9b-88b7-0b57ee6b3a73".into(),
 			version: Version::V3,
-			address: "6edddfc6349aff20bc6467ccf276c5b52487f7a8".into(),
+			address: Some("6edddfc6349aff20bc6467ccf276c5b52487f7a8".into()),
 			crypto: Crypto {
 				cipher: Cipher::Aes128Ctr(Aes128Ctr {
 					iv: "b5a7ec855ec9e2c405371356855fec83".into(),
@@ -301,7 +296,7 @@ mod tests {
 		let file = KeyFile {
 			id: "8777d9f6-7860-4b9b-88b7-0b57ee6b3a73".into(),
 			version: Version::V3,
-			address: "6edddfc6349aff20bc6467ccf276c5b52487f7a8".into(),
+			address: Some("6edddfc6349aff20bc6467ccf276c5b52487f7a8".into()),
 			crypto: Crypto {
 				cipher: Cipher::Aes128Ctr(Aes128Ctr {
 					iv: "b5a7ec855ec9e2c405371356855fec83".into(),
--- a/accounts/ethstore/src/json/mod.rs
+++ b/accounts/ethstore/src/json/mod.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Contract interface specification.

--- a/accounts/ethstore/src/json/presale.rs
+++ b/accounts/ethstore/src/json/presale.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::io::Read;
 use serde_json;
--- a/accounts/ethstore/src/json/vault_file.rs
+++ b/accounts/ethstore/src/json/vault_file.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::io::{Read, Write};
 use serde_json;
@@ -41,6 +41,11 @@ impl VaultFile {
 mod test {
 	use serde_json;
 	use json::{VaultFile, Crypto, Cipher, Aes128Ctr, Kdf, Pbkdf2, Prf};
+	use std::num::NonZeroU32;
+
+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(1024).expect("1024 > 0; qed");
+	}

 	#[test]
 	fn to_and_from_json() {
@@ -51,7 +56,7 @@ mod test {
 				}),
 				ciphertext: "4d6938a1f49b7782".into(),
 				kdf: Kdf::Pbkdf2(Pbkdf2 {
-					c: 1024,
+					c: *ITERATIONS,
 					dklen: 32,
 					prf: Prf::HmacSha256,
 					salt: "b6a9338a7ccd39288a86dba73bfecd9101b4f3db9c9830e7c76afdbd4f6872e5".into(),
@@ -76,7 +81,7 @@ mod test {
 				}),
 				ciphertext: "4d6938a1f49b7782".into(),
 				kdf: Kdf::Pbkdf2(Pbkdf2 {
-					c: 1024,
+					c: *ITERATIONS,
 					dklen: 32,
 					prf: Prf::HmacSha256,
 					salt: "b6a9338a7ccd39288a86dba73bfecd9101b4f3db9c9830e7c76afdbd4f6872e5".into(),
--- a/accounts/ethstore/src/json/vault_key_file.rs
+++ b/accounts/ethstore/src/json/vault_key_file.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::io::{Read, Write};
 use serde::de::Error;
@@ -106,6 +106,11 @@ mod test {
 	use serde_json;
 	use json::{VaultKeyFile, Version, Crypto, Cipher, Aes128Ctr, Kdf, Pbkdf2, Prf,
 		insert_vault_name_to_json_meta, remove_vault_name_from_json_meta};
+	use std::num::NonZeroU32;
+
+	lazy_static! {
+		static ref ITERATIONS: NonZeroU32 = NonZeroU32::new(10240).expect("10240 > 0; qed");
+	}

 	#[test]
 	fn to_and_from_json() {
@@ -118,7 +123,7 @@ mod test {
 				}),
 				ciphertext: "4befe0a66d9a4b6fec8e39eb5c90ac5dafdeaab005fff1af665fd1f9af925c91".into(),
 				kdf: Kdf::Pbkdf2(Pbkdf2 {
-					c: 10240,
+					c: *ITERATIONS,
 					dklen: 32,
 					prf: Prf::HmacSha256,
 					salt: "f17731e84ecac390546692dbd4ccf6a3a2720dc9652984978381e61c28a471b2".into(),
@@ -131,7 +136,7 @@ mod test {
 				}),
 				ciphertext: "fef0d113d7576c1702daf380ad6f4c5408389e57991cae2a174facd74bd549338e1014850bddbab7eb486ff5f5c9c5532800c6a6d4db2be2212cd5cd3769244ab230e1f369e8382a9e6d7c0a".into(),
 				kdf: Kdf::Pbkdf2(Pbkdf2 {
-					c: 10240,
+					c: *ITERATIONS,
 					dklen: 32,
 					prf: Prf::HmacSha256,
 					salt: "aca82865174a82249a198814b263f43a631f272cbf7ed329d0f0839d259c652a".into(),
--- a/accounts/ethstore/src/json/version.rs
+++ b/accounts/ethstore/src/json/version.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt;
 use serde::{Serialize, Serializer, Deserialize, Deserializer};
--- a/accounts/ethstore/src/lib.rs
+++ b/accounts/ethstore/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Ethereum key-management.

@@ -36,6 +36,8 @@ extern crate ethereum_types;
 extern crate ethkey as _ethkey;
 extern crate parity_wordlist;

+#[macro_use]
+extern crate lazy_static;
 #[macro_use]
 extern crate log;
 #[macro_use]
--- a/accounts/ethstore/src/presale.rs
+++ b/accounts/ethstore/src/presale.rs
@@ -1,20 +1,21 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fs;
+use std::num::NonZeroU32;
 use std::path::Path;
 use json;
 use ethkey::{Address, Secret, KeyPair, Password};
@@ -58,7 +59,8 @@ impl PresaleWallet {
 		let mut derived_key = [0u8; 32];
 		let salt = pbkdf2::Salt(password.as_bytes());
 		let sec = pbkdf2::Secret(password.as_bytes());
-		pbkdf2::sha256(2000, salt, sec, &mut derived_key);
+		let iter = NonZeroU32::new(2000).expect("2000 > 0; qed");
+		pbkdf2::sha256(iter, salt, sec, &mut derived_key);

 		let mut key = vec![0; self.ciphertext.len()];
 		let len = crypto::aes::decrypt_128_cbc(&derived_key[0..16], &self.iv, &self.ciphertext, &mut key)
--- a/accounts/ethstore/src/random.rs
+++ b/accounts/ethstore/src/random.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use rand::{Rng, OsRng};

--- a/accounts/ethstore/src/secret_store.rs
+++ b/accounts/ethstore/src/secret_store.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::hash::{Hash, Hasher};
 use std::path::PathBuf;
--- a/accounts/ethstore/tests/api.rs
+++ b/accounts/ethstore/tests/api.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate rand;
 extern crate ethstore;
--- a/accounts/ethstore/tests/res/ciphertext/30.json
+++ b/accounts/ethstore/tests/res/ciphertext/30.json
--- a/accounts/ethstore/tests/res/ciphertext/31.json
+++ b/accounts/ethstore/tests/res/ciphertext/31.json
--- a/accounts/ethstore/tests/res/geth_keystore/UTC--2016-02-17T09-20-45.721400158Z--3f49624084b67849c7b4e805c5988c21a430f9d9
+++ b/accounts/ethstore/tests/res/geth_keystore/UTC--2016-02-17T09-20-45.721400158Z--3f49624084b67849c7b4e805c5988c21a430f9d9
--- a/accounts/ethstore/tests/res/geth_keystore/UTC--2016-02-20T09-33-03.984382741Z--5ba4dcf897e97c2bdf8315b9ef26c13c085988cf
+++ b/accounts/ethstore/tests/res/geth_keystore/UTC--2016-02-20T09-33-03.984382741Z--5ba4dcf897e97c2bdf8315b9ef26c13c085988cf
--- a/accounts/ethstore/tests/res/geth_keystore/UTC--2016-04-03T08-58-49.834202900Z--63121b431a52f8043c16fcf0d1df9cb7b5f66649
+++ b/accounts/ethstore/tests/res/geth_keystore/UTC--2016-04-03T08-58-49.834202900Z--63121b431a52f8043c16fcf0d1df9cb7b5f66649
--- a/accounts/ethstore/tests/res/pat/p1.json
+++ b/accounts/ethstore/tests/res/pat/p1.json
--- a/accounts/ethstore/tests/res/pat/p2.json
+++ b/accounts/ethstore/tests/res/pat/p2.json
--- a/accounts/ethstore/tests/util/mod.rs
+++ b/accounts/ethstore/tests/util/mod.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 mod transient_dir;

--- a/accounts/ethstore/tests/util/transient_dir.rs
+++ b/accounts/ethstore/tests/util/transient_dir.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::path::PathBuf;
 use std::{env, fs};
--- a/accounts/fake-hardware-wallet/Cargo.toml
+++ b/accounts/fake-hardware-wallet/Cargo.toml
@@ -7,4 +7,4 @@ authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
 ethereum-types = "0.4"
-ethkey = { path = "../../ethkey" }
+ethkey = { path = "../../accounts/ethkey" }
--- a/accounts/fake-hardware-wallet/src/lib.rs
+++ b/accounts/fake-hardware-wallet/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Dummy module for platforms that does not provide support for hardware wallets (libusb)

--- a/accounts/hw/Cargo.toml
+++ b/accounts/hw/Cargo.toml
@@ -8,7 +8,7 @@ authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
 log = "0.4"
-parking_lot = "0.6"
+parking_lot = "0.7"
 protobuf = "1.4"
 hidapi = { git = "https://github.com/paritytech/hidapi-rs" }
 libusb = { git = "https://github.com/paritytech/libusb-rs" }
--- a/accounts/hw/src/ledger.rs
+++ b/accounts/hw/src/ledger.rs
--- a/accounts/hw/src/lib.rs
+++ b/accounts/hw/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Hardware wallet management.

