Merge branch 'master' into lightcli

2017-03-23 14:12:34 +01:00 · 2017-03-23 14:12:34 +01:00 · da837fa9d8
commit da837fa9d8
parent a1df49ef3e f5ea47a7b2
41 changed files with 754 additions and 430 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -52,6 +52,7 @@ dependencies = [
 "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 "toml 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@ -1750,7 +1751,7 @@ dependencies = [
 [[package]]
 name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/ethcore/js-precompiled.git#9651995aa0fa718b9b9b58f1c7281900643bdf8f"
+source = "git+https://github.com/ethcore/js-precompiled.git#a44b1cb29b80e4d3372ee47494499a61db7a8116"
 dependencies = [
 "parity-dapps-glue 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
--- a/Cargo.toml
+++ b/Cargo.toml
@ -24,6 +24,7 @@ serde = "0.9"
 serde_json = "0.9"
 app_dirs = "1.1.1"
 fdlimit = "0.1"
+ws2_32-sys = "0.2"
 hyper = { default-features = false, git = "https://github.com/paritytech/hyper" }
 ctrlc = { git = "https://github.com/paritytech/rust-ctrlc.git" }
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
--- a/ethcore/res/validator_multi.json
+++ b/ethcore/res/validator_multi.json
@ -0,0 +1,42 @@
+{
+	"name": "TestMutiValidator",
+	"engine": {
+		"basicAuthority": {
+			"params": {
+				"gasLimitBoundDivisor": "0x0400",
+				"durationLimit": "0x0d",
+				"validators": {
+					"multi": {
+						"0": { "list": ["0x82a978b3f5962a5b0957d9ee9eef472ee55b42f1"] },
+						"2": { "list": ["0x7d577a597b2742b498cb5cf0c26cdcd726d39e6e"] }
+					}
+				}
+			}
+		}
+	},
+	"params": {
+		"accountStartNonce": "0x0",
+		"maximumExtraDataSize": "0x20",
+		"minGasLimit": "0x1388",
+		"networkID" : "0x69"
+	},
+	"genesis": {
+		"seal": {
+			"generic": "0xc180"
+		},
+		"difficulty": "0x20000",
+		"author": "0x0000000000000000000000000000000000000000",
+		"timestamp": "0x00",
+		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
+		"extraData": "0x",
+		"gasLimit": "0x2fefd8"
+	},
+	"accounts": {
+		"0000000000000000000000000000000000000001": { "balance": "1", "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
+		"0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
+		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
+		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
+		"0x82a978b3f5962a5b0957d9ee9eef472ee55b42f1": { "balance": "99999999999999999999999" },
+		"0x7d577a597b2742b498cb5cf0c26cdcd726d39e6e": { "balance": "99999999999999999999999" }
+	}
+}
--- a/ethcore/src/account_provider/mod.rs
+++ b/ethcore/src/account_provider/mod.rs
@ -24,14 +24,16 @@ use std::fmt;
 use std::collections::{HashMap, HashSet};
 use std::time::{Instant, Duration};
 use util::{RwLock};
-use ethstore::{SimpleSecretStore, SecretStore, Error as SSError, EthStore, EthMultiStore,
-	random_string, SecretVaultRef, StoreAccountRef};
+use ethstore::{
+	SimpleSecretStore, SecretStore, Error as SSError, EthStore, EthMultiStore,
+	random_string, SecretVaultRef, StoreAccountRef,
+};
 use ethstore::dir::MemoryDirectory;
 use ethstore::ethkey::{Address, Message, Public, Secret, Random, Generator};
 use ethjson::misc::AccountMeta;
 use hardware_wallet::{Error as HardwareError, HardwareWalletManager, KeyPath};
 pub use ethstore::ethkey::Signature;
-pub use ethstore::{Derivation, IndexDerivation};
+pub use ethstore::{Derivation, IndexDerivation, KeyFile};

 /// Type of unlock.
 #[derive(Clone)]
@ -500,6 +502,11 @@ impl AccountProvider {
 		self.sstore.change_password(&self.sstore.account_ref(address)?, &password, &new_password)
 	}

+	/// Exports an account for given address.
+	pub fn export_account(&self, address: &Address, password: String) -> Result<KeyFile, Error> {
+		self.sstore.export_account(&self.sstore.account_ref(address)?, &password)
+	}
+
 	/// Helper method used for unlocking accounts.
 	fn unlock_account(&self, address: Address, password: String, unlock: Unlock) -> Result<(), Error> {
 		// verify password by signing dump message
--- a/ethcore/src/engines/authority_round.rs
+++ b/ethcore/src/engines/authority_round.rs
@ -82,7 +82,7 @@ pub struct AuthorityRound {
 	proposed: AtomicBool,
 	client: RwLock<Option<Weak<EngineClient>>>,
 	signer: EngineSigner,
-	validators: Box<ValidatorSet + Send + Sync>,
+	validators: Box<ValidatorSet>,
 	/// Is this Engine just for testing (prevents step calibration).
 	calibrate_step: bool,
 }
--- a/ethcore/src/engines/basic_authority.rs
+++ b/ethcore/src/engines/basic_authority.rs
@ -58,7 +58,7 @@ pub struct BasicAuthority {
 	gas_limit_bound_divisor: U256,
 	builtins: BTreeMap<Address, Builtin>,
 	signer: EngineSigner,
-	validators: Box<ValidatorSet + Send + Sync>,
+	validators: Box<ValidatorSet>,
 }

 impl BasicAuthority {
--- a/ethcore/src/engines/tendermint/mod.rs
+++ b/ethcore/src/engines/tendermint/mod.rs
@ -98,7 +98,7 @@ pub struct Tendermint {
 	/// Hash of the proposal parent block.
 	proposal_parent: RwLock<H256>,
 	/// Set used to determine the current validators.
-	validators: Box<ValidatorSet + Send + Sync>,
+	validators: Box<ValidatorSet>,
 }

 impl Tendermint {
--- a/ethcore/src/engines/validator_set/mod.rs
+++ b/ethcore/src/engines/validator_set/mod.rs
@ -19,6 +19,7 @@
 mod simple_list;
 mod safe_contract;
 mod contract;
+mod multi;

 use std::sync::Weak;
 use util::{Address, H256};
@ -27,23 +28,27 @@ use client::Client;
 use self::simple_list::SimpleList;
 use self::contract::ValidatorContract;
 use self::safe_contract::ValidatorSafeContract;
+use self::multi::Multi;

 /// Creates a validator set from spec.
-pub fn new_validator_set(spec: ValidatorSpec) -> Box<ValidatorSet + Send + Sync> {
+pub fn new_validator_set(spec: ValidatorSpec) -> Box<ValidatorSet> {
 	match spec {
 		ValidatorSpec::List(list) => Box::new(SimpleList::new(list.into_iter().map(Into::into).collect())),
 		ValidatorSpec::SafeContract(address) => Box::new(ValidatorSafeContract::new(address.into())),
 		ValidatorSpec::Contract(address) => Box::new(ValidatorContract::new(address.into())),
+		ValidatorSpec::Multi(sequence) => Box::new(
+			Multi::new(sequence.into_iter().map(|(block, set)| (block.into(), new_validator_set(set))).collect())
+		),
 	}
 }

