Upgrade ethereum types (#10670)

* cargo upgrade "ethereum-types" --all --allow-prerelease

* [ethash] fix compilation errors

* [ethkey] fix compilation errors

* [journaldb] fix compilation errors

* [dir] fix compilation errors

* [ethabi] update to 0.7

* wip

* [eip-712] fix compilation errors

* [ethjson] fix compilation errors

* [Cargo.toml] add TODO to remove patches

* [ethstore] fix compilation errors

* use patched keccak-hash with new primitive-types

* wip

* [ethcore-network-devp2p] fix compilation errors

* [vm] fix compilation errors

* [common-types, evm, wasm] fix compilation errors

* [ethcore-db] Require AsRef instead of Deref for keys

* [ethcore-blockchain] fix some compilation errors

* [blooms-db] fix compilation errors

Thanks a lot @dvdplm :)

* we don't need no rlp ethereum feature

* [ethcore] fix some compilation errors

* [parity-ipfs-api] fix compilation error

* [ethcore-light] fix compilation errors

* [Cargo.lock] update parity-common

* [ethcore-private-tx] fix some compilation errors

* wip

* [ethcore-private-tx] fix compilation errors

* [parity-updater] fix compilation errors

* [parity-rpc] fix compilation errors

* [parity-bin] fix other compilation errors

* update to new ethereum-types

* update keccak-hash

* [fastmap] fix compilation in tests

* [blooms-db] fix compilation in tests

* [common-types] fix compilation in tests

* [triehash-ethereum] fix compilation in tests

* [ethkey] fix compilation in tests

* [pwasm-run-test] fix compilation errors

* [wasm] fix compilation errors

* [ethjson] fix compilation in tests

* [eip-712] fix compilation in tests

* [ethcore-blockchain] fix compilation in tests

* [ethstore] fix compilation in tests

* [ethstore-accounts] fix compilation in tests

* [parity-hash-fetch] fix compilation in tests

* [parity-whisper] fix compilation in tests

* [ethcore-miner] fix compilation in tests

* [ethcore-network-devp2p] fix compilation in tests

* [*] upgrade rand to 0.6

* [evm] get rid of num-bigint conversions

* [ethcore] downgrade trie-standardmap and criterion

* [ethcore] fix some warnings

* [ethcore] fix compilation in tests

* [evmbin] fix compilation in tests

* [updater] fix compilation in tests

* [ethash] fix compilation in tests

* [ethcore-secretstore] fix compilation in tests

* [ethcore-sync] fix compilation in tests

* [parity-rpc] fix compilation in tests

* [ethcore] finally fix compilation in tests

FUCK YEAH!!!

* [ethstore] lazy_static is unused

* [ethcore] fix test

* fix up bad merge

* [Cargo.toml] remove unused patches

* [*] replace some git dependencies with crates.io

* [Cargo.toml] remove unused lazy_static

* [*] clean up

* [ethcore] fix transaction_filter_deprecated test

* [private-tx] fix serialization tests

* fix more serialization tests

* [ethkey] fix smoky test

* [rpc] fix tests, please?

* [ethcore] remove commented out code

* Apply suggestions from code review

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* [ethstore] remove unused dev-dependency

* [ethcore] remove resolved TODO

* [*] resolve keccak-hash TODO

* [*] s/Address::default()/Address::zero()

* [rpc] remove Subscribers::new_test

* [rpc] remove EthPubSubClient::new_test

* [ethcore] use trie-standardmap from crates.io

* [dir] fix db_root_path

* [ethcore] simplify snapshot::tests::helpers::fill_storage

* Apply suggestions from code review

Co-Authored-By: David <dvdplm@gmail.com>

* [ethcore-secretstore] resolve TODO in serialization

* [ethcore-network-devp2p] resolve TODO in save_key

* [Cargo.lock] update triehash

* [*] use ethabi from crates.io

* [ethkey] use secp256k1 from master branch

* [Cargo.lock] update eth-secp256k1

Cargo.toml

@@ -45,11 +45,11 @@ ethcore-network = { path = "util/network" }
 ethcore-private-tx = { path = "ethcore/private-tx" }
 ethcore-service = { path = "ethcore/service" }
 ethcore-sync = { path = "ethcore/sync" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 ethkey = { path = "accounts/ethkey" }
 ethstore = { path = "accounts/ethstore" }
 node-filter = { path = "ethcore/node-filter" }
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 cli-signer= { path = "cli-signer" }
 parity-daemonize = "0.3"
 parity-hash-fetch = { path = "updater/hash-fetch" }
@@ -63,7 +63,7 @@ parity-whisper = { path = "whisper" }
 parity-path = "0.1"
 dir = { path = "util/dir" }
 panic_hook = { path = "util/panic-hook" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 migration-rocksdb = { path = "util/migration-rocksdb" }
 kvdb = "0.1"
 kvdb-rocksdb = "0.1.3"
@@ -81,7 +81,6 @@ 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"] }

accounts/Cargo.toml

@@ -17,5 +17,5 @@ serde_derive = "1.0"
 serde_json = "1.0"
 