@@ -34,15 +34,18 @@ extern crate trezor_sys;
 mod ledger;
 mod trezor;

-use std::sync::{Arc, atomic, atomic::AtomicBool};
+use std::sync::{Arc, atomic, atomic::AtomicBool, Weak};
 use std::{fmt, time::Duration};
+use std::thread;

 use ethereum_types::U256;
 use ethkey::{Address, Signature};
 use parking_lot::Mutex;

-const USB_DEVICE_CLASS_DEVICE: u8 = 0;
-const POLLING_DURATION: Duration = Duration::from_millis(500);
+const HID_GLOBAL_USAGE_PAGE: u16 = 0xFF00;
+const HID_USB_DEVICE_CLASS: u8 = 0;
+const MAX_POLLING_DURATION: Duration = Duration::from_millis(500);
+const USB_EVENT_POLLING_INTERVAL: Duration = Duration::from_millis(500);

 /// `HardwareWallet` device
 #[derive(Debug)]
@@ -60,7 +63,7 @@ pub trait Wallet<'a> {

 	/// Sign transaction data with wallet managing `address`.
 	fn sign_transaction(&self, address: &Address, transaction: Self::Transaction) -> Result<Signature, Self::Error>;
-	
+
 	/// Set key derivation path for a chain.
 	fn set_key_path(&self, key_path: KeyPath);

@@ -189,7 +192,7 @@ impl From<libusb::Error> for Error {
 }

 /// Specifies the direction of the `HardwareWallet` i.e, whether it arrived or left
-#[derive(Debug, Copy, Clone)]
+#[derive(Debug, Copy, Clone, PartialEq)]
 pub enum DeviceDirection {
 	/// Device arrived
 	Arrived,
@@ -218,13 +221,47 @@ impl HardwareWalletManager {
 	pub fn new() -> Result<Self, Error> {
 		let exiting = Arc::new(AtomicBool::new(false));
 		let hidapi = Arc::new(Mutex::new(hidapi::HidApi::new().map_err(|e| Error::Hid(e.to_string().clone()))?));
-		let ledger = ledger::Manager::new(hidapi.clone(), exiting.clone())?;
-		let trezor = trezor::Manager::new(hidapi.clone(), exiting.clone())?;
+		let ledger = ledger::Manager::new(hidapi.clone());
+		let trezor = trezor::Manager::new(hidapi.clone());
+		let usb_context = Arc::new(libusb::Context::new()?);
+
+		let l = ledger.clone();
+		let t = trezor.clone();
+		let exit = exiting.clone();
+
+		// Subscribe to all vendor IDs (VIDs) and product IDs (PIDs)
+		// This means that the `HardwareWalletManager` is responsible to validate the detected device
+		usb_context.register_callback(
+			None, None, Some(HID_USB_DEVICE_CLASS),
+			Box::new(EventHandler::new(
+				Arc::downgrade(&ledger),
+				Arc::downgrade(&trezor)
+			))
+		)?;
+
+		// Hardware event subscriber thread
+		thread::Builder::new()
+			.name("hw_wallet_manager".to_string())
+			.spawn(move || {
+				if let Err(e) = l.update_devices(DeviceDirection::Arrived) {
+					debug!(target: "hw", "Ledger couldn't connect at startup, error: {}", e);
+				}
+				if let Err(e) = t.update_devices(DeviceDirection::Arrived) {
+					debug!(target: "hw", "Trezor couldn't connect at startup, error: {}", e);
+				}
+
+				while !exit.load(atomic::Ordering::Acquire) {
+					if let Err(e) = usb_context.handle_events(Some(USB_EVENT_POLLING_INTERVAL)) {
+						debug!(target: "hw", "HardwareWalletManager event handler error: {}", e);
+					}
+				}
+			})
+			.ok();

 		Ok(Self {
 			exiting,
-			ledger,
 			trezor,
+			ledger,
 		})
 	}

@@ -292,10 +329,74 @@ impl HardwareWalletManager {

 impl Drop for HardwareWalletManager {
 	fn drop(&mut self) {
-		// Indicate to the USB Hotplug handlers that they
-		// shall terminate but don't wait for them to terminate.
-		// If they don't terminate for some reason USB Hotplug events will be handled
+		// Indicate to the USB Hotplug handler that it
+		// shall terminate but don't wait for it to terminate.
+		// If it doesn't terminate for some reason USB Hotplug events will be handled
 		// even if the HardwareWalletManger has been dropped
 		self.exiting.store(true, atomic::Ordering::Release);
 	}
 }
+
+/// Hardware wallet event handler
+///
+/// Note, that this runs to completion and race-conditions can't occur but it can
+/// stop other events for being processed with an infinite loop or similar
+struct EventHandler {
+	ledger: Weak<ledger::Manager>,
+	trezor: Weak<trezor::Manager>,
+}
+
+impl EventHandler {
+	/// Trezor event handler constructor
+	pub fn new(ledger: Weak<ledger::Manager>, trezor: Weak<trezor::Manager>) -> Self {
+		Self { ledger, trezor }
+	}
+
+	fn extract_device_info(device: &libusb::Device) -> Result<(u16, u16), Error> {
+		let desc = device.device_descriptor()?;
+		Ok((desc.vendor_id(), desc.product_id()))
+	}
+}
+
+impl libusb::Hotplug for EventHandler {
+	fn device_arrived(&mut self, device: libusb::Device) {
+		// Upgrade reference to an Arc
+		if let (Some(ledger), Some(trezor)) = (self.ledger.upgrade(), self.trezor.upgrade()) {
+			// Version ID and Product ID are available
+			if let Ok((vid, pid)) = Self::extract_device_info(&device) {
+				if trezor::is_valid_trezor(vid, pid) {
+					if !trezor::try_connect_polling(&trezor, &MAX_POLLING_DURATION, DeviceDirection::Arrived) {
+						trace!(target: "hw", "Trezor device was detected but connection failed");
+					}
+				} else if ledger::is_valid_ledger(vid, pid) {
+					if !ledger::try_connect_polling(&ledger, &MAX_POLLING_DURATION, DeviceDirection::Arrived) {
+						trace!(target: "hw", "Ledger device was detected but connection failed");
+					}
+				}
+			}
+		}
+	}
+
+	fn device_left(&mut self, device: libusb::Device) {
+		// Upgrade reference to an Arc
+		if let (Some(ledger), Some(trezor)) = (self.ledger.upgrade(), self.trezor.upgrade()) {
+			// Version ID and Product ID are available
+			if let Ok((vid, pid)) = Self::extract_device_info(&device) {
+				if trezor::is_valid_trezor(vid, pid) {
+					if !trezor::try_connect_polling(&trezor, &MAX_POLLING_DURATION, DeviceDirection::Left) {
+						trace!(target: "hw", "Trezor device was detected but disconnection failed");
+					}
+				} else if ledger::is_valid_ledger(vid, pid) {
+					if !ledger::try_connect_polling(&ledger, &MAX_POLLING_DURATION, DeviceDirection::Left) {
+						trace!(target: "hw", "Ledger device was detected but disconnection failed");
+					}
+				}
+			}
+		}
+	}
+}
+
+/// Helper to determine if a device is a valid HID
+pub fn is_valid_hid_device(usage_page: u16, interface_number: i32) -> bool {
+	usage_page == HID_GLOBAL_USAGE_PAGE || interface_number == HID_USB_DEVICE_CLASS as i32
+}
--- a/accounts/hw/src/trezor.rs
+++ b/accounts/hw/src/trezor.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Trezor hardware wallet module. Supports Trezor v1.
 //! See <http://doc.satoshilabs.com/trezor-tech/api-protobuf.html>
@@ -20,9 +20,9 @@
 //! for protocol details.

 use std::cmp::{min, max};
-use std::sync::{atomic, atomic::AtomicBool, Arc, Weak};
+use std::sync::Arc;
 use std::time::{Duration, Instant};
-use std::{fmt, thread};
+use std::fmt;

 use ethereum_types::{U256, H256, Address};
 use ethkey::Signature;
@@ -30,7 +30,7 @@ use hidapi;
 use libusb;
 use parking_lot::{Mutex, RwLock};
 use protobuf::{self, Message, ProtobufEnum};
-use super::{DeviceDirection, WalletInfo, TransactionInfo, KeyPath, Wallet, Device, USB_DEVICE_CLASS_DEVICE, POLLING_DURATION};
+use super::{DeviceDirection, WalletInfo, TransactionInfo, KeyPath, Wallet, Device, is_valid_hid_device};
 use trezor_sys::messages::{EthereumAddress, PinMatrixAck, MessageType, EthereumTxRequest, EthereumSignTx, EthereumGetAddress, EthereumTxAck, ButtonAck};

 /// Trezor v1 vendor ID
@@ -48,6 +48,8 @@ pub enum Error {
 	Protocol(&'static str),
 	/// Hidapi error.
 	Usb(hidapi::HidError),
+	/// Libusb error
+	LibUsb(libusb::Error),
 	/// Device with request key is not available.
 	KeyNotFound,
 	/// Signing has been cancelled by user.
@@ -62,6 +64,8 @@ pub enum Error {
 	NoDeviceArrived,
 	/// No device left
 	NoDeviceLeft,
+	/// Invalid PID or VID
+	InvalidDevice,
 }

 impl fmt::Display for Error {
@@ -69,13 +73,15 @@ impl fmt::Display for Error {
 		match *self {
 			Error::Protocol(ref s) => write!(f, "Trezor protocol error: {}", s),
 			Error::Usb(ref e) => write!(f, "USB communication error: {}", e),
+			Error::LibUsb(ref e) => write!(f, "LibUSB communication error: {}", e),
 			Error::KeyNotFound => write!(f, "Key not found"),
 			Error::UserCancel => write!(f, "Operation has been cancelled"),
 			Error::BadMessageType => write!(f, "Bad Message Type in RPC call"),
 			Error::LockedDevice(ref s) => write!(f, "Device is locked, needs PIN to perform operations: {}", s),
 			Error::NoSigningMessage=> write!(f, "Signing messages are not supported by Trezor"),
 			Error::NoDeviceArrived => write!(f, "No device arrived"),
-			Error::NoDeviceLeft=> write!(f, "No device left"),
+			Error::NoDeviceLeft => write!(f, "No device left"),
+			Error::InvalidDevice => write!(f, "Device with non-supported product ID or vendor ID was detected"),
 		}
 	}
 }
@@ -86,6 +92,12 @@ impl From<hidapi::HidError> for Error {
 	}
 }

+impl From<libusb::Error> for Error {
+	fn from(err: libusb::Error) -> Self {
+		Error::LibUsb(err)
+	}
+}
+
 impl From<protobuf::ProtobufError> for Error {
 	fn from(_: protobuf::ProtobufError) -> Self {
 		Error::Protocol(&"Could not read response from Trezor Device")
@@ -93,7 +105,7 @@ impl From<protobuf::ProtobufError> for Error {
 }