-pub trait ValidatorSet {
+pub trait ValidatorSet: Send + Sync {
 	/// Checks if a given address is a validator.
-	fn contains(&self, bh: &H256, address: &Address) -> bool;
+	fn contains(&self, parent_block_hash: &H256, address: &Address) -> bool;
 	/// Draws an validator nonce modulo number of validators.
-	fn get(&self, bh: &H256, nonce: usize) -> Address;
+	fn get(&self, parent_block_hash: &H256, nonce: usize) -> Address;
 	/// Returns the current number of validators.
-	fn count(&self, bh: &H256) -> usize;
+	fn count(&self, parent_block_hash: &H256) -> usize;
 	/// Notifies about malicious behaviour.
 	fn report_malicious(&self, _validator: &Address) {}
 	/// Notifies about benign misbehaviour.
--- a/ethcore/src/engines/validator_set/multi.rs
+++ b/ethcore/src/engines/validator_set/multi.rs
@ -0,0 +1,158 @@
+// Copyright 2015-2017 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/>.
+
+/// Validator set changing at fork blocks.
+
+use std::collections::BTreeMap;
+use std::sync::Weak;
+use util::{H256, Address, RwLock};
+use ids::BlockId;
+use header::BlockNumber;
+use client::{Client, BlockChainClient};
+use super::ValidatorSet;
+
+type BlockNumberLookup = Box<Fn(&H256) -> Result<BlockNumber, String> + Send + Sync + 'static>;
+
+pub struct Multi {
+	sets: BTreeMap<BlockNumber, Box<ValidatorSet>>,
+	block_number: RwLock<BlockNumberLookup>,
+}
+
+impl Multi {
+	pub fn new(set_map: BTreeMap<BlockNumber, Box<ValidatorSet>>) -> Self {
+		assert!(set_map.get(&0u64).is_some(), "ValidatorSet has to be specified from block 0.");
+		Multi {
+			sets: set_map,
+			block_number: RwLock::new(Box::new(move |_| Err("No client!".into()))),
+		}
+	}
+
+	fn correct_set(&self, bh: &H256) -> Option<&Box<ValidatorSet>> {
+		match self
+			.block_number
+			.read()(bh)
+			.map(|parent_block| self
+					 .sets
+					 .iter()
+					 .rev()
+					 .find(|&(block, _)| *block <= parent_block + 1)
+					 .expect("constructor validation ensures that there is at least one validator set for block 0;
+									 block 0 is less than any uint;
+									 qed")
+				) {
+			Ok((block, set)) => {
+				trace!(target: "engine", "Multi ValidatorSet retrieved for block {}.", block);
+				Some(set)
+			},
+			Err(e) => {
+				debug!(target: "engine", "ValidatorSet could not be recovered: {}", e);
+				None
+			},
+		}
+	}
+}
+
+impl ValidatorSet for Multi {
+	fn contains(&self, bh: &H256, address: &Address) -> bool {
+		self.correct_set(bh).map_or(false, |set| set.contains(bh, address))
+	}
+
+	fn get(&self, bh: &H256, nonce: usize) -> Address {
+		self.correct_set(bh).map_or_else(Default::default, |set| set.get(bh, nonce))
+	}
+
+	fn count(&self, bh: &H256) -> usize {
+		self.correct_set(bh).map_or_else(usize::max_value, |set| set.count(bh))
+	}
+
+	fn report_malicious(&self, validator: &Address) {
+		for set in self.sets.values() {
+			set.report_malicious(validator);
+		}
+	}
+
+	fn report_benign(&self, validator: &Address) {
+		for set in self.sets.values() {
+			set.report_benign(validator);
+		}
+	}
+
+	fn register_contract(&self, client: Weak<Client>) {
+		for set in self.sets.values() {
+			set.register_contract(client.clone());
+		}
+		*self.block_number.write() = Box::new(move |hash| client
+			.upgrade()
+			.ok_or("No client!".into())
+			.and_then(|c| c.block_number(BlockId::Hash(*hash)).ok_or("Unknown block".into())));
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use util::*;
+	use types::ids::BlockId;
+	use spec::Spec;
+	use account_provider::AccountProvider;
+	use client::{BlockChainClient, EngineClient};
+	use ethkey::Secret;
+	use miner::MinerService;
+	use tests::helpers::{generate_dummy_client_with_spec_and_accounts, generate_dummy_client_with_spec_and_data};
+
+	#[test]
+	fn uses_current_set() {
+		::env_logger::init().unwrap();
+		let tap = Arc::new(AccountProvider::transient_provider());
+		let s0 = Secret::from_slice(&"0".sha3()).unwrap();
+		let v0 = tap.insert_account(s0.clone(), "").unwrap();
+		let v1 = tap.insert_account(Secret::from_slice(&"1".sha3()).unwrap(), "").unwrap();
+		let client = generate_dummy_client_with_spec_and_accounts(Spec::new_validator_multi, Some(tap));
+		client.engine().register_client(Arc::downgrade(&client));
+
+		// Make sure txs go through.
+		client.miner().set_gas_floor_target(1_000_000.into());
+
+		// Wrong signer for the first block.
+		client.miner().set_engine_signer(v1, "".into()).unwrap();
+		client.transact_contract(Default::default(), Default::default()).unwrap();
+		client.update_sealing();
+		assert_eq!(client.chain_info().best_block_number, 0);
+		// Right signer for the first block.
+		client.miner().set_engine_signer(v0, "".into()).unwrap();
+		client.update_sealing();
+		assert_eq!(client.chain_info().best_block_number, 1);
+		// This time v0 is wrong.
+		client.transact_contract(Default::default(), Default::default()).unwrap();
+		client.update_sealing();
+		assert_eq!(client.chain_info().best_block_number, 1);
+		client.miner().set_engine_signer(v1, "".into()).unwrap();
+		client.update_sealing();
+		assert_eq!(client.chain_info().best_block_number, 2);
+		// v1 is still good.
+		client.transact_contract(Default::default(), Default::default()).unwrap();
+		client.update_sealing();
+		assert_eq!(client.chain_info().best_block_number, 3);
+
+		// Check syncing.
+		let sync_client = generate_dummy_client_with_spec_and_data(Spec::new_validator_multi, 0, 0, &[]);
+		sync_client.engine().register_client(Arc::downgrade(&sync_client));
+		for i in 1..4 {
+			sync_client.import_block(client.block(BlockId::Number(i)).unwrap().into_inner()).unwrap();
+		}
+		sync_client.flush_queue();
+		assert_eq!(sync_client.chain_info().best_block_number, 3);
+	}
+}
--- a/ethcore/src/spec/spec.rs
+++ b/ethcore/src/spec/spec.rs
@ -360,6 +360,10 @@ impl Spec {
 	/// Account is marked with `reportBenign` it can be checked as disliked with "0xd8f2e0bf".
 	/// Validator can be removed with `reportMalicious`.
 	pub fn new_validator_contract() -> Self { load_bundled!("validator_contract") }
+
+	/// Create a new Spec with BasicAuthority which uses multiple validator sets changing with height.
+	/// Account with secrets "0".sha3() is the validator for block 1 and with "1".sha3() onwards.
+	pub fn new_validator_multi() -> Self { load_bundled!("validator_multi") }
 }

 #[cfg(test)]
--- a/ethstore/src/account/safe_account.rs
+++ b/ethstore/src/account/safe_account.rs
@ -19,14 +19,22 @@ use {json, Error, crypto};
 use account::Version;
 use super::crypto::Crypto;

+/// Account representation.
 #[derive(Debug, PartialEq, Clone)]
 pub struct SafeAccount {
+	/// Account ID
 	pub id: [u8; 16],
+	/// Account version
 	pub version: Version,
+	/// Account address
 	pub address: Address,
+	/// Account private key derivation definition.
 	pub crypto: Crypto,
+	/// Account filename
 	pub filename: Option<String>,
+	/// Account name
 	pub name: String,
+	/// Account metadata
 	pub meta: String,
 }

@ -44,6 +52,7 @@ impl Into<json::KeyFile> for SafeAccount {
 }

 impl SafeAccount {
+	/// Create a new account
 	pub fn create(
 		keypair: &KeyPair,
 		id: [u8; 16],
@ -114,21 +123,25 @@ impl SafeAccount {
 		})
 	}

+	/// Sign a message.
 	pub fn sign(&self, password: &str, message: &Message) -> Result<Signature, Error> {
 		let secret = self.crypto.secret(password)?;
 		sign(&secret, message).map_err(From::from)
 	}

+	/// Decrypt a message.
 	pub fn decrypt(&self, password: &str, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error> {
 		let secret = self.crypto.secret(password)?;
 		crypto::ecies::decrypt(&secret, shared_mac, message).map_err(From::from)
 	}

+	/// Derive public key.
 	pub fn public(&self, password: &str) -> Result<Public, Error> {
 		let secret = self.crypto.secret(password)?;
 		Ok(KeyPair::from_secret(secret)?.public().clone())
 	}

+	/// Change account's password.
 	pub fn change_password(&self, old_password: &str, new_password: &str, iterations: u32) -> Result<Self, Error> {
 		let secret = self.crypto.secret(old_password)?;
 		let result = SafeAccount {
@ -143,6 +156,7 @@ impl SafeAccount {
 		Ok(result)
 	}

+	/// Check if password matches the account.
 	pub fn check_password(&self, password: &str) -> bool {
 		self.crypto.secret(password).is_ok()
 	}
--- a/ethstore/src/bin/ethstore.rs
+++ b/ethstore/src/bin/ethstore.rs
@ -22,7 +22,7 @@ use std::{env, process, fs};
 use std::io::Read;
 use docopt::Docopt;
 use ethstore::ethkey::Address;
-use ethstore::dir::{KeyDirectory, ParityDirectory, RootDiskDirectory, GethDirectory, DirectoryType};
+use ethstore::dir::{paths, KeyDirectory, RootDiskDirectory};
 use ethstore::{EthStore, SimpleSecretStore, SecretStore, import_accounts, Error, PresaleWallet,
 	SecretVaultRef, StoreAccountRef};

@ -49,14 +49,14 @@ Usage:
 Options:
    -h, --help               Display this message and exit.
    --dir DIR                Specify the secret store directory. It may be either
-                             parity, parity-test, geth, geth-test
+                             parity, parity-(chain), geth, geth-test
                             or a path [default: parity].
    --vault VAULT            Specify vault to use in this operation.
    --vault-pwd VAULTPWD     Specify vault password to use in this operation. Please note
                             that this option is required when vault option is set.
                             Otherwise it is ignored.
    --src DIR                Specify import source. It may be either
-                             parity, parity-test, get, geth-test
+                             parity, parity-(chain), get, geth-test
                             or a path [default: geth].