 /// Trezor device manager
-pub (crate) struct Manager {
+pub struct Manager {
 	usb: Arc<Mutex<hidapi::HidApi>>,
 	devices: RwLock<Vec<Device>>,
 	locked_devices: RwLock<Vec<String>>,
@@ -108,42 +120,13 @@ enum HidVersion {

 impl Manager {
 	/// Create a new instance.
-	pub fn new(hidapi: Arc<Mutex<hidapi::HidApi>>, exiting: Arc<AtomicBool>) -> Result<Arc<Self>, libusb::Error> {
-		let manager = Arc::new(Self {
-			usb: hidapi,
+	pub fn new(usb: Arc<Mutex<hidapi::HidApi>>) -> Arc<Self> {
+		Arc::new(Self {
+			usb,
 			devices: RwLock::new(Vec::new()),
 			locked_devices: RwLock::new(Vec::new()),
 			key_path: RwLock::new(KeyPath::Ethereum),
-		});
-
-		let usb_context = Arc::new(libusb::Context::new()?);
-		let m = manager.clone();
-
-		// Subscribe to TREZOR V1
-		// Note, this support only TREZOR V1 because TREZOR V2 has a different vendorID for some reason
-		// Also, we now only support one product as the second argument specifies
-		usb_context.register_callback(
-			Some(TREZOR_VID), Some(TREZOR_PIDS[0]), Some(USB_DEVICE_CLASS_DEVICE),
-			Box::new(EventHandler::new(Arc::downgrade(&manager))))?;
-
-		// Trezor event thread
-		thread::Builder::new()
-			.name("hw_wallet_trezor".to_string())
-			.spawn(move || {
-				if let Err(e) = m.update_devices(DeviceDirection::Arrived) {
-					debug!(target: "hw", "Trezor couldn't connect at startup, error: {}", e);
-				}
-				loop {
-					usb_context.handle_events(Some(Duration::from_millis(500)))
-						.unwrap_or_else(|e| debug!(target: "hw", "Trezor event handler error: {}", e));
-					if exiting.load(atomic::Ordering::Acquire) {
-						break;
-					}
-				}
-			})
-			.ok();
-
-		Ok(manager)
+		})
 	}

 	pub fn pin_matrix_ack(&self, device_path: &str, pin: &str) -> Result<bool, Error> {
@@ -153,7 +136,7 @@ impl Manager {
 			let t = MessageType::MessageType_PinMatrixAck;
 			let mut m = PinMatrixAck::new();
 			m.set_pin(pin.to_string());
-			self.send_device_message(&device, &t, &m)?;
+			self.send_device_message(&device, t, &m)?;
 			let (resp_type, _) = self.read_device_response(&device)?;
 			match resp_type {
 				// Getting an Address back means it's unlocked, this is undocumented behavior
@@ -178,7 +161,7 @@ impl Manager {
 		match resp_type {
 			MessageType::MessageType_Cancel => Err(Error::UserCancel),
 			MessageType::MessageType_ButtonRequest => {
-				self.send_device_message(handle, &MessageType::MessageType_ButtonAck, &ButtonAck::new())?;
+				self.send_device_message(handle, MessageType::MessageType_ButtonAck, &ButtonAck::new())?;
 				// Signing loop goes back to the top and reading blocks
 				// for up to 5 minutes waiting for response from the device
 				// if the user doesn't click any button within 5 minutes you
@@ -191,7 +174,7 @@ impl Manager {
 					let mut msg = EthereumTxAck::new();
 					let len = resp.get_data_length() as usize;
 					msg.set_data_chunk(data[..len].to_vec());
-					self.send_device_message(handle, &MessageType::MessageType_EthereumTxAck, &msg)?;
+					self.send_device_message(handle, MessageType::MessageType_EthereumTxAck, &msg)?;
 					self.signing_loop(handle, chain_id, &data[len..])
 				} else {
 					let v = resp.get_signature_v();
@@ -216,8 +199,8 @@ impl Manager {
 		}
 	}

-	fn send_device_message(&self, device: &hidapi::HidDevice, msg_type: &MessageType, msg: &Message) -> Result<usize, Error> {
-		let msg_id = *msg_type as u16;
+	fn send_device_message(&self, device: &hidapi::HidDevice, msg_type: MessageType, msg: &Message) -> Result<usize, Error> {
+		let msg_id = msg_type as u16;
 		let mut message = msg.write_to_bytes()?;
 		let msg_size = message.len();
 		let mut data = Vec::new();
@@ -284,7 +267,7 @@ impl Manager {
 	}
 }

-impl <'a>Wallet<'a> for Manager {
+impl<'a> Wallet<'a> for Manager {
 	type Error = Error;
 	type Transaction = &'a TransactionInfo;

@@ -316,7 +299,7 @@ impl <'a>Wallet<'a> for Manager {
 			message.set_chain_id(c_id as u32);
 		}

-		self.send_device_message(&handle, &msg_type, &message)?;
+		self.send_device_message(&handle, msg_type, &message)?;

 		self.signing_loop(&handle, &t_info.chain_id, &t_info.data[first_chunk_length..])
 	}
@@ -332,13 +315,9 @@ impl <'a>Wallet<'a> for Manager {
 		let num_prev_devices = self.devices.read().len();

 		let detected_devices = devices.iter()
-			.filter(|&d| {
-				let is_trezor = d.vendor_id == TREZOR_VID;
-				let is_supported_product = TREZOR_PIDS.contains(&d.product_id);
-				let is_valid = d.usage_page == 0xFF00 || d.interface_number == 0;
-
-				is_trezor && is_supported_product && is_valid
-			})
+			.filter(|&d| is_valid_trezor(d.vendor_id, d.product_id) &&
+					is_valid_hid_device(d.usage_page, d.interface_number)
+			)
 			.fold(Vec::new(), |mut v, d| {
 				match self.read_device(&usb, &d) {
 					Ok(info) => {
@@ -349,7 +328,7 @@ impl <'a>Wallet<'a> for Manager {
 				};
 				v
 			});
-		
+
 		let num_curr_devices = detected_devices.len();
 		*self.devices.write() = detected_devices;

@@ -363,7 +342,7 @@ impl <'a>Wallet<'a> for Manager {
 			}
 			DeviceDirection::Left => {
 				if num_prev_devices > num_curr_devices {
-					Ok(num_prev_devices- num_curr_devices)
+					Ok(num_prev_devices - num_curr_devices)
 				} else {
 					Err(Error::NoDeviceLeft)
 				}
@@ -413,7 +392,7 @@ impl <'a>Wallet<'a> for Manager {
 			KeyPath::EthereumClassic => message.set_address_n(ETC_DERIVATION_PATH.to_vec()),
 		}
 		message.set_show_display(false);
-		self.send_device_message(&device, &typ, &message)?;
+		self.send_device_message(&device, typ, &message)?;

 		let (resp_type, bytes) = self.read_device_response(&device)?;
 		match resp_type {
@@ -432,8 +411,8 @@ impl <'a>Wallet<'a> for Manager {
 	}
 }

-// Try to connect to the device using polling in at most the time specified by the `timeout`
-fn try_connect_polling(trezor: &Manager, duration: &Duration, dir: DeviceDirection) -> bool {
+/// Poll the device in maximum `max_polling_duration` if it doesn't succeed
+pub fn try_connect_polling(trezor: &Manager, duration: &Duration, dir: DeviceDirection) -> bool {
 	let start_time = Instant::now();
 	while start_time.elapsed() <= *duration {
 		if let Ok(num_devices) = trezor.update_devices(dir) {
@@ -444,40 +423,9 @@ fn try_connect_polling(trezor: &Manager, duration: &Duration, dir: DeviceDirecti
 	false
 }

-/// Trezor event handler
-/// A separate thread is handling incoming events
-///
-/// Note, that this run to completion and race-conditions can't occur but this can
-/// therefore starve other events for being process with a spinlock or similar
-struct EventHandler {
-	trezor: Weak<Manager>,
-}
-
-impl EventHandler {
-	/// Trezor event handler constructor
-	pub fn new(trezor: Weak<Manager>) -> Self {
-		Self { trezor }
-	}
-}
-
-impl libusb::Hotplug for EventHandler {
-	fn device_arrived(&mut self, _device: libusb::Device) {
-		debug!(target: "hw", "Trezor V1 arrived");
-		if let Some(trezor) = self.trezor.upgrade() {
-			if try_connect_polling(&trezor, &POLLING_DURATION, DeviceDirection::Arrived) != true {
-				trace!(target: "hw", "No Trezor connected");
-			}
-		}
-	}
-
-	fn device_left(&mut self, _device: libusb::Device) {
-		debug!(target: "hw", "Trezor V1 left");
-		if let Some(trezor) = self.trezor.upgrade() {
-			if try_connect_polling(&trezor, &POLLING_DURATION, DeviceDirection::Left) != true {
-				trace!(target: "hw", "No Trezor disconnected");
-			}
-		}
-	}
+/// Check if the detected device is a Trezor device by checking both the product ID and the vendor ID
+pub fn is_valid_trezor(vid: u16, pid: u16) -> bool {
+	vid == TREZOR_VID && TREZOR_PIDS.contains(&pid)
 }

 #[test]
@@ -485,32 +433,31 @@ impl libusb::Hotplug for EventHandler {
 /// This test can't be run without an actual trezor device connected
 /// (and unlocked) attached to the machine that's running the test
 fn test_signature() {
-	use ethereum_types::{H160, H256, U256};
+	use ethereum_types::Address;
+	use MAX_POLLING_DURATION;
+	use super::HardwareWalletManager;

-	let manager = Manager::new(
-		Arc::new(Mutex::new(hidapi::HidApi::new().expect("HidApi"))),
-		Arc::new(AtomicBool::new(false))
-	).expect("HardwareWalletManager");
-	
-	let addr: Address = H160::from("some_addr");
+	let manager = HardwareWalletManager::new().unwrap();