 Commands:
@ -116,10 +116,13 @@ fn main() {

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

@ -254,4 +257,3 @@ fn execute<S, I>(command: I) -> Result<String, Error> where I: IntoIterator<Item
 		Ok(format!("{}", USAGE))
 	}
 }
-
--- a/ethstore/src/dir/geth.rs
+++ b/ethstore/src/dir/geth.rs
@ -1,102 +0,0 @@
-// Copyright 2015-2017 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::env;
-use std::path::PathBuf;
-use {SafeAccount, Error};
-use super::{KeyDirectory, RootDiskDirectory, DirectoryType};
-
-#[cfg(target_os = "macos")]
-fn geth_dir_path() -> PathBuf {
-	let mut home = env::home_dir().expect("Failed to get home dir");
-	home.push("Library");
-	home.push("Ethereum");
-	home
-}
-
-#[cfg(windows)]
-/// Default path for ethereum installation on Windows
-pub fn geth_dir_path() -> PathBuf {
-	let mut home = env::home_dir().expect("Failed to get home dir");
-	home.push("AppData");
-	home.push("Roaming");
-	home.push("Ethereum");
-	home
-}
-
-#[cfg(not(any(target_os = "macos", windows)))]
-/// Default path for ethereum installation on posix system which is not Mac OS
-pub fn geth_dir_path() -> PathBuf {
-	let mut home = env::home_dir().expect("Failed to get home dir");
-	home.push(".ethereum");
-	home
-}
-
-fn geth_keystore(t: DirectoryType) -> PathBuf {
-	let mut dir = geth_dir_path();
-	match t {
-		DirectoryType::Testnet => {
-			dir.push("testnet");
-			dir.push("keystore");
-		},
-		DirectoryType::Main => {
-			dir.push("keystore");
-		}
-	}
-	dir
-}
-
-pub struct GethDirectory {
-	dir: RootDiskDirectory,
-}
-
-impl GethDirectory {
-	pub fn create(t: DirectoryType) -> Result<Self, Error> {
-		let result = GethDirectory {
-			dir: RootDiskDirectory::create(geth_keystore(t))?,
-		};
-
-		Ok(result)
-	}
-
-	pub fn open(t: DirectoryType) -> Self {
-		GethDirectory {
-			dir: RootDiskDirectory::at(geth_keystore(t)),
-		}
-	}
-}
-
-impl KeyDirectory for GethDirectory {
-	fn load(&self) -> Result<Vec<SafeAccount>, Error> {
-		self.dir.load()
-	}
-
-	fn insert(&self, account: SafeAccount) -> Result<SafeAccount, Error> {
-		self.dir.insert(account)
-	}
-
-	fn update(&self, account: SafeAccount) -> Result<SafeAccount, Error> {
-		self.dir.update(account)
-	}
-
-	fn remove(&self, account: &SafeAccount) -> Result<(), Error> {
-		self.dir.remove(account)
-	}
-
-	fn unique_repr(&self) -> Result<u64, Error> {
-		self.dir.unique_repr()
-	}
-}
--- a/ethstore/src/dir/memory.rs
+++ b/ethstore/src/dir/memory.rs
@ -22,6 +22,7 @@ use ethkey::Address;
 use {SafeAccount, Error};
 use super::KeyDirectory;

+/// Accounts in-memory storage.
 #[derive(Default)]
 pub struct MemoryDirectory {
 	accounts: RwLock<HashMap<Address, Vec<SafeAccount>>>,
--- a/ethstore/src/dir/mod.rs
+++ b/ethstore/src/dir/mod.rs
@ -14,19 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.

+//! Accounts Directory
+
 use std::path::{PathBuf};
 use {SafeAccount, Error};

 mod disk;
-mod geth;
 mod memory;
-mod parity;
 mod vault;
-
-pub enum DirectoryType {
-	Testnet,
-	Main,
-}
+pub mod paths;

 /// `VaultKeyDirectory::set_key` error
 #[derive(Debug)]
@ -54,7 +50,7 @@ pub trait KeyDirectory: Send + Sync {
 	fn load(&self) -> Result<Vec<SafeAccount>, Error>;
 	/// Insert new key to directory
 	fn insert(&self, account: SafeAccount) -> Result<SafeAccount, Error>;
-	//// Update key in directory
+	/// Update key in the directory
 	fn update(&self, account: SafeAccount) -> Result<SafeAccount, Error>;
 	/// Remove key from directory
 	fn remove(&self, account: &SafeAccount) -> Result<(), Error>;
@ -95,9 +91,7 @@ pub trait VaultKeyDirectory: KeyDirectory {
 }

 pub use self::disk::RootDiskDirectory;
-pub use self::geth::GethDirectory;
 pub use self::memory::MemoryDirectory;
-pub use self::parity::ParityDirectory;
 pub use self::vault::VaultDiskDirectory;

 impl VaultKey {
--- a/ethstore/src/dir/parity.rs
+++ b/ethstore/src/dir/parity.rs
@ -1,81 +0,0 @@
-// Copyright 2015-2017 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::env;
-use std::path::PathBuf;
-use {SafeAccount, Error};
-use super::{KeyDirectory, RootDiskDirectory, DirectoryType};
-
-fn parity_dir_path() -> PathBuf {
-	let mut home = env::home_dir().expect("Failed to get home dir");
-	home.push(".parity");
-	home
-}
-
-fn parity_keystore(t: DirectoryType) -> PathBuf {
-	let mut dir = parity_dir_path();
-	match t {
-		DirectoryType::Testnet => {
-			dir.push("testnet_keys");
-		},
-		DirectoryType::Main => {
-			dir.push("keys");
-		}
-	}
-	dir
-}
-
-pub struct ParityDirectory {
-	dir: RootDiskDirectory,
-}
-
-impl ParityDirectory {
-	pub fn create(t: DirectoryType) -> Result<Self, Error> {
-		let result = ParityDirectory {
-			dir: RootDiskDirectory::create(parity_keystore(t))?,
-		};
-
-		Ok(result)
-	}
-
-	pub fn open(t: DirectoryType) -> Self {
-		ParityDirectory {
-			dir: RootDiskDirectory::at(parity_keystore(t)),
-		}
-	}
-}
-
-impl KeyDirectory for ParityDirectory {
-	fn load(&self) -> Result<Vec<SafeAccount>, Error> {
-		self.dir.load()
-	}
-
-	fn insert(&self, account: SafeAccount) -> Result<SafeAccount, Error> {
-		self.dir.insert(account)
-	}
-
-	fn update(&self, account: SafeAccount) -> Result<SafeAccount, Error> {
-		self.dir.update(account)
-	}
-
-	fn remove(&self, account: &SafeAccount) -> Result<(), Error> {
-		self.dir.remove(account)
-	}
-
-	fn unique_repr(&self) -> Result<u64, Error> {
-		self.dir.unique_repr()
-	}
-}
--- a/ethstore/src/dir/paths.rs
+++ b/ethstore/src/dir/paths.rs
@ -0,0 +1,96 @@
+// Copyright 2015-2017 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/>.
+
+//! Common tools paths.
+
+use std::env;
+use std::path::PathBuf;
+
+fn home() -> PathBuf {
+	env::home_dir().expect("Failed to get home dir")
+}
+
+/// Geth path
+pub fn geth(testnet: bool) -> PathBuf {
+	let mut base = geth_base();
+	if testnet {
+		base.push("testnet");
+	}
+	base.push("keystore");
+	base
+}
+
+/// Parity path for specific chain
+pub fn parity(chain: &str) -> PathBuf {
+	let mut base = parity_base();
+	base.push(chain);
+	base
+}
+
+#[cfg(target_os = "macos")]
+fn parity_base() -> PathBuf {
+	let mut home = home();
+	home.push("Library");
+	home.push("Application Support");
+	home.push("io.parity.ethereum");
+	home.push("keys");
+	home
+}
+
+#[cfg(windows)]
+fn parity_base() -> PathBuf {
+	let mut home = home();
+	home.push("AppData");
+	home.push("Roaming");
+	home.push("Parity");
+	home.push("Ethereum");
+	home.push("keys");
+	home
+}
+
+#[cfg(not(any(target_os = "macos", windows)))]
+fn parity_base() -> PathBuf {
+	let mut home = home();
+	home.push(".local");
+	home.push("share");
+	home.push("io.parity.ethereum");
+	home.push("keys");
+	home
+}
+
+#[cfg(target_os = "macos")]
+fn geth_base() -> PathBuf {
+	let mut home = home();
+	home.push("Library");
+	home.push("Ethereum");
+	home
+}
+
+#[cfg(windows)]
+fn geth_base() -> PathBuf {
+	let mut home = home();
+	home.push("AppData");
+	home.push("Roaming");
+	home.push("Ethereum");
+	home
+}
+
+#[cfg(not(any(target_os = "macos", windows)))]
+fn geth_base() -> PathBuf {
+	let mut home = home();
+	home.push(".ethereum");
+	home
+}
--- a/ethstore/src/error.rs
+++ b/ethstore/src/error.rs
@ -20,23 +20,40 @@ use ethkey::Error as EthKeyError;
 use crypto::Error as EthCryptoError;
 use ethkey::DerivationError;

+/// Account-related errors.
 #[derive(Debug)]
 pub enum Error {
+	/// IO error
 	Io(IoError),
+	/// Invalid Password
 	InvalidPassword,
+	/// Account's secret is invalid.
 	InvalidSecret,
+	/// Invalid Vault Crypto meta.
 	InvalidCryptoMeta,
+	/// Invalid Account.
 	InvalidAccount,
+	/// Invalid Message.
 	InvalidMessage,
+	/// Invalid Key File
 	InvalidKeyFile(String),
+	/// Vaults are not supported.
 	VaultsAreNotSupported,
+	/// Unsupported vault
 	UnsupportedVault,
+	/// Invalid vault name
 	InvalidVaultName,
+	/// Vault not found
 	VaultNotFound,
+	/// Account creation failed.
 	CreationFailed,
+	/// `EthKey` error
 	EthKey(EthKeyError),
+	/// `EthCrypto` error
 	EthCrypto(EthCryptoError),
+	/// Derivation error
 	Derivation(DerivationError),
+	/// Custom error
 	Custom(String),
 }

--- a/ethstore/src/ethstore.rs
+++ b/ethstore/src/ethstore.rs
@ -25,18 +25,21 @@ use ethkey::{self, Signature, Address, Message, Secret, Public, KeyPair, Extende
 use dir::{KeyDirectory, VaultKeyDirectory, VaultKey, SetKeyError};
 use account::SafeAccount;
 use presale::PresaleWallet;
-use json::{self, Uuid};
+use json::{self, Uuid, OpaqueKeyFile};
 use {import, Error, SimpleSecretStore, SecretStore, SecretVaultRef, StoreAccountRef, Derivation};

+/// Accounts store.
 pub struct EthStore {
 	store: EthMultiStore,
 }

 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)
 	}

+	/// 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> {
 		Ok(EthStore {
 			store: EthMultiStore::open_with_iterations(directory, iterations)?,
@ -44,7 +47,7 @@ impl EthStore {
 	}

 	fn get(&self, account: &StoreAccountRef) -> Result<SafeAccount, Error> {
-		let mut accounts = self.store.get(account)?.into_iter();
+		let mut accounts = self.store.get_accounts(account)?.into_iter();
 		accounts.next().ok_or(Error::InvalidAccount)
 	}
 }
@ -76,6 +79,10 @@ impl SimpleSecretStore for EthStore {
 		self.store.change_password(account, old_password, new_password)
 	}

+	fn export_account(&self, account: &StoreAccountRef, password: &str) -> Result<OpaqueKeyFile, Error> {
+		self.store.export_account(account, password)
+	}
+
 	fn remove_account(&self, account: &StoreAccountRef, password: &str) -> Result<(), Error> {
 		self.store.remove_account(account, password)
 	}
@ -234,11 +241,12 @@ pub struct EthMultiStore {
 }

 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)
 	}

+	/// 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> {
 		let store = EthMultiStore {
 			dir: directory,
@ -287,7 +295,7 @@ impl EthMultiStore {
 		Ok(())
 	}

-	fn get(&self, account: &StoreAccountRef) -> Result<Vec<SafeAccount>, Error> {
+	fn get_accounts(&self, account: &StoreAccountRef) -> Result<Vec<SafeAccount>, Error> {
 		{
 			let cache = self.cache.read();
 			if let Some(accounts) = cache.get(account) {
@ -307,6 +315,15 @@ impl EthMultiStore {
 		}
 	}

+	fn get_matching(&self, account: &StoreAccountRef, password: &str) -> Result<Vec<SafeAccount>, Error> {
+		let accounts = self.get_accounts(account)?;
+
+		Ok(accounts.into_iter()
+			.filter(|acc| acc.check_password(password))
+			.collect()
+		)
+	}
+
 	fn import(&self, vault: SecretVaultRef, account: SafeAccount) -> Result<StoreAccountRef, Error> {
 		// save to file
 		let account = match vault {
@ -398,12 +415,8 @@ impl SimpleSecretStore for EthMultiStore {
 	fn insert_derived(&self, vault: SecretVaultRef, account_ref: &StoreAccountRef, password: &str, derivation: Derivation)
 		-> Result<StoreAccountRef, Error>
 	{
-		let accounts = self.get(account_ref)?;
+		let accounts = self.get_matching(account_ref, password)?;
 		for account in accounts {
-			// Skip if password is invalid
-			if !account.check_password(password) {
-				continue;
-			}
 			let extended = self.generate(account.crypto.secret(password)?, derivation)?;
 			return self.insert_account(vault, extended.secret().as_raw().clone(), password);
 		}
@ -413,14 +426,9 @@ impl SimpleSecretStore for EthMultiStore {
 	fn generate_derived(&self, account_ref: &StoreAccountRef, password: &str, derivation: Derivation)
 	    -> Result<Address, Error>
 	{
-		let accounts = self.get(&account_ref)?;
+		let accounts = self.get_matching(&account_ref, password)?;
 		for account in accounts {
-			// Skip if password is invalid
-			if !account.check_password(password) {
-				continue;
-			}
 			let extended = self.generate(account.crypto.secret(password)?, derivation)?;
-
 			return Ok(ethkey::public_to_address(extended.public().public()));
 		}
 		Err(Error::InvalidPassword)
@ -429,18 +437,13 @@ impl SimpleSecretStore for EthMultiStore {
 	fn sign_derived(&self, account_ref: &StoreAccountRef, password: &str, derivation: Derivation, message: &Message)
 		-> Result<Signature, Error>
 	{
-		let accounts = self.get(&account_ref)?;
+		let accounts = self.get_matching(&account_ref, password)?;
 		for account in accounts {
-			// Skip if password is invalid
-			if !account.check_password(password) {
-				continue;
-			}
 			let extended = self.generate(account.crypto.secret(password)?, derivation)?;
 			let secret = extended.secret().as_raw();
 			return Ok(ethkey::sign(&secret, message)?)
 		}
 		Err(Error::InvalidPassword)
-
 	}

 	fn account_ref(&self, address: &Address) -> Result<StoreAccountRef, Error> {
@ -457,48 +460,48 @@ impl SimpleSecretStore for EthMultiStore {
 	}

 	fn remove_account(&self, account_ref: &StoreAccountRef, password: &str) -> Result<(), Error> {
-		let accounts = self.get(account_ref)?;
+		let accounts = self.get_matching(account_ref, password)?;

 		for account in accounts {
-			// Skip if password is invalid
-			if !account.check_password(password) {
-				continue;
-			}
-
 			return self.remove_safe_account(account_ref, &account);
 		}
+
 		Err(Error::InvalidPassword)
 	}

 	fn change_password(&self, account_ref: &StoreAccountRef, old_password: &str, new_password: &str) -> Result<(), Error> {
-		let accounts = self.get(account_ref)?;
+		let accounts = self.get_matching(account_ref, old_password)?;
+
+		if accounts.is_empty() {
+			return Err(Error::InvalidPassword);
+		}

 		for account in accounts {
 			// Change password
 			let new_account = account.change_password(old_password, new_password, self.iterations)?;
 			self.update(account_ref, account, new_account)?;
 		}
+
 		Ok(())
 	}

-	fn sign(&self, account: &StoreAccountRef, password: &str, message: &Message) -> Result<Signature, Error> {
-		let accounts = self.get(account)?;
-		for account in accounts {
-			if account.check_password(password) {
-				return account.sign(password, message);
-			}
+	fn export_account(&self, account_ref: &StoreAccountRef, password: &str) -> Result<OpaqueKeyFile, Error> {
+		self.get_matching(account_ref, password)?.into_iter().nth(0).map(Into::into).ok_or(Error::InvalidPassword)
 	}