-	assert_eq!(try_connect_polling(&manager.clone(), &POLLING_DURATION, DeviceDirection::Arrived), true);
+	assert_eq!(try_connect_polling(&manager.trezor, &MAX_POLLING_DURATION, DeviceDirection::Arrived), true);
+
+	let addr: Address = manager.list_wallets()
+		.iter()
+		.filter(|d| d.name == "TREZOR".to_string() && d.manufacturer == "SatoshiLabs".to_string())
+		.nth(0)
+		.map(|d| d.address)
+		.unwrap();

 	let t_info = TransactionInfo {
 		nonce: U256::from(1),
 		gas_price: U256::from(100),
 		gas_limit: U256::from(21_000),
-		to: Some(H160::from("some_other_addr")),
-		chain_id: Some(17),
+		to: Some(Address::from(1337)),
+		chain_id: Some(1),
 		value: U256::from(1_000_000),
 		data: (&[1u8; 3000]).to_vec(),
 	};
-	let signature = manager.sign_transaction(&addr, &t_info).unwrap();
-	let expected = Signature::from_rsv(
-		&H256::from("device_specific_r"),
-		&H256::from("device_specific_s"),
-		0x01
-		);

-	assert_eq!(signature, expected)
+	let signature = manager.trezor.sign_transaction(&addr, &t_info);
+	assert!(signature.is_ok());
 }
--- a/accounts/src/account_data.rs
+++ b/accounts/src/account_data.rs
@@ -0,0 +1,73 @@
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.
+
+// Parity Ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity Ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Account Metadata
+
+use std::{
+	collections::HashMap,
+	time::Instant,
+};
+
+use ethkey::{Address, Password};
+use serde_derive::{Serialize, Deserialize};
+use serde_json;
+
+/// Type of unlock.
+#[derive(Clone, PartialEq)]
+pub enum Unlock {
+	/// If account is unlocked temporarily, it should be locked after first usage.
+	OneTime,
+	/// Account unlocked permanently can always sign message.
+	/// Use with caution.
+	Perm,
+	/// Account unlocked with a timeout
+	Timed(Instant),
+}
+
+/// Data associated with account.
+#[derive(Clone)]
+pub struct AccountData {
+	pub unlock: Unlock,
+	pub password: Password,
+}
+
+/// Collected account metadata
+#[derive(Default, Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct AccountMeta {
+	/// The name of the account.
+	pub name: String,
+	/// The rest of the metadata of the account.
+	pub meta: String,
+	/// The 128-bit Uuid of the account, if it has one (brain-wallets don't).
+	pub uuid: Option<String>,
+}
+
+impl AccountMeta {
+	/// Read a hash map of Address -> AccountMeta
+	pub fn read<R>(reader: R) -> Result<HashMap<Address, Self>, serde_json::Error> where
+		R: ::std::io::Read,
+	{
+		serde_json::from_reader(reader)
+	}
+
+	/// Write a hash map of Address -> AccountMeta
+	pub fn write<W>(m: &HashMap<Address, Self>, writer: &mut W) -> Result<(), serde_json::Error> where
+		W: ::std::io::Write,
+	{
+		serde_json::to_writer(writer, m)
+	}
+}
+
--- a/accounts/src/error.rs
+++ b/accounts/src/error.rs
@@ -0,0 +1,56 @@
+// Copyright 2015-2018 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::fmt;
+
+use ethstore::{Error as SSError};
+use hardware_wallet::{Error as HardwareError};
+
+/// Signing error
+#[derive(Debug)]
+pub enum SignError {
+	/// Account is not unlocked
+	NotUnlocked,
+	/// Account does not exist.
+	NotFound,
+	/// Low-level hardware device error.
+	Hardware(HardwareError),
+	/// Low-level error from store
+	SStore(SSError),
+}
+
+impl fmt::Display for SignError {
+	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+		match *self {
+			SignError::NotUnlocked => write!(f, "Account is locked"),
+			SignError::NotFound => write!(f, "Account does not exist"),
+			SignError::Hardware(ref e) => write!(f, "{}", e),
+			SignError::SStore(ref e) => write!(f, "{}", e),
+		}
+	}
+}
+
+impl From<HardwareError> for SignError {
+	fn from(e: HardwareError) -> Self {
+		SignError::Hardware(e)
+	}
+}
+
+impl From<SSError> for SignError {
+	fn from(e: SSError) -> Self {
+		SignError::SStore(e)
+	}
+}
--- a/ethcore/src/account_provider/mod.rs
+++ b/ethcore/src/account_provider/mod.rs
@@ -1,107 +1,68 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
+
+#![warn(missing_docs)]

 //! Account management.

+mod account_data;
+mod error;
 mod stores;

+#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
+extern crate fake_hardware_wallet as hardware_wallet;
+
+use self::account_data::{Unlock, AccountData};
 use self::stores::AddressBook;

 use std::collections::HashMap;
-use std::fmt;
 use std::time::{Instant, Duration};

+use common_types::transaction::{Action, Transaction};
+use ethkey::{Address, Message, Public, Secret, Password, Random, Generator};
 use ethstore::accounts_dir::MemoryDirectory;
-use ethstore::ethkey::{Address, Message, Public, Secret, Password, Random, Generator};
-use ethjson::misc::AccountMeta;
 use ethstore::{
-	SimpleSecretStore, SecretStore, Error as SSError, EthStore, EthMultiStore,
+	SimpleSecretStore, SecretStore, EthStore, EthMultiStore,
 	random_string, SecretVaultRef, StoreAccountRef, OpaqueSecret,
 };
+use log::{warn, debug};
 use parking_lot::RwLock;

-pub use ethstore::ethkey::Signature;
-pub use ethstore::{Derivation, IndexDerivation, KeyFile};
+pub use ethkey::Signature;
+pub use ethstore::{Derivation, IndexDerivation, KeyFile, Error};
 pub use hardware_wallet::{Error as HardwareError, HardwareWalletManager, KeyPath, TransactionInfo};
-pub use super::transaction::{Action, Transaction};

-/// Type of unlock.
-#[derive(Clone, PartialEq)]
-enum Unlock {
-	/// If account is unlocked temporarily, it should be locked after first usage.
-	OneTime,
-	/// Account unlocked permanently can always sign message.
-	/// Use with caution.
-	Perm,
-	/// Account unlocked with a timeout
-	Timed(Instant),
-}
-
-/// Data associated with account.
-#[derive(Clone)]
-struct AccountData {
-	unlock: Unlock,
-	password: Password,
-}
-
-/// Signing error
-#[derive(Debug)]
-pub enum SignError {
-	/// Account is not unlocked
-	NotUnlocked,
-	/// Account does not exist.
-	NotFound,
-	/// Low-level hardware device error.
-	Hardware(HardwareError),
-	/// Low-level error from store
-	SStore(SSError),
-}
-
-impl fmt::Display for SignError {
-	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-		match *self {
-			SignError::NotUnlocked => write!(f, "Account is locked"),
-			SignError::NotFound => write!(f, "Account does not exist"),
-			SignError::Hardware(ref e) => write!(f, "{}", e),
-			SignError::SStore(ref e) => write!(f, "{}", e),
-		}
-	}
-}
-
-impl From<HardwareError> for SignError {
-	fn from(e: HardwareError) -> Self {
-		SignError::Hardware(e)
-	}
-}
-
-impl From<SSError> for SignError {
-	fn from(e: SSError) -> Self {
-		SignError::SStore(e)
-	}
-}
-
-/// `AccountProvider` errors.
-pub type Error = SSError;
-
-fn transient_sstore() -> EthMultiStore {
-	EthMultiStore::open(Box::new(MemoryDirectory::default())).expect("MemoryDirectory load always succeeds; qed")
-}
+pub use self::account_data::AccountMeta;
+pub use self::error::SignError;

 type AccountToken = Password;

+/// Account management settings.
+#[derive(Debug, Default)]
+pub struct AccountProviderSettings {
+	/// Enable hardware wallet support.
+	pub enable_hardware_wallets: bool,
+	/// Use the classic chain key on the hardware wallet.
+	pub hardware_wallet_classic_key: bool,
+	/// Store raw account secret when unlocking the account permanently.
+	pub unlock_keep_secret: bool,
+	/// Disallowed accounts.
+	pub blacklisted_accounts: Vec<Address>,
+}
+
 /// Account management.
 /// Responsible for unlocking accounts.
 pub struct AccountProvider {
@@ -124,27 +85,8 @@ pub struct AccountProvider {
 	blacklisted_accounts: Vec<Address>,
 }

-/// Account management settings.
-pub struct AccountProviderSettings {
-	/// Enable hardware wallet support.
-	pub enable_hardware_wallets: bool,
-	/// Use the classic chain key on the hardware wallet.
-	pub hardware_wallet_classic_key: bool,
-	/// Store raw account secret when unlocking the account permanently.
-	pub unlock_keep_secret: bool,
-	/// Disallowed accounts.
-	pub blacklisted_accounts: Vec<Address>,
-}
-
-impl Default for AccountProviderSettings {
-	fn default() -> Self {
-		AccountProviderSettings {
-			enable_hardware_wallets: false,
-			hardware_wallet_classic_key: false,
-			unlock_keep_secret: false,
-			blacklisted_accounts: vec![],
-		}
-	}
+fn transient_sstore() -> EthMultiStore {
+	EthMultiStore::open(Box::new(MemoryDirectory::default())).expect("MemoryDirectory load always succeeds; qed")
 }

 impl AccountProvider {
@@ -221,7 +163,7 @@ impl AccountProvider {
 		let account = self.sstore.insert_account(SecretVaultRef::Root, secret, password)?;
 		if self.blacklisted_accounts.contains(&account.address) {
 			self.sstore.remove_account(&account, password)?;
-			return Err(SSError::InvalidAccount.into());
+			return Err(Error::InvalidAccount.into());
 		}
 		Ok(account.address)
 	}
@@ -251,7 +193,7 @@ impl AccountProvider {
 		let account = self.sstore.import_wallet(SecretVaultRef::Root, json, password, gen_id)?;
 		if self.blacklisted_accounts.contains(&account.address) {
 			self.sstore.remove_account(&account, password)?;
-			return Err(SSError::InvalidAccount.into());
+			return Err(Error::InvalidAccount.into());
 		}
 		Ok(Address::from(account.address).into())
 	}
@@ -284,7 +226,7 @@ impl AccountProvider {
 				return Ok(accounts.into_iter().map(|a| a.address).collect());
 			}
 		}
-		Err(SSError::Custom("No hardware wallet accounts were found".into()))
+		Err(Error::Custom("No hardware wallet accounts were found".into()))
 	}