+	fn sign(&self, account: &StoreAccountRef, password: &str, message: &Message) -> Result<Signature, Error> {
+		let accounts = self.get_matching(account, password)?;
+		for account in accounts {
+			return account.sign(password, message);
+		}
 		Err(Error::InvalidPassword)
 	}

 	fn decrypt(&self, account: &StoreAccountRef, password: &str, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error> {
-		let accounts = self.get(account)?;
+		let accounts = self.get_matching(account, password)?;
 		for account in accounts {
-			if account.check_password(password) {
 			return account.decrypt(password, shared_mac, message);
 		}
-		}
 		Err(Error::InvalidPassword)
 	}

@ -586,7 +589,7 @@ impl SimpleSecretStore for EthMultiStore {
 			return Ok(account_ref);
 		}

-		let account = self.get(&account_ref)?.into_iter().nth(0).ok_or(Error::InvalidAccount)?;
+		let account = self.get_accounts(&account_ref)?.into_iter().nth(0).ok_or(Error::InvalidAccount)?;
 		let new_account_ref = self.import(vault, account.clone())?;
 		self.remove_safe_account(&account_ref, &account)?;
 		self.reload_accounts()?;
@ -1032,4 +1035,18 @@ mod tests {
 		// then
 		assert_eq!(store.get_vault_meta(name).unwrap(), "OldMeta".to_owned());
 	}
+
+	#[test]
+	fn should_export_account() {
+		// given
+		let store = store();
+		let keypair = keypair();
+		let address = store.insert_account(SecretVaultRef::Root, keypair.secret().clone(), "test").unwrap();
+
+		// when
+		let exported = store.export_account(&address, "test");
+
+		// then
+		assert!(exported.is_ok(), "Should export single account: {:?}", exported);
+	}
 }
--- a/ethstore/src/import.rs
+++ b/ethstore/src/import.rs
@ -16,9 +16,10 @@

 use std::collections::HashSet;
 use ethkey::Address;
-use dir::{GethDirectory, KeyDirectory, DirectoryType};
+use dir::{paths, KeyDirectory, RootDiskDirectory};
 use 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<_>>();
@ -34,13 +35,7 @@ pub fn import_accounts(src: &KeyDirectory, dst: &KeyDirectory) -> Result<Vec<Add

 /// Provide a `HashSet` of all accounts available for import from the Geth keystore.
 pub fn read_geth_accounts(testnet: bool) -> Vec<Address> {
-	let t = if testnet {
-		DirectoryType::Testnet
-	} else {
-		DirectoryType::Main
-	};
-
-	GethDirectory::open(t)
+	RootDiskDirectory::at(paths::geth(testnet))
 		.load()
 		.map(|d| d.into_iter().map(|a| a.address).collect())
 		.unwrap_or_else(|_| Vec::new())
@ -48,13 +43,7 @@ pub fn read_geth_accounts(testnet: bool) -> Vec<Address> {

 /// Import specific `desired` accounts from the Geth keystore into `dst`.
 pub fn import_geth_accounts(dst: &KeyDirectory, desired: HashSet<Address>, testnet: bool) -> Result<Vec<Address>, Error> {
-	let t = if testnet {
-		DirectoryType::Testnet
-	} else {
-		DirectoryType::Main
-	};
-
-	let src = GethDirectory::open(t);
+	let src = RootDiskDirectory::at(paths::geth(testnet));
 	let accounts = src.load()?;
 	let existing_accounts = dst.load()?.into_iter().map(|a| a.address).collect::<HashSet<_>>();

--- a/ethstore/src/json/key_file.rs
+++ b/ethstore/src/json/key_file.rs
@ -16,11 +16,31 @@

 use std::fmt;
 use std::io::{Read, Write};
-use serde::{Deserialize, Deserializer};
+use serde::{Serialize, Serializer, Deserialize, Deserializer};
 use serde::de::{Error, Visitor, MapVisitor};
 use serde_json;
 use super::{Uuid, Version, Crypto, H160};

+/// Public opaque type representing serializable `KeyFile`.
+#[derive(Debug, PartialEq)]
+pub struct OpaqueKeyFile {
+	key_file: KeyFile
+}
+
+impl Serialize for OpaqueKeyFile {
+	fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
+		S: Serializer,
+	{
+		self.key_file.serialize(serializer)
+	}
+}
+
+impl<T> From<T> for OpaqueKeyFile where T: Into<KeyFile> {
+	fn from(val: T) -> Self {
+		OpaqueKeyFile { key_file: val.into() }
+	}
+}
+
 #[derive(Debug, PartialEq, Serialize)]
 pub struct KeyFile {
 	pub id: Uuid,
--- a/ethstore/src/json/mod.rs
+++ b/ethstore/src/json/mod.rs
@ -36,7 +36,7 @@ pub use self::error::Error;
 pub use self::hash::{H128, H160, H256};
 pub use self::id::Uuid;
 pub use self::kdf::{Kdf, KdfSer, Prf, Pbkdf2, Scrypt, KdfSerParams};
-pub use self::key_file::KeyFile;
+pub use self::key_file::{KeyFile, OpaqueKeyFile};
 pub use self::presale::{PresaleWallet, Encseed};
 pub use self::vault_file::VaultFile;
 pub use self::vault_key_file::{VaultKeyFile, VaultKeyMeta, insert_vault_name_to_json_meta, remove_vault_name_from_json_meta};
--- a/ethstore/src/lib.rs
+++ b/ethstore/src/lib.rs
@ -14,6 +14,11 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.

+//! Ethereum key-management.
+
+
+#![warn(missing_docs)]
+
 extern crate libc;
 extern crate itertools;
 extern crate smallvec;
@ -52,10 +57,11 @@ mod presale;
 mod random;
 mod secret_store;

-pub use self::account::{SafeAccount};
+pub use self::account::SafeAccount;
 pub use self::error::Error;
 pub use self::ethstore::{EthStore, EthMultiStore};
 pub use self::import::{import_accounts, read_geth_accounts};
+pub use self::json::OpaqueKeyFile as KeyFile;
 pub use self::presale::PresaleWallet;
 pub use self::secret_store::{
 	SecretVaultRef, StoreAccountRef, SimpleSecretStore, SecretStore,
--- a/ethstore/src/presale.rs
+++ b/ethstore/src/presale.rs
@ -8,6 +8,7 @@ use ethkey::{Address, Secret, KeyPair};
 use crypto::Keccak256;
 use {crypto, Error};

+/// Pre-sale wallet.
 pub struct PresaleWallet {
 	iv: [u8; 16],
 	ciphertext: Vec<u8>,
@ -31,6 +32,7 @@ impl From<json::PresaleWallet> for PresaleWallet {
 }

 impl PresaleWallet {
+	/// Open a pre-sale wallet.
 	pub fn open<P>(path: P) -> Result<Self, Error> where P: AsRef<Path> {
 		let file = fs::File::open(path)?;
 		let presale = json::PresaleWallet::load(file)
@ -38,6 +40,7 @@ impl PresaleWallet {
 		Ok(PresaleWallet::from(presale))
 	}

+	/// Decrypt the wallet.
 	pub fn decrypt(&self, password: &str) -> Result<KeyPair, Error> {
 		let mut h_mac = Hmac::new(Sha256::new(), password.as_bytes());
 		let mut derived_key = vec![0u8; 16];
--- a/ethstore/src/secret_store.rs
+++ b/ethstore/src/secret_store.rs
@ -18,7 +18,7 @@ use std::hash::{Hash, Hasher};
 use std::path::PathBuf;
 use ethkey::{Address, Message, Signature, Secret, Public};
 use Error;
-use json::Uuid;
+use json::{Uuid, OpaqueKeyFile};
 use util::H256;

 /// Key directory reference
@ -39,16 +39,28 @@ pub struct StoreAccountRef {
 	pub address: Address,
 }

+/// Simple Secret Store API
 pub trait SimpleSecretStore: Send + Sync {
+	/// Inserts new accounts to the store (or vault) with given password.
 	fn insert_account(&self, vault: SecretVaultRef, secret: Secret, password: &str) -> Result<StoreAccountRef, Error>;
+	/// Inserts new derived account to the store (or vault) with given password.
 	fn insert_derived(&self, vault: SecretVaultRef, account_ref: &StoreAccountRef, password: &str, derivation: Derivation) -> Result<StoreAccountRef, Error>;
+	/// Changes accounts password.
 	fn change_password(&self, account: &StoreAccountRef, old_password: &str, new_password: &str) -> Result<(), Error>;
+	/// Exports key details for account.
+	fn export_account(&self, account: &StoreAccountRef, password: &str) -> Result<OpaqueKeyFile, Error>;
+	/// Entirely removes account from the store and underlying storage.
 	fn remove_account(&self, account: &StoreAccountRef, password: &str) -> Result<(), Error>;
+	/// Generates new derived account.
 	fn generate_derived(&self, account_ref: &StoreAccountRef, password: &str, derivation: Derivation) -> Result<Address, Error>;
+	/// Sign a message with given account.
 	fn sign(&self, account: &StoreAccountRef, password: &str, message: &Message) -> Result<Signature, Error>;
+	/// Sign a message with derived account.
 	fn sign_derived(&self, account_ref: &StoreAccountRef, password: &str, derivation: Derivation, message: &Message) -> Result<Signature, Error>;
+	/// Decrypt a messages with given account.
 	fn decrypt(&self, account: &StoreAccountRef, password: &str, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error>;