 	/// Get a list of paths to locked hardware wallets
@@ -669,7 +611,7 @@ impl AccountProvider {
 mod tests {
 	use super::{AccountProvider, Unlock};
 	use std::time::{Duration, Instant};
-	use ethstore::ethkey::{Generator, Random, Address};
+	use ethkey::{Generator, Random, Address};
 	use ethstore::{StoreAccountRef, Derivation};
 	use ethereum_types::H256;

--- a/ethcore/src/account_provider/stores.rs
+++ b/ethcore/src/account_provider/stores.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Address Book Store

@@ -20,8 +20,10 @@ use std::{fs, fmt, hash, ops};
 use std::collections::HashMap;
 use std::path::{Path, PathBuf};

-use ethstore::ethkey::Address;
-use ethjson::misc::AccountMeta;
+use ethkey::Address;
+use log::{trace, warn};
+
+use crate::AccountMeta;

 /// Disk-backed map from Address to String. Uses JSON.
 pub struct AddressBook {
@@ -153,8 +155,8 @@ impl<K: hash::Hash + Eq, V> DiskMap<K, V> {
 mod tests {
 	use super::AddressBook;
 	use std::collections::HashMap;
-	use ethjson::misc::AccountMeta;
 	use tempdir::TempDir;
+	use crate::account_data::AccountMeta;

 	#[test]
 	fn should_save_and_reload_address_book() {
@@ -163,7 +165,9 @@ mod tests {
 		b.set_name(1.into(), "One".to_owned());
 		b.set_meta(1.into(), "{1:1}".to_owned());
 		let b = AddressBook::new(tempdir.path());
-		assert_eq!(b.get(), hash_map![1.into() => AccountMeta{name: "One".to_owned(), meta: "{1:1}".to_owned(), uuid: None}]);
+		assert_eq!(b.get(), vec![
+		   (1, AccountMeta {name: "One".to_owned(), meta: "{1:1}".to_owned(), uuid: None})
+		].into_iter().map(|(a, b)| (a.into(), b)).collect::<HashMap<_, _>>());
 	}

 	#[test]
@@ -177,9 +181,9 @@ mod tests {
 		b.remove(2.into());

 		let b = AddressBook::new(tempdir.path());
-		assert_eq!(b.get(), hash_map![
-			1.into() => AccountMeta{name: "One".to_owned(), meta: "{}".to_owned(), uuid: None},
-			3.into() => AccountMeta{name: "Three".to_owned(), meta: "{}".to_owned(), uuid: None}
-		]);
+		assert_eq!(b.get(), vec![
+			(1, AccountMeta{name: "One".to_owned(), meta: "{}".to_owned(), uuid: None}),
+			(3, AccountMeta{name: "Three".to_owned(), meta: "{}".to_owned(), uuid: None}),
+		].into_iter().map(|(a, b)| (a.into(), b)).collect::<HashMap<_, _>>());
 	}
 }
--- a/chainspec/Cargo.toml
+++ b/chainspec/Cargo.toml
@@ -6,4 +6,3 @@ authors = ["Marek Kotewicz <marek@parity.io>"]
 [dependencies]
 ethjson = { path = "../json" }
 serde_json = "1.0"
-serde_ignored = "0.0.4"
--- a/chainspec/src/main.rs
+++ b/chainspec/src/main.rs
@@ -1,24 +1,22 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate serde_json;
-extern crate serde_ignored;
 extern crate ethjson;

-use std::collections::BTreeSet;
 use std::{fs, env, process};
 use ethjson::spec::Spec;

@@ -41,24 +39,11 @@ fn main() {
 		Err(_) => quit(&format!("{} could not be opened", path)),
 	};

-	let mut unused = BTreeSet::new();
-	let mut deserializer = serde_json::Deserializer::from_reader(file);
-
-	let spec: Result<Spec, _> = serde_ignored::deserialize(&mut deserializer, |field| {
-		unused.insert(field.to_string());
-	});
+	let spec: Result<Spec, _> = serde_json::from_reader(file);

 	if let Err(err) = spec {
 		quit(&format!("{} {}", path, err.to_string()));
 	}

-	if !unused.is_empty() {
-		let err = unused.into_iter()
-			.map(|field| format!("{} unexpected field `{}`", path, field))
-			.collect::<Vec<_>>()
-			.join("\n");
-		quit(&err);
-	}
-
 	println!("{} is valid", path);
 }
--- a/cli-signer/Cargo.toml
+++ b/cli-signer/Cargo.toml
@@ -3,11 +3,11 @@ authors = ["Parity <admin@parity.io>"]
 description = "Parity Cli Tool"
 homepage = "http://parity.io"
 license = "GPL-3.0"
-name = "rpc-cli"
+name = "cli-signer"
 version = "1.4.0"

 [dependencies]
 futures = "0.1"
 rpassword = "1.0"
 parity-rpc = { path = "../rpc" }
-parity-rpc-client = { path = "../rpc_client" }
+parity-rpc-client = { path = "rpc-client" }
--- a/cli-signer/rpc-client/Cargo.toml
+++ b/cli-signer/rpc-client/Cargo.toml
@@ -13,8 +13,8 @@ serde = "1.0"
 serde_json = "1.0"
 url = "1.2.0"
 matches = "0.1"
-parking_lot = "0.6"
-jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-2.2" }
-jsonrpc-ws-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-2.2" }
-parity-rpc = { path = "../rpc" }
+parking_lot = "0.7"
+jsonrpc-core = "10.0.1"
+jsonrpc-ws-server = "10.0.1"
+parity-rpc = { path = "../../rpc" }
 keccak-hash = "0.1"
--- a/cli-signer/rpc-client/src/client.rs
+++ b/cli-signer/rpc-client/src/client.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use std::fmt::{Debug, Formatter, Error as FmtError};
 use std::io::{BufReader, BufRead};
--- a/cli-signer/rpc-client/src/lib.rs
+++ b/cli-signer/rpc-client/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 pub mod client;
 pub mod signer_client;
--- a/cli-signer/rpc-client/src/signer_client.rs
+++ b/cli-signer/rpc-client/src/signer_client.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 use client::{Rpc, RpcError};
 use rpc::signer::{ConfirmationRequest, TransactionModification, U256, TransactionCondition};
--- a/cli-signer/src/lib.rs
+++ b/cli-signer/src/lib.rs
@@ -1,18 +1,18 @@
-// Copyright 2015-2018 Parity Technologies (UK) Ltd.
-// This file is part of Parity.
+// Copyright 2015-2019 Parity Technologies (UK) Ltd.
+// This file is part of Parity Ethereum.

-// Parity is free software: you can redistribute it and/or modify
+// Parity Ethereum is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.

-// Parity is distributed in the hope that it will be useful,
+// Parity Ethereum is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.

 // You should have received a copy of the GNU General Public License
-// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+// along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 extern crate futures;
 extern crate rpassword;
--- a/devtools/Cargo.toml
+++ b/devtools/Cargo.toml
@@ -1,7 +0,0 @@
-[package]
-description = "Ethcore development/test/build tools"
-homepage = "http://parity.io"
-license = "GPL-3.0"
-name = "ethcore-devtools"
-version = "1.12.0"
-authors = ["Parity Technologies <admin@parity.io>"]
--- a/docs/CHANGELOG-2.0.md
+++ b/docs/CHANGELOG-2.0.md
@@ -1,3 +1,26 @@
+Note: Parity Ethereum 2.0 reached End-of-Life on 2018-11-15 (EOL).
+
+## Parity-Ethereum [v2.0.9](https://github.com/paritytech/parity-ethereum/releases/tag/v2.0.9) (2018-10-29)
+
+Parity-Ethereum 2.0.9-stable is a bug-fix release to improve performance and stability.
+
+The full list of included changes:
+
+- Backports: parity stable 2.0.9 ([#9786](https://github.com/paritytech/parity-ethereum/pull/9786))
+  - Version: bump parity stable to 2.0.9
+  - Ethcore: bump ropsten forkblock checkpoint ([#9775](https://github.com/paritytech/parity-ethereum/pull/9775))
+  - Ethcore: handle vm exception when estimating gas ([#9615](https://github.com/paritytech/parity-ethereum/pull/9615))
+  - Update jsonrpc-core to a1b2bb742ce16d1168669ffb13ffe856e8131228 ([#9780](https://github.com/paritytech/parity-ethereum/pull/9780))
+  - Removed "rustup" & added new runner tag ([#9731](https://github.com/paritytech/parity-ethereum/pull/9731))
+    - Removed "rustup" & added new runner tag
+    - Exchanged tag "rust-windows" with "windows"
+    - Revert windows tag change
+  - Allow zero chain id in EIP155 signing process ([#9792](https://github.com/paritytech/parity-ethereum/pull/9792))
+    - Allow zero chain id in EIP155 signing process
+    - Rename test
+    - Fix test failure
+  - Insert dev account before unlocking ([#9813](https://github.com/paritytech/parity-ethereum/pull/9813))
+
 ## Parity-Ethereum [v2.0.8](https://github.com/paritytech/parity-ethereum/releases/tag/v2.0.8) (2018-10-16)

 Parity-Ethereum 2.0.8-stable is a release that fixes a consensus issue with the recent Constantinople release. Upgrading is mandatory whatever network you are connected to that plans enabling EIP-1283, e.g., Ropsten, Kovan, Ethereum.
--- a/docs/CHANGELOG-2.1.md
+++ b/docs/CHANGELOG-2.1.md
--- a/docs/CHANGELOG-2.2.md
+++ b/docs/CHANGELOG-2.2.md
@@ -0,0 +1,317 @@
+## Parity-Ethereum [v2.2.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.7) (2019-01-15)
+
+Parity-Ethereum 2.2.7-stable is a consensus-relevant security release that reverts Constantinople on the Ethereum network. Upgrading is mandatory for Ethereum, and strongly recommended for other networks.
+
+- **Consensus** - Ethereum Network: Pull Constantinople protocol upgrade on Ethereum ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
+  - Read more: [Security Alert: Ethereum Constantinople Postponement](https://blog.ethereum.org/2019/01/15/security-alert-ethereum-constantinople-postponement/)
+- **Networking** - All networks: Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
+- **Wasm** - Kovan Network: Update pwasm-utils to 0.6.1 ([#10134](https://github.com/paritytech/parity-ethereum/pull/10134))
+
+_Note:_ This release marks Parity 2.2 as _stable_. All versions of Parity 2.1 now reached _end of life_.
+
+The full list of included changes:
+
+- Backports for stable 2.2.7 ([#10163](https://github.com/paritytech/parity-ethereum/pull/10163))
+  - Version: bump stable to 2.2.7
+  - Version: mark 2.2 track stable
+  - Version: mark update critical on all networks
+  - Handle the case for contract creation on an empty but exist account with storage items ([#10065](https://github.com/paritytech/parity-ethereum/pull/10065))
+  - Fix _cannot recursively call into `Core`_ issue ([#10144](https://github.com/paritytech/parity-ethereum/pull/10144))
+  - Snap: fix path in script ([#10157](https://github.com/paritytech/parity-ethereum/pull/10157))
+  - Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
+  - Version: bump fork blocks for kovan and foundation, mark releases non critical
+  - Pull constantinople on ethereum network ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
+
+## Parity-Ethereum [v2.2.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.6) (2019-01-10)
+
+Parity-Ethereum 2.2.6-beta is a bugfix release that improves performance and stability.
+
+The full list of included changes:
+
+- Beta backports v2.2.6 ([#10113](https://github.com/paritytech/parity-ethereum/pull/10113))
+  - Version: bump beta to v2.2.6
+  - Fill transaction hash on ethGetLog of light client. ([#9938](https://github.com/paritytech/parity-ethereum/pull/9938))
+  - Fix pubsub new_blocks notifications to include all blocks ([#9987](https://github.com/paritytech/parity-ethereum/pull/9987))
+  - Finality: dont require chain head to be in the chain ([#10054](https://github.com/paritytech/parity-ethereum/pull/10054))
+  - Handle the case for contract creation on an empty but exist account with storage items ([#10065](https://github.com/paritytech/parity-ethereum/pull/10065))
+  - Autogen docs for the "Configuring Parity Ethereum" wiki page. ([#10067](https://github.com/paritytech/parity-ethereum/pull/10067))
+  - HF in POA Sokol (2019-01-04) ([#10077](https://github.com/paritytech/parity-ethereum/pull/10077))
+  - Add --locked when running cargo ([#10107](https://github.com/paritytech/parity-ethereum/pull/10107))
+  - Ethcore: update hardcoded headers ([#10123](https://github.com/paritytech/parity-ethereum/pull/10123))
+  - Identity fix ([#10128](https://github.com/paritytech/parity-ethereum/pull/10128))
+  - Update pwasm-utils to 0.6.1 ([#10134](https://github.com/paritytech/parity-ethereum/pull/10134))
+  - Make sure parent block is not in importing queue when importing ancient blocks ([#10138](https://github.com/paritytech/parity-ethereum/pull/10138))
+  - CI: re-enable snap publishing ([#10142](https://github.com/paritytech/parity-ethereum/pull/10142))
+  - HF in POA Core (2019-01-18) - Constantinople ([#10155](https://github.com/paritytech/parity-ethereum/pull/10155))
+  - Version: mark upgrade critical on kovan
+
+## Parity-Ethereum [v2.2.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.5) (2018-12-14)
+
+Parity-Ethereum 2.2.5-beta is an important release that introduces Constantinople fork at block 7080000 on Mainnet.
+This release also contains a fix for chains using AuRa + EmptySteps. Read carefully if this applies to you.
+If you have a chain with`empty_steps` already running, some blocks most likely contain non-strict entries (unordered or duplicated empty steps). In this release`strict_empty_steps_transition` **is enabled by default at block 0** for any chain with `empty_steps`.
+If your network uses `empty_steps` you **must**:
+- plan a hard fork and change `strict_empty_steps_transition` to the desire fork block
+- update the clients of the whole network to 2.2.5-beta / 2.1.10-stable.
+If for some reason you don't want to do this please set`strict_empty_steps_transition` to `0xfffffffff` to disable it.
+
+The full list of included changes:
+- Backports for beta 2.2.5 ([#10047](https://github.com/paritytech/parity-ethereum/pull/10047))
+	- Bump beta to 2.2.5 ([#10047](https://github.com/paritytech/parity-ethereum/pull/10047))
+	- Fix empty steps ([#9939](https://github.com/paritytech/parity-ethereum/pull/9939))
+		- Prevent sending empty step message twice
+		- Prevent sending empty step and then block in the same step
+		- Don't accept double empty steps
+		- Do basic validation of self-sealed blocks
+	- Strict empty steps validation ([#10041](https://github.com/paritytech/parity-ethereum/pull/10041))
+		- Enables strict verification of empty steps - there can be no duplicates and empty steps should be ordered inside the seal.
+		- Note that authorities won't produce invalid seals after [#9939](https://github.com/paritytech/parity-ethereum/pull/9939), this PR just adds verification to the seal to prevent forging incorrect blocks and potentially causing consensus issues.
+		- This features is enabled by default so any AuRa + EmptySteps chain should set strict_empty_steps_transition fork block number in their spec and upgrade to v2.2.5-beta or v2.1.10-stable.
+	- ethcore: enable constantinople on ethereum ([#10031](https://github.com/paritytech/parity-ethereum/pull/10031))
+		- ethcore: change blockreward to 2e18 for foundation after constantinople
+		- ethcore: delay diff bomb by 2e6 blocks for foundation after constantinople
+		- ethcore: enable eip-{145,1014,1052,1283} for foundation after constantinople
+	- Change test miner max memory to malloc reports. ([#10024](https://github.com/paritytech/parity-ethereum/pull/10024))
+	- Fix: test corpus_inaccessible panic ([#10019](https://github.com/paritytech/parity-ethereum/pull/10019))
+
+## Parity-Ethereum [v2.2.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.2) (2018-11-29)
+
+Parity-Ethereum 2.2.2-beta is an exciting release. Among others, it improves sync performance, peering stability, block propagation, and transaction propagation times. Also, a warp-sync no longer removes existing blocks from the database, but rather reuses locally available information to decrease sync times and reduces required bandwidth.
+
+Before upgrading to 2.2.2, please also verify the validity of your chain specs. Parity Ethereum now denies unknown fields in the specification. To do this, use the chainspec tool:
+
+```
+cargo build --release -p chainspec
+./target/release/chainspec /path/to/spec.json
+```
+
+Last but not least, JSONRPC APIs which are not yet accepted as an EIP in the `eth`, `personal`, or `web3` namespace, are now considere experimental as their final specification might change in future. These APIs have to be manually enabled by explicitly running `--jsonrpc-experimental`.
+
+The full list of included changes:
+
+- Backports For beta 2.2.2 ([#9976](https://github.com/paritytech/parity-ethereum/pull/9976))
+  - Version: bump beta to 2.2.2
+  - Add experimental RPCs flag ([#9928](https://github.com/paritytech/parity-ethereum/pull/9928))
+  - Keep existing blocks when restoring a Snapshot ([#8643](https://github.com/paritytech/parity-ethereum/pull/8643))
+    - Rename db_restore => client
+    - First step: make it compile!
+    - Second step: working implementation!
+    - Refactoring
+    - Fix tests
+    - Migrate ancient blocks interacting backward
+    - Early return in block migration if snapshot is aborted
+    - Remove RwLock getter (PR Grumble I)
+    - Remove dependency on `Client`: only used Traits
+    - Add test for recovering aborted snapshot recovery
+    - Add test for migrating old blocks
+    - Release RwLock earlier
+    - Revert Cargo.lock
+    - Update _update ancient block_ logic: set local in `commit`
+    - Update typo in ethcore/src/snapshot/service.rs
+  - Adjust requests costs for light client ([#9925](https://github.com/paritytech/parity-ethereum/pull/9925))
+    - Pip Table Cost relative to average peers instead of max peers
+    - Add tracing in PIP new_cost_table
+    - Update stat peer_count
+    - Use number of leeching peers for Light serve costs
+    - Fix test::light_params_load_share_depends_on_max_peers (wrong type)
+    - Remove (now) useless test
+    - Remove `load_share` from LightParams.Config
+    - Add LEECHER_COUNT_FACTOR
+    - Pr Grumble: u64 to u32 for f64 casting
+    - Prevent u32 overflow for avg_peer_count
+    - Add tests for LightSync::Statistics
+  - Fix empty steps ([#9939](https://github.com/paritytech/parity-ethereum/pull/9939))
+    - Don't send empty step twice or empty step then block.
+    - Perform basic validation of locally sealed blocks.
+    - Don't include empty step twice.
+  - Prevent silent errors in daemon mode, closes [#9367](https://github.com/paritytech/parity-ethereum/issues/9367) ([#9946](https://github.com/paritytech/parity-ethereum/pull/9946))
+  - Fix a deadlock ([#9952](https://github.com/paritytech/parity-ethereum/pull/9952))
+    - Update informant:
+      - Decimal in Mgas/s
+      - Print every 5s (not randomly between 5s and 10s)
+    - Fix dead-lock in `blockchain.rs`
+    - Update locks ordering