+	/// Returns all accounts in this secret store.
 	fn accounts(&self) -> Result<Vec<StoreAccountRef>, Error>;
 	/// Get reference to some account with given address.
 	/// This method could be removed if we will guarantee that there is max(1) account for given address.
@ -74,23 +86,37 @@ pub trait SimpleSecretStore: Send + Sync {
 	fn set_vault_meta(&self, name: &str, meta: &str) -> Result<(), Error>;
 }

+/// Secret Store API
 pub trait SecretStore: SimpleSecretStore {
+	/// Imports presale wallet
 	fn import_presale(&self, vault: SecretVaultRef, json: &[u8], password: &str) -> Result<StoreAccountRef, Error>;
+	/// Imports existing JSON wallet
 	fn import_wallet(&self, vault: SecretVaultRef, json: &[u8], password: &str) -> Result<StoreAccountRef, Error>;
+	/// Copies account between stores and vaults.
 	fn copy_account(&self, new_store: &SimpleSecretStore, new_vault: SecretVaultRef, account: &StoreAccountRef, password: &str, new_password: &str) -> Result<(), Error>;
+	/// Checks if password matches given account.
 	fn test_password(&self, account: &StoreAccountRef, password: &str) -> Result<bool, Error>;

+	/// Returns a public key for given account.
 	fn public(&self, account: &StoreAccountRef, password: &str) -> Result<Public, Error>;

+	/// Returns uuid of an account.
 	fn uuid(&self, account: &StoreAccountRef) -> Result<Uuid, Error>;
+	/// Returns account's name.
 	fn name(&self, account: &StoreAccountRef) -> Result<String, Error>;
+	/// Returns account's metadata.
 	fn meta(&self, account: &StoreAccountRef) -> Result<String, Error>;

+	/// Modifies account metadata.
 	fn set_name(&self, account: &StoreAccountRef, name: String) -> Result<(), Error>;
+	/// Modifies account name.
 	fn set_meta(&self, account: &StoreAccountRef, meta: String) -> Result<(), Error>;

+	/// Returns local path of the store.
 	fn local_path(&self) -> PathBuf;
+	/// Lists all found geth accounts.
 	fn list_geth_accounts(&self, testnet: bool) -> Vec<Address>;
+	/// Imports geth accounts to the store/vault.
 	fn import_geth_accounts(&self, vault: SecretVaultRef, desired: Vec<Address>, testnet: bool) -> Result<Vec<StoreAccountRef>, Error>;
 }

--- a/js/package.json
+++ b/js/package.json
@ -1,6 +1,6 @@
 {
  "name": "parity.js",
-  "version": "1.7.26",
+  "version": "1.7.29",
  "main": "release/index.js",
  "jsnext:main": "src/index.js",
  "author": "Parity Team <admin@parity.io>",
@ -48,8 +48,10 @@
    "lint": "npm run lint:css && npm run lint:js",
    "lint:cached": "npm run lint:css && npm run lint:js:cached",
    "lint:css": "stylelint ./src/**/*.css",
+    "lint:fix": "npm run lint:js:fix",
    "lint:js": "eslint --ignore-path .gitignore ./src/",
    "lint:js:cached": "eslint --cache --ignore-path .gitignore ./src/",
+    "lint:js:fix": "eslint --fix --ignore-path .gitignore ./src/",
    "test": "NODE_ENV=test mocha --compilers ejs:ejsify 'src/**/*.spec.js'",
    "test:coverage": "NODE_ENV=test istanbul cover _mocha -- --compilers ejs:ejsify 'src/**/*.spec.js'",
    "test:e2e": "NODE_ENV=test mocha 'src/**/*.e2e.js'",
--- a/js/src/modals/PasswordManager/passwordManager.js
+++ b/js/src/modals/PasswordManager/passwordManager.js
@ -60,8 +60,11 @@ class PasswordManager extends Component {
  store = new Store(this.context.api, this.props.account);

  render () {
+    const { busy } = this.store;
+
    return (
      <Portal
+        busy={ busy }
        buttons={ this.renderDialogActions() }
        onClose={ this.onClose }
        open
@ -133,8 +136,6 @@ class PasswordManager extends Component {
  }

  renderPage () {
-    const { busy, isRepeatValid, newPassword, passwordHint } = this.store;
-
    return (
      <Tabs
        inkBarStyle={ TABS_INKBAR_STYLE }
@ -149,9 +150,35 @@ class PasswordManager extends Component {
          }
          onActive={ this.onActivateTestTab }
        >
+          { this.renderTabTest() }
+        </Tab>
+        <Tab
+          label={
+            <FormattedMessage
+              id='passwordChange.tabChange.label'
+              defaultMessage='Change Password'
+            />
+          }
+          onActive={ this.onActivateChangeTab }
+        >
+          { this.renderTabChange() }
+        </Tab>
+      </Tabs>
+    );
+  }
+
+  renderTabTest () {
+    const { actionTab, busy } = this.store;
+
+    if (actionTab !== TEST_ACTION) {
+      return null;
+    }
+
+    return (
      <Form className={ styles.form }>
        <div>
          <Input
+            autoFocus
            disabled={ busy }
            hint={
              <FormattedMessage
@ -172,19 +199,21 @@ class PasswordManager extends Component {
          />
        </div>
      </Form>
-        </Tab>
-        <Tab
-          label={
-            <FormattedMessage
-              id='passwordChange.tabChange.label'
-              defaultMessage='Change Password'
-            />
+    );
  }
-          onActive={ this.onActivateChangeTab }
-        >
+
+  renderTabChange () {
+    const { actionTab, busy, isRepeatValid, newPassword, passwordHint } = this.store;
+
+    if (actionTab !== CHANGE_ACTION) {
+      return null;
+    }
+
+    return (
      <Form className={ styles.form }>
        <div>
          <Input
+            autoFocus
            disabled={ busy }
            hint={
              <FormattedMessage
@ -274,8 +303,6 @@ class PasswordManager extends Component {
          <PasswordStrength input={ newPassword } />
        </div>
      </Form>
-        </Tab>
-      </Tabs>
    );
  }

--- a/js/src/ui/Container/container.css
+++ b/js/src/ui/Container/container.css
@ -24,6 +24,7 @@ $transitionAll: all 0.75s cubic-bezier(0.23, 1, 0.32, 1);
  flex: 1;
  height: 100%;
  padding: 0em;
+  max-width: 100%;
  position: relative;
  /*transform: translateZ(0);
  transition: $transitionAll;*/
--- a/js/src/ui/SectionList/sectionList.css
+++ b/js/src/ui/SectionList/sectionList.css
@ -18,6 +18,7 @@
 $transition: all 0.25s;
 $widthNormal: 33.33%;
 $widthExpanded: 42%;
+$widthContracted: 29%;

 .section {
  position: relative;
@ -45,6 +46,7 @@ $widthExpanded: 42%;
      display: flex;
      flex: 0 1 $widthNormal;
      max-width: $widthNormal;
+      min-width: $widthContracted;
      opacity: 0.85;
      padding: 0.25em;

--- a/js/src/views/Signer/components/RequestPending/requestPending.js
+++ b/js/src/views/Signer/components/RequestPending/requestPending.js
@ -36,7 +36,7 @@ export default class RequestPending extends Component {
      PropTypes.shape({ sign: PropTypes.object.isRequired }),
      PropTypes.shape({ signTransaction: PropTypes.object.isRequired })
    ]).isRequired,
-    signerstore: PropTypes.object.isRequired
+    signerStore: PropTypes.object.isRequired
  };

  static defaultProps = {
@ -45,7 +45,7 @@ export default class RequestPending extends Component {
  };

  render () {
-    const { className, date, focus, gasLimit, id, isSending, netVersion, onReject, payload, signerstore, origin } = this.props;
+    const { className, date, focus, gasLimit, id, isSending, netVersion, onReject, payload, signerStore, origin } = this.props;

    if (payload.sign) {
      const { sign } = payload;
@ -63,7 +63,7 @@ export default class RequestPending extends Component {
          onConfirm={ this.onConfirm }
          onReject={ onReject }
          origin={ origin }
-          signerstore={ signerstore }
+          signerStore={ signerStore }
        />
      );
    }
@ -83,7 +83,7 @@ export default class RequestPending extends Component {
          onConfirm={ this.onConfirm }
          onReject={ onReject }
          origin={ origin }
-          signerstore={ signerstore }
+          signerStore={ signerStore }
          transaction={ transaction }
        />
      );
--- a/js/src/views/Signer/components/SignRequest/signRequest.js
+++ b/js/src/views/Signer/components/SignRequest/signRequest.js
@ -47,7 +47,7 @@ export default class SignRequest extends Component {
    id: PropTypes.object.isRequired,
    isFinished: PropTypes.bool.isRequired,
    netVersion: PropTypes.string.isRequired,
-    signerstore: PropTypes.object.isRequired,
+    signerStore: PropTypes.object.isRequired,

    className: PropTypes.string,
    focus: PropTypes.bool,
@ -67,9 +67,9 @@ export default class SignRequest extends Component {
  };

  componentWillMount () {
-    const { address, signerstore } = this.props;
+    const { address, signerStore } = this.props;

-    signerstore.fetchBalance(address);
+    signerStore.fetchBalance(address);
  }

  render () {
@ -106,8 +106,8 @@ export default class SignRequest extends Component {

  renderDetails () {
    const { api } = this.context;
-    const { address, data, netVersion, origin, signerstore } = this.props;
-    const { balances, externalLink } = signerstore;
+    const { address, data, netVersion, origin, signerStore } = this.props;
+    const { balances, externalLink } = signerStore;

    const balance = balances[address];

--- a/js/src/views/Signer/components/SignRequest/signRequest.spec.js
+++ b/js/src/views/Signer/components/SignRequest/signRequest.spec.js
@ -28,7 +28,7 @@ const store = {
 describe('views/Signer/components/SignRequest', () => {
  it('renders', () => {
    expect(shallow(
-      <SignRequest signerstore={ store } />,
+      <SignRequest signerStore={ store } />,
    )).to.be.ok;
  });
 });
--- a/js/src/views/Signer/components/TransactionPending/transactionPending.js
+++ b/js/src/views/Signer/components/TransactionPending/transactionPending.js
@ -48,7 +48,7 @@ class TransactionPending extends Component {
    onConfirm: PropTypes.func.isRequired,
    onReject: PropTypes.func.isRequired,
    origin: PropTypes.any,
-    signerstore: PropTypes.object.isRequired,
+    signerStore: PropTypes.object.isRequired,
    transaction: PropTypes.shape({
      condition: PropTypes.object,
      data: PropTypes.string,
@ -75,10 +75,10 @@ class TransactionPending extends Component {
    gasPrice: this.props.transaction.gasPrice.toFixed()
  });

-  hwstore = HardwareStore.get(this.context.api);
+  hardwareStore = HardwareStore.get(this.context.api);

  componentWillMount () {
-    const { signerstore, transaction } = this.props;
+    const { signerStore, transaction } = this.props;
    const { from, gas, gasPrice, to, value } = transaction;

    const fee = tUtil.getFee(gas, gasPrice); // BigNumber object
@ -88,7 +88,7 @@ class TransactionPending extends Component {

    this.setState({ gasPriceEthmDisplay, totalValue, gasToDisplay });
    this.gasStore.setEthValue(value);
-    signerstore.fetchBalances([from, to]);
+    signerStore.fetchBalances([from, to]);
  }

  render () {
@ -98,13 +98,13 @@ class TransactionPending extends Component {
  }

  renderTransaction () {
-    const { accounts, className, focus, id, isSending, netVersion, origin, signerstore, transaction } = this.props;
+    const { accounts, className, focus, id, isSending, netVersion, origin, signerStore, transaction } = this.props;
    const { totalValue } = this.state;
-    const { balances, externalLink } = signerstore;
+    const { balances, externalLink } = signerStore;
    const { from, value } = transaction;
    const fromBalance = balances[from];
    const account = accounts[from] || {};
-    const disabled = account.hardware && !this.hwstore.isConnected(from);
+    const disabled = account.hardware && !this.hardwareStore.isConnected(from);

    return (
      <div className={ `${styles.container} ${className}` }>
--- a/js/src/views/Signer/containers/Embedded/embedded.js
+++ b/js/src/views/Signer/containers/Embedded/embedded.js
@ -101,7 +101,7 @@ class Embedded extends Component {
        onReject={ actions.startRejectRequest }
        origin={ origin }
        payload={ payload }
-        signerstore={ this.store }
+        signerStore={ this.store }
      />
    );
  }
--- a/js/src/views/Signer/containers/RequestsPage/requestsPage.js
+++ b/js/src/views/Signer/containers/RequestsPage/requestsPage.js
@ -141,7 +141,7 @@ class RequestsPage extends Component {
        onReject={ actions.startRejectRequest }
        origin={ origin }
        payload={ payload }
-        signerstore={ this.store }
+        signerStore={ this.store }
      />
    );
  }
--- a/json/src/spec/validator_set.rs
+++ b/json/src/spec/validator_set.rs
@ -16,6 +16,8 @@

 //! Validator set deserialization.

+use std::collections::BTreeMap;
+use uint::Uint;
 use hash::Address;

 /// Different ways of specifying validators.
@ -30,6 +32,9 @@ pub enum ValidatorSet {
 	/// Address of a contract that indicates the list of authorities and enables reporting of theor misbehaviour using transactions.
 	#[serde(rename="contract")]
 	Contract(Address),
+	/// A map of starting blocks for each validator set.
+	#[serde(rename="multi")]
+	Multi(BTreeMap<Uint, ValidatorSet>),
 }

 #[cfg(test)]
@ -40,11 +45,17 @@ mod tests {
 	#[test]
 	fn validator_set_deserialization() {
 		let s = r#"[{
-			"list" : ["0xc6d9d2cd449a754c494264e1809c50e34d64562b"]
+			"list": ["0xc6d9d2cd449a754c494264e1809c50e34d64562b"]
 		}, {
-			"safeContract" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
+			"safeContract": "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
 		}, {
-			"contract" : "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
+			"contract": "0xc6d9d2cd449a754c494264e1809c50e34d64562b"
+		}, {
+			"multi": {
+				"0": { "list": ["0xc6d9d2cd449a754c494264e1809c50e34d64562b"] },
+				"10": { "list": ["0xd6d9d2cd449a754c494264e1809c50e34d64562b"] },
+				"20": { "contract": "0xc6d9d2cd449a754c494264e1809c50e34d64562b" }
+			}
 		}]"#;

 		let _deserialized: Vec<ValidatorSet> = serde_json::from_str(s).unwrap();
--- a/mac/Parity/AppDelegate.swift
+++ b/mac/Parity/AppDelegate.swift
@ -26,7 +26,6 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 	let statusItem = NSStatusBar.system().statusItem(withLength: NSVariableStatusItemLength)
 	var parityPid: Int32? = nil
 	var commandLine: [String] = []
-	let defaultConfig = "[network]\nwarp = true"
 	let defaultDefaults = "{\"fat_db\":false,\"mode\":\"passive\",\"mode.alarm\":3600,\"mode.timeout\":300,\"pruning\":\"fast\",\"tracing\":false}"
 	
 	func menuAppPath() -> String {
@ -51,7 +50,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 	
 	func killParity() {
 		if let pid = self.parityPid {
-			kill(pid, SIGINT)
+			kill(pid, SIGKILL)
 		}
 	}
 	
@ -81,9 +80,6 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 			}
 		
 			let configFile = basePath?.appendingPathComponent("config.toml")
-			if !FileManager.default.fileExists(atPath: configFile!.path) {
-				try defaultConfig.write(to: configFile!, atomically: false, encoding: String.Encoding.utf8)
-			}
 		}
 		catch {}
 	}
--- a/parity/main.rs
+++ b/parity/main.rs
@ -75,6 +75,9 @@ extern crate ethcore_secretstore;
 #[cfg(feature = "dapps")]
 extern crate ethcore_dapps;