+  - Fix light client informant while syncing ([#9932](https://github.com/paritytech/parity-ethereum/pull/9932))
+    - Add `is_idle` to LightSync to check importing status
+    - Use SyncStateWrapper to make sure is_idle gets updates
+    - Update is_major_import to use verified queue size as well
+    - Add comment for `is_idle`
+    - Add Debug to `SyncStateWrapper`
+    - `fn get` -> `fn into_inner`
+  -  Ci: rearrange pipeline by logic ([#9970](https://github.com/paritytech/parity-ethereum/pull/9970))
+    - Ci: rearrange pipeline by logic
+    - Ci: rename docs script
+  - Fix docker build ([#9971](https://github.com/paritytech/parity-ethereum/pull/9971))
+  - Deny unknown fields for chainspec ([#9972](https://github.com/paritytech/parity-ethereum/pull/9972))
+    - Add deny_unknown_fields to chainspec
+    - Add tests and fix existing one
+    - Remove serde_ignored dependency for chainspec
+    - Fix rpc test eth chain spec
+    - Fix starting_nonce_test spec
+  - Improve block and transaction propagation ([#9954](https://github.com/paritytech/parity-ethereum/pull/9954))
+    - Refactor sync to add priority tasks.
+    - Send priority tasks notifications.
+    - Propagate blocks, optimize transactions.
+    - Implement transaction propagation. Use sync_channel.
+    - Tone down info.
+    - Prevent deadlock by not waiting forever for sync lock.
+    - Fix lock order.
+    - Don't use sync_channel to prevent deadlocks.
+    - Fix tests.
+  - Fix unstable peers and slowness in sync ([#9967](https://github.com/paritytech/parity-ethereum/pull/9967))
+    - Don't sync all peers after each response
+    - Update formating
+    - Fix tests: add `continue_sync` to `Sync_step`
+    - Update ethcore/sync/src/chain/mod.rs
+    - Fix rpc middlewares
+  - Fix Cargo.lock
+  - Json: resolve merge in spec
+  - Rpc: fix starting_nonce_test
+  - Ci: allow nightl job to fail
+
+## Parity-Ethereum [v2.2.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.1) (2018-11-15)
+
+Parity-Ethereum 2.2.1-beta is the first v2.2 release, and might introduce features that break previous work flows, among others:
+
+- Prevent zero network ID ([#9763](https://github.com/paritytech/parity-ethereum/pull/9763)) and drop support for Olympic testnet ([#9801](https://github.com/paritytech/parity-ethereum/pull/9801)): The Olympic test net is dead for years and never used a chain ID but network ID zero. Parity Ethereum is now preventing the network ID to be zero, thus Olympic support is dropped. Make sure to chose positive non-zero network IDs in future.
+- Multithreaded snapshot creation ([#9239](https://github.com/paritytech/parity-ethereum/pull/9239)): adds a CLI argument `--snapshot-threads` which specifies the number of threads. This helps improving the performance of full nodes that wish to provide warp-snapshots for the network. The gain in performance comes with a slight drawback in increased snapshot size.
+- Expose config max-round-blocks-to-import ([#9439](https://github.com/paritytech/parity-ethereum/pull/9439)): Parity Ethereum imports blocks in rounds. If at the end of any round, the queue is not empty, we consider it to be _importing_ and won't notify pubsub. On large re-orgs (10+ blocks), this is possible. The default `max_round_blocks_to_import` is increased to 12 and configurable via the `--max-round-blocks-to-import` CLI flag. With unstable network conditions, it is advised to increase the number. This shouldn't have any noticeable performance impact unless the number is set to really large.
+- Increase Gas-floor-target and Gas Cap ([#9564](https://github.com/paritytech/parity-ethereum/pull/9564)): the default values for gas floor target are `8_000_000` and gas cap `10_000_000`, similar to Geth 1.8.15+.
+- Produce portable binaries ([#9725](https://github.com/paritytech/parity-ethereum/pull/9725)): we now produce portable binaries, but it may incur some performance degradation. For ultimate performance it's now better to compile Parity Ethereum from source with `PORTABLE=OFF` environment variable.
+- RPC: `parity_allTransactionHashes` ([#9745](https://github.com/paritytech/parity-ethereum/pull/9745)): Get all pending transactions from the queue with the high performant `parity_allTransactionHashes` RPC method.
+- Support `eth_chainId` RPC method ([#9783](https://github.com/paritytech/parity-ethereum/pull/9783)): implements EIP-695 to get the chainID via RPC.
+- AuRa: finalize blocks ([#9692](https://github.com/paritytech/parity-ethereum/pull/9692)): The AuRa engine was updated to emit ancestry actions to finalize blocks. The full client stores block finality in the database, the engine builds finality from an ancestry of `ExtendedHeader`; `is_epoch_end` was updated to take a vec of recently finalized headers; `is_epoch_end_light` was added which maintains the previous interface and is used by the light client since the client itself doesn't track finality.
+
+The full list of included changes:
+
+- Backport to parity 2.2.1 beta ([#9905](https://github.com/paritytech/parity-ethereum/pull/9905))
+  - Bump version to 2.2.1
+  - Fix: Intermittent failing CI due to addr in use ([#9885](https://github.com/paritytech/parity-ethereum/pull/9885))
+  - Fix Parity not closing on Ctrl-C ([#9886](https://github.com/paritytech/parity-ethereum/pull/9886))
+  - Fix json tracer overflow ([#9873](https://github.com/paritytech/parity-ethereum/pull/9873))
+  - Fix docker script ([#9854](https://github.com/paritytech/parity-ethereum/pull/9854))
+  - Add hardcoded headers for light client ([#9907](https://github.com/paritytech/parity-ethereum/pull/9907))
+  - Gitlab-ci: make android release build succeed ([#9743](https://github.com/paritytech/parity-ethereum/pull/9743))
+  - Allow to seal work on latest block ([#9876](https://github.com/paritytech/parity-ethereum/pull/9876))
+  - Remove rust-toolchain file ([#9906](https://github.com/paritytech/parity-ethereum/pull/9906))
+  - Light-fetch: Differentiate between out-of-gas/manual throw and use required gas from response on failure ([#9824](https://github.com/paritytech/parity-ethereum/pull/9824))
+  - Eip-712 implementation ([#9631](https://github.com/paritytech/parity-ethereum/pull/9631))
+  - Eip-191 implementation ([#9701](https://github.com/paritytech/parity-ethereum/pull/9701))
+  - Simplify cargo audit ([#9918](https://github.com/paritytech/parity-ethereum/pull/9918))
+  - Fix performance issue importing Kovan blocks ([#9914](https://github.com/paritytech/parity-ethereum/pull/9914))
+  - Ci: nuke the gitlab caches ([#9855](https://github.com/paritytech/parity-ethereum/pull/9855))
+- Backports to parity beta 2.2.0 ([#9820](https://github.com/paritytech/parity-ethereum/pull/9820))
+  - Ci: remove failing tests for android, windows, and macos ([#9788](https://github.com/paritytech/parity-ethereum/pull/9788))
+  - Implement NoProof for json tests and update tests reference ([#9814](https://github.com/paritytech/parity-ethereum/pull/9814))
+  - Move state root verification before gas used ([#9841](https://github.com/paritytech/parity-ethereum/pull/9841))
+  - Classic.json Bootnode Update ([#9828](https://github.com/paritytech/parity-ethereum/pull/9828))
+- Rpc: parity_allTransactionHashes ([#9745](https://github.com/paritytech/parity-ethereum/pull/9745))
+- Revert "prevent zero networkID ([#9763](https://github.com/paritytech/parity-ethereum/pull/9763))" ([#9815](https://github.com/paritytech/parity-ethereum/pull/9815))
+- Allow zero chain id in EIP155 signing process ([#9792](https://github.com/paritytech/parity-ethereum/pull/9792))
+- Add readiness check for docker container ([#9804](https://github.com/paritytech/parity-ethereum/pull/9804))
+- Insert dev account before unlocking ([#9813](https://github.com/paritytech/parity-ethereum/pull/9813))
+- Removed "rustup" & added new runner tag ([#9731](https://github.com/paritytech/parity-ethereum/pull/9731))
+- Expose config max-round-blocks-to-import ([#9439](https://github.com/paritytech/parity-ethereum/pull/9439))
+- Aura: finalize blocks ([#9692](https://github.com/paritytech/parity-ethereum/pull/9692))
+- Sync: retry different peer after empty subchain heads response ([#9753](https://github.com/paritytech/parity-ethereum/pull/9753))
+- Fix(light-rpc/parity) : Remove unused client ([#9802](https://github.com/paritytech/parity-ethereum/pull/9802))
+- Drops support for olympic testnet, closes [#9800](https://github.com/paritytech/parity-ethereum/issues/9800) ([#9801](https://github.com/paritytech/parity-ethereum/pull/9801))
+- Replace `tokio_core` with `tokio` (`ring` -> 0.13) ([#9657](https://github.com/paritytech/parity-ethereum/pull/9657))
+- Support eth_chainId RPC method ([#9783](https://github.com/paritytech/parity-ethereum/pull/9783))
+- Ethcore: bump ropsten forkblock checkpoint ([#9775](https://github.com/paritytech/parity-ethereum/pull/9775))
+- Docs: changelogs for 2.0.8 and 2.1.3 ([#9758](https://github.com/paritytech/parity-ethereum/pull/9758))
+- Prevent zero networkID ([#9763](https://github.com/paritytech/parity-ethereum/pull/9763))
+- Skip seal fields count check when --no-seal-check is used ([#9757](https://github.com/paritytech/parity-ethereum/pull/9757))
+- Aura: fix panic on extra_info with unsealed block ([#9755](https://github.com/paritytech/parity-ethereum/pull/9755))
+- Docs: update changelogs ([#9742](https://github.com/paritytech/parity-ethereum/pull/9742))
+- Removed extra assert in generation_session_is_removed_when_succeeded ([#9738](https://github.com/paritytech/parity-ethereum/pull/9738))
+- Make checkpoint_storage_at use plain loop instead of recursion ([#9734](https://github.com/paritytech/parity-ethereum/pull/9734))
+- Use signed 256-bit integer for sstore gas refund substate ([#9746](https://github.com/paritytech/parity-ethereum/pull/9746))
+- Heads ref not present for branches beta and stable ([#9741](https://github.com/paritytech/parity-ethereum/pull/9741))
+- Add Callisto support ([#9534](https://github.com/paritytech/parity-ethereum/pull/9534))
+- Add --force to cargo audit install script ([#9735](https://github.com/paritytech/parity-ethereum/pull/9735))
+- Remove unused expired value from Handshake ([#9732](https://github.com/paritytech/parity-ethereum/pull/9732))