+#[cfg(windows)] extern crate ws2_32;
+#[cfg(windows)] extern crate winapi;
+
 macro_rules! dependency {
 	($dep_ty:ident, $url:expr) => {
 		{
@ -123,7 +126,7 @@ mod stratum;
 use std::{process, env};
 use std::collections::HashMap;
 use std::io::{self as stdio, BufReader, Read, Write};
-use std::fs::{remove_file, metadata, File};
+use std::fs::{remove_file, metadata, File, create_dir_all};
 use std::path::PathBuf;
 use util::sha3::sha3;
 use cli::Args;
@ -210,10 +213,11 @@ fn latest_exe_path() -> Option<PathBuf> {
 }

 fn set_spec_name_override(spec_name: String) {
-	if let Err(e) = File::create(updates_path("spec_name_overide"))
-		.and_then(|mut f| f.write_all(spec_name.as_bytes()))
+	if let Err(e) = create_dir_all(default_hypervisor_path())
+		.and_then(|_| File::create(updates_path("spec_name_overide"))
+		.and_then(|mut f| f.write_all(spec_name.as_bytes())))
 	{
-		warn!("Couldn't override chain spec: {}", e);
+		warn!("Couldn't override chain spec: {} at {:?}", e, updates_path("spec_name_overide"));
 	}
 }

@ -227,12 +231,24 @@ fn take_spec_name_override() -> Option<String> {

 #[cfg(windows)]
 fn global_cleanup() {
-	extern "system" { pub fn WSACleanup() -> i32; }
 	// We need to cleanup all sockets before spawning another Parity process. This makes shure everything is cleaned up.
 	// The loop is required because of internal refernce counter for winsock dll. We don't know how many crates we use do
 	// initialize it. There's at least 2 now.
 	for _ in 0.. 10 {
-		unsafe { WSACleanup(); }
+		unsafe { ::ws2_32::WSACleanup(); }
+	}
+}
+
+#[cfg(not(windows))]
+fn global_init() {}
+
+#[cfg(windows)]
+fn global_init() {
+	// When restarting in the same process this reinits windows sockets.
+	unsafe {
+		const WS_VERSION: u16 = 0x202;
+		let mut wsdata: ::winapi::winsock2::WSADATA = ::std::mem::zeroed();
+		::ws2_32::WSAStartup(WS_VERSION, &mut wsdata);
 	}
 }

@ -241,15 +257,17 @@ fn global_cleanup() {}

 // Starts ~/.parity-updates/parity and returns the code it exits with.
 fn run_parity() -> Option<i32> {
-	global_cleanup();
+	global_init();
 	use ::std::ffi::OsString;
 	let prefix = vec![OsString::from("--can-restart"), OsString::from("--force-direct")];
-	latest_exe_path().and_then(|exe| process::Command::new(exe)
+	let res = latest_exe_path().and_then(|exe| process::Command::new(exe)
 		.args(&(env::args_os().skip(1).chain(prefix.into_iter()).collect::<Vec<_>>()))
 		.status()
 		.map(|es| es.code().unwrap_or(128))
 		.ok()
-	)
+	);
+	global_cleanup();
+	res
 }

 const PLEASE_RESTART_EXIT_CODE: i32 = 69;
@ -257,10 +275,11 @@ const PLEASE_RESTART_EXIT_CODE: i32 = 69;
 // Run our version of parity.
 // Returns the exit error code.
 fn main_direct(can_restart: bool) -> i32 {
+	global_init();
 	let mut alt_mains = HashMap::new();
 	sync_main(&mut alt_mains);
 	stratum_main(&mut alt_mains);
-	if let Some(f) = std::env::args().nth(1).and_then(|arg| alt_mains.get(&arg.to_string())) {
+	let res = if let Some(f) = std::env::args().nth(1).and_then(|arg| alt_mains.get(&arg.to_string())) {
 		f();
 		0
 	} else {
@ -280,7 +299,9 @@ fn main_direct(can_restart: bool) -> i32 {
 				1
 			},
 		}
-	}
+	};
+	global_cleanup();
+	res
 }

 fn println_trace_main(s: String) {
--- a/rpc/src/v1/impls/parity_accounts.rs
+++ b/rpc/src/v1/impls/parity_accounts.rs
@ -20,6 +20,7 @@ use std::collections::BTreeMap;
 use util::{Address};

 use ethkey::{Brain, Generator, Secret};
+use ethstore::KeyFile;
 use ethcore::account_provider::AccountProvider;

 use jsonrpc_core::Error;
@ -315,6 +316,17 @@ impl ParityAccounts for ParityAccountsClient {
 			.map(Into::into)
 			.map_err(|e| errors::account("Could not derive account.", e))
 	}
+
+	fn export_account(&self, addr: RpcH160, password: String) -> Result<KeyFile, Error> {
+		let addr = addr.into();
+		take_weak!(self.accounts)
+			.export_account(
+				&addr,
+				password,
+			)
+			.map(Into::into)
+			.map_err(|e| errors::account("Could not export account.", e))
+	}
 }

 fn into_vec<A, B>(a: Vec<A>) -> Vec<B> where
--- a/rpc/src/v1/tests/mocked/parity_accounts.rs
+++ b/rpc/src/v1/tests/mocked/parity_accounts.rs
@ -472,3 +472,30 @@ fn derive_key_index() {
 	let res = tester.io.handle_request_sync(&request);
 	assert_eq!(res, Some(response.into()));
 }
+
+
+#[test]
+fn should_export_account() {
+	// given
+	let tester = setup();
+	let wallet = r#"{"id":"6a186c80-7797-cff2-bc2e-7c1d6a6cc76e","version":3,"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"a1c6ff99070f8032ca1c4e8add006373"},"ciphertext":"df27e3db64aa18d984b6439443f73660643c2d119a6f0fa2fa9a6456fc802d75","kdf":"pbkdf2","kdfparams":{"c":10240,"dklen":32,"prf":"hmac-sha256","salt":"ddc325335cda5567a1719313e73b4842511f3e4a837c9658eeb78e51ebe8c815"},"mac":"3dc888ae79cbb226ff9c455669f6cf2d79be72120f2298f6cb0d444fddc0aa3d"},"address":"0042e5d2a662eeaca8a7e828c174f98f35d8925b","name":"parity-export-test","meta":"{\"passwordHint\":\"parity-export-test\",\"timestamp\":1490017814987}"}"#;
+	tester.accounts.import_wallet(wallet.as_bytes(), "parity-export-test").unwrap();
+	let accounts = tester.accounts.accounts().unwrap();
+	assert_eq!(accounts.len(), 1);
+
+	// invalid password
+	let request = r#"{"jsonrpc":"2.0","method":"parity_exportAccount","params":["0x0042e5d2a662eeaca8a7e828c174f98f35d8925b","123"],"id":1}"#;
+	let response = r#"{"jsonrpc":"2.0","error":{"code":-32023,"message":"Could not export account.","data":"InvalidPassword"},"id":1}"#;
+	let res = tester.io.handle_request_sync(&request);
+	assert_eq!(res, Some(response.into()));
+
+	// correct password
+	let request = r#"{"jsonrpc":"2.0","method":"parity_exportAccount","params":["0x0042e5d2a662eeaca8a7e828c174f98f35d8925b","parity-export-test"],"id":1}"#;
+
+	let response = r#"{"jsonrpc":"2.0","result":{"address":"0042e5d2a662eeaca8a7e828c174f98f35d8925b","crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"a1c6ff99070f8032ca1c4e8add006373"},"ciphertext":"df27e3db64aa18d984b6439443f73660643c2d119a6f0fa2fa9a6456fc802d75","kdf":"pbkdf2","kdfparams":{"c":10240,"dklen":32,"prf":"hmac-sha256","salt":"ddc325335cda5567a1719313e73b4842511f3e4a837c9658eeb78e51ebe8c815"},"mac":"3dc888ae79cbb226ff9c455669f6cf2d79be72120f2298f6cb0d444fddc0aa3d"},"id":"6a186c80-7797-cff2-bc2e-7c1d6a6cc76e","meta":"{\"passwordHint\":\"parity-export-test\",\"timestamp\":1490017814987}","name":"parity-export-test","version":3},"id":1}"#;
+	let result = tester.io.handle_request_sync(&request);
+
+	println!("Result: {:?}", result);
+	println!("Response: {:?}", response);
+	assert_eq!(result, Some(response.into()));
+}
--- a/rpc/src/v1/traits/parity_accounts.rs
+++ b/rpc/src/v1/traits/parity_accounts.rs
@ -18,6 +18,7 @@
 use std::collections::BTreeMap;

 use jsonrpc_core::Error;
+use ethstore::KeyFile;
 use v1::types::{H160, H256, DappId, DeriveHash, DeriveHierarchical};

 build_rpc_trait! {
@ -175,5 +176,9 @@ build_rpc_trait! {
 		/// Resulting address can be either saved as a new account (with the same password).
 		#[rpc(name = "parity_deriveAddressIndex")]
 		fn derive_key_index(&self, H160, String, DeriveHierarchical, bool) -> Result<H160, Error>;
+
+		/// Exports an account with given address if provided password matches.
+		#[rpc(name = "parity_exportAccount")]
+		fn export_account(&self, H160, String) -> Result<KeyFile, Error>;
 	}
 }