+- Add hardcoded headers ([#9730](https://github.com/paritytech/parity-ethereum/pull/9730))
+- Produce portable binaries ([#9725](https://github.com/paritytech/parity-ethereum/pull/9725))
+- Gitlab ci: releasable_branches: change variables condition to schedule ([#9729](https://github.com/paritytech/parity-ethereum/pull/9729))
+- Update a few parity-common dependencies ([#9663](https://github.com/paritytech/parity-ethereum/pull/9663))
+- Hf in POA Core (2018-10-22) ([#9724](https://github.com/paritytech/parity-ethereum/pull/9724))
+- Schedule nightly builds ([#9717](https://github.com/paritytech/parity-ethereum/pull/9717))
+- Fix ancient blocks sync ([#9531](https://github.com/paritytech/parity-ethereum/pull/9531))
+- Ci: Skip docs job for nightly ([#9693](https://github.com/paritytech/parity-ethereum/pull/9693))
+- Fix (light/provider) : Make `read_only executions` read-only ([#9591](https://github.com/paritytech/parity-ethereum/pull/9591))
+- Ethcore: fix detection of major import ([#9552](https://github.com/paritytech/parity-ethereum/pull/9552))
+- Return 0 on error ([#9705](https://github.com/paritytech/parity-ethereum/pull/9705))
+- Ethcore: delay ropsten hardfork ([#9704](https://github.com/paritytech/parity-ethereum/pull/9704))
+- Make instantSeal engine backwards compatible, closes [#9696](https://github.com/paritytech/parity-ethereum/issues/9696) ([#9700](https://github.com/paritytech/parity-ethereum/pull/9700))
+- Implement CREATE2 gas changes and fix some potential overflowing ([#9694](https://github.com/paritytech/parity-ethereum/pull/9694))
+- Don't hash the init_code of CREATE. ([#9688](https://github.com/paritytech/parity-ethereum/pull/9688))
+- Ethcore: minor optimization of modexp by using LR exponentiation ([#9697](https://github.com/paritytech/parity-ethereum/pull/9697))
+- Removed redundant clone before each block import ([#9683](https://github.com/paritytech/parity-ethereum/pull/9683))
+- Add Foundation Bootnodes ([#9666](https://github.com/paritytech/parity-ethereum/pull/9666))
+- Docker: run as parity user ([#9689](https://github.com/paritytech/parity-ethereum/pull/9689))
+- Ethcore: mcip3 block reward contract ([#9605](https://github.com/paritytech/parity-ethereum/pull/9605))
+- Verify block syncing responses against requests ([#9670](https://github.com/paritytech/parity-ethereum/pull/9670))
+- Add a new RPC `parity_submitWorkDetail` similar `eth_submitWork` but return block hash ([#9404](https://github.com/paritytech/parity-ethereum/pull/9404))
+- Resumable EVM and heap-allocated callstack ([#9360](https://github.com/paritytech/parity-ethereum/pull/9360))
+- Update parity-wordlist library ([#9682](https://github.com/paritytech/parity-ethereum/pull/9682))
+- Ci: Remove unnecessary pipes ([#9681](https://github.com/paritytech/parity-ethereum/pull/9681))
+- Test.sh: use cargo --target for platforms other than linux, win or mac ([#9650](https://github.com/paritytech/parity-ethereum/pull/9650))
+- Ci: fix push script ([#9679](https://github.com/paritytech/parity-ethereum/pull/9679))
+- Hardfork the testnets ([#9562](https://github.com/paritytech/parity-ethereum/pull/9562))
+- Calculate sha3 instead of sha256 for push-release. ([#9673](https://github.com/paritytech/parity-ethereum/pull/9673))
+- Ethcore-io retries failed work steal ([#9651](https://github.com/paritytech/parity-ethereum/pull/9651))
+- Fix(light_fetch): avoid race with BlockNumber::Latest ([#9665](https://github.com/paritytech/parity-ethereum/pull/9665))
+- Test fix for windows cache name... ([#9658](https://github.com/paritytech/parity-ethereum/pull/9658))
+- Refactor(fetch) : light use only one `DNS` thread ([#9647](https://github.com/paritytech/parity-ethereum/pull/9647))
+- Ethereum libfuzzer integration small change ([#9547](https://github.com/paritytech/parity-ethereum/pull/9547))
+- Cli: remove reference to --no-ui in --unlock flag help ([#9616](https://github.com/paritytech/parity-ethereum/pull/9616))
+- Remove master from releasable branches ([#9655](https://github.com/paritytech/parity-ethereum/pull/9655))
+- Ethcore/VerificationQueue don't spawn up extra `worker-threads` when explictly specified not to ([#9620](https://github.com/paritytech/parity-ethereum/pull/9620))
+- Rpc: parity_getBlockReceipts ([#9527](https://github.com/paritytech/parity-ethereum/pull/9527))
+- Remove unused dependencies ([#9589](https://github.com/paritytech/parity-ethereum/pull/9589))
+- Ignore key_server_cluster randomly failing tests ([#9639](https://github.com/paritytech/parity-ethereum/pull/9639))
+- Ethcore: handle vm exception when estimating gas ([#9615](https://github.com/paritytech/parity-ethereum/pull/9615))
+- Fix bad-block reporting no reason ([#9638](https://github.com/paritytech/parity-ethereum/pull/9638))
+- Use static call and apparent value transfer for block reward contract code ([#9603](https://github.com/paritytech/parity-ethereum/pull/9603))
+- Hf in POA Sokol (2018-09-19) ([#9607](https://github.com/paritytech/parity-ethereum/pull/9607))
+- Bump smallvec to 0.6 in ethcore-light, ethstore and whisper ([#9588](https://github.com/paritytech/parity-ethereum/pull/9588))
+- Add constantinople conf to EvmTestClient. ([#9570](https://github.com/paritytech/parity-ethereum/pull/9570))
+- Fix(network): don't disconnect reserved peers ([#9608](https://github.com/paritytech/parity-ethereum/pull/9608))
+- Fix failing node-table tests on mac os, closes [#9632](https://github.com/paritytech/parity-ethereum/issues/9632) ([#9633](https://github.com/paritytech/parity-ethereum/pull/9633))
+- Update ropsten.json ([#9602](https://github.com/paritytech/parity-ethereum/pull/9602))
+- Simplify ethcore errors by removing BlockImportError ([#9593](https://github.com/paritytech/parity-ethereum/pull/9593))
+- Fix windows compilation, replaces [#9561](https://github.com/paritytech/parity-ethereum/issues/9561) ([#9621](https://github.com/paritytech/parity-ethereum/pull/9621))
+- Master: rpc-docs set github token ([#9610](https://github.com/paritytech/parity-ethereum/pull/9610))
+- Docs: add changelogs for 1.11.10, 1.11.11, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.1.0, and 2.1.1 ([#9554](https://github.com/paritytech/parity-ethereum/pull/9554))
+- Docs(rpc): annotate tag with the provided message ([#9601](https://github.com/paritytech/parity-ethereum/pull/9601))
+- Ci: fix regex roll_eyes ([#9597](https://github.com/paritytech/parity-ethereum/pull/9597))
+- Remove snapcraft clean ([#9585](https://github.com/paritytech/parity-ethereum/pull/9585))
+- Add snapcraft package image (master) ([#9584](https://github.com/paritytech/parity-ethereum/pull/9584))
+- Docs(rpc): push the branch along with tags ([#9578](https://github.com/paritytech/parity-ethereum/pull/9578))
+- Fix typo for jsonrpc-threads flag ([#9574](https://github.com/paritytech/parity-ethereum/pull/9574))
+- Fix informant compile ([#9571](https://github.com/paritytech/parity-ethereum/pull/9571))
+- Added ropsten bootnodes ([#9569](https://github.com/paritytech/parity-ethereum/pull/9569))
+- Increase Gas-floor-target and Gas Cap ([#9564](https://github.com/paritytech/parity-ethereum/pull/9564))
+- While working on the platform tests make them non-breaking ([#9563](https://github.com/paritytech/parity-ethereum/pull/9563))
+- Improve P2P discovery ([#9526](https://github.com/paritytech/parity-ethereum/pull/9526))
+- Move dockerfile for android build container to scripts repo ([#9560](https://github.com/paritytech/parity-ethereum/pull/9560))
+- Simultaneous platform tests WIP ([#9557](https://github.com/paritytech/parity-ethereum/pull/9557))
+- Update ethabi-derive, serde, serde_json, serde_derive, syn && quote ([#9553](https://github.com/paritytech/parity-ethereum/pull/9553))
+- Ci: fix rpc docs generation 2 ([#9550](https://github.com/paritytech/parity-ethereum/pull/9550))
+- Ci: always run build pipelines for win, mac, linux, and android ([#9537](https://github.com/paritytech/parity-ethereum/pull/9537))
+- Multithreaded snapshot creation ([#9239](https://github.com/paritytech/parity-ethereum/pull/9239))
+- New ethabi ([#9511](https://github.com/paritytech/parity-ethereum/pull/9511))
+- Remove initial token for WS. ([#9545](https://github.com/paritytech/parity-ethereum/pull/9545))
+- Net_version caches network_id to avoid redundant aquire of sync readlock ([#9544](https://github.com/paritytech/parity-ethereum/pull/9544))
+- Correct before_script for nightly build versions ([#9543](https://github.com/paritytech/parity-ethereum/pull/9543))
+- Deps: bump kvdb-rocksdb to 0.1.4 ([#9539](https://github.com/paritytech/parity-ethereum/pull/9539))
+- State: test when contract creation fails, old storage values should re-appear ([#9532](https://github.com/paritytech/parity-ethereum/pull/9532))
+- Allow dropping light client RPC query with no results ([#9318](https://github.com/paritytech/parity-ethereum/pull/9318))
+- Bump master to 2.2.0 ([#9517](https://github.com/paritytech/parity-ethereum/pull/9517))
+- Enable all Constantinople hard fork changes in constantinople_test.json ([#9505](https://github.com/paritytech/parity-ethereum/pull/9505))
+- [Light] Validate `account balance` before importing transactions ([#9417](https://github.com/paritytech/parity-ethereum/pull/9417))
+- In create memory calculation is the same for create2 because the additional parameter was popped before. ([#9522](https://github.com/paritytech/parity-ethereum/pull/9522))
+- Update patricia trie to 0.2.2 ([#9525](https://github.com/paritytech/parity-ethereum/pull/9525))
+- Replace hardcoded JSON with serde json! macro ([#9489](https://github.com/paritytech/parity-ethereum/pull/9489))
+- Fix typo in version string ([#9516](https://github.com/paritytech/parity-ethereum/pull/9516))
--- a/ethash/Cargo.toml
+++ b/ethash/Cargo.toml
@@ -10,11 +10,23 @@ ethereum-types = "0.4"
 keccak-hash = "0.1"
 log = "0.4"
 memmap = "0.6"
-parking_lot = "0.6"
+parking_lot = "0.7"
 primal = "0.2.3"

 [dev-dependencies]
+criterion = "0.2"
+rustc-hex = "1.0"
+serde_json = "1.0"
 tempdir = "0.3"

 [features]
-benches = []
+default = []
+bench = []
+
+[[bench]]
+name = "basic"
+harness = false
+
+[[bench]]
+name = "progpow"
+harness = false
--- a/Show More
+++ b/Show More