 [dev-dependencies]
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 tempdir = "0.3"

accounts/ethkey/Cargo.toml

@@ -8,13 +8,13 @@ byteorder = "1.0"
 edit-distance = "2.0"
 parity-crypto = "0.4.0"
 eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 lazy_static = "1.0"
 log = "0.4"
 memzero = { path = "../../util/memzero" }
 parity-wordlist = "1.2"
 quick-error = "1.2.2"
-rand = "0.4"
+rand = "0.6"
 rustc-hex = "1.0"
 serde = "1.0"
 serde_derive = "1.0"

accounts/ethkey/src/brain_prefix.rs

@@ -47,7 +47,7 @@ impl Generator for BrainPrefix {
 		for _ in 0..self.iterations {
 			let phrase = wordlist::random_phrase(self.no_of_words);
 			let keypair = Brain::new(phrase.clone()).generate().unwrap();
-			if keypair.address().starts_with(&self.prefix) {
+			if keypair.address().as_ref().starts_with(&self.prefix) {
 				self.last_phrase = phrase;
 				return Ok(keypair)
 			}
@@ -65,6 +65,6 @@ mod tests {
 	fn prefix_generator() {
 		let prefix = vec![0x00u8];
 		let keypair = BrainPrefix::new(prefix.clone(), usize::max_value(), 12).generate().unwrap();
-		assert!(keypair.address().starts_with(&prefix));
+		assert!(keypair.address().as_bytes().starts_with(&prefix));
 	}
 }

accounts/ethkey/src/crypto.rs

@@ -57,7 +57,7 @@ pub mod ecdh {
 		};
 
 		let publ = key::PublicKey::from_slice(context, &pdata)?;
-		let sec = key::SecretKey::from_slice(context, &secret)?;
+		let sec = key::SecretKey::from_slice(context, secret.as_bytes())?;
 		let shared = ecdh::SharedSecret::new_raw(context, &publ, &sec);
 
 		Secret::from_unsafe_slice(&shared[0..32])
@@ -89,12 +89,12 @@ pub mod ecies {
 		msg[0] = 0x04u8;
 		{
 			let msgd = &mut msg[1..];
-			msgd[0..64].copy_from_slice(r.public());
+			msgd[0..64].copy_from_slice(r.public().as_bytes());
 			let iv = H128::random();
-			msgd[64..80].copy_from_slice(&iv);
+			msgd[64..80].copy_from_slice(iv.as_bytes());
 			{
 				let cipher = &mut msgd[(64 + 16)..(64 + 16 + plain.len())];
-				aes::encrypt_128_ctr(ekey, &iv, plain, cipher)?;
+				aes::encrypt_128_ctr(ekey, iv.as_bytes(), plain, cipher)?;
 			}
 			let mut hmac = hmac::Signer::with(&mkey);
 			{
@@ -156,7 +156,7 @@ pub mod ecies {
 			let mut hasher = digest::Hasher::sha256();
 			let ctrs = [(ctr >> 24) as u8, (ctr >> 16) as u8, (ctr >> 8) as u8, ctr as u8];
 			hasher.update(&ctrs);
-			hasher.update(secret);
+			hasher.update(secret.as_bytes());
 			hasher.update(s1);
 			let d = hasher.finish();
 			&mut dest[written..(written + 32)].copy_from_slice(&d);

accounts/ethkey/src/extended.rs

@@ -64,7 +64,7 @@ impl Label for H256 {
 	fn len() -> usize { 32 }
 
 	fn store(&self, target: &mut [u8]) {
-		self.copy_to(&mut target[0..32]);
+		(&mut target[0..32]).copy_from_slice(self.as_bytes());
 	}
 }
 
@@ -180,7 +180,7 @@ impl ExtendedKeyPair {
 	pub fn with_seed(seed: &[u8]) -> Result<ExtendedKeyPair, DerivationError> {
 		let (master_key, chain_code) = derivation::seed_pair(seed);
 		Ok(ExtendedKeyPair::with_secret(
-			Secret::from_unsafe_slice(&*master_key).map_err(|_| DerivationError::InvalidSeed)?,
+			Secret::from_unsafe_slice(master_key.as_bytes()).map_err(|_| DerivationError::InvalidSeed)?,
 			chain_code,
 		))
 	}
@@ -208,12 +208,13 @@ impl ExtendedKeyPair {
 // https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
 mod derivation {
 	use parity_crypto::hmac;
-	use ethereum_types::{U256, U512, H512, H256};
+	use ethereum_types::{BigEndianHash, U256, U512, H512, H256};
 	use secp256k1::key::{SecretKey, PublicKey};
 	use SECP256K1;
 	use keccak;
 	use math::curve_order;
 	use super::{Label, Derivation};
+	use std::convert::TryInto;
 
 	#[derive(Debug)]
 	pub enum Error {
@@ -237,18 +238,18 @@ mod derivation {
 	}
 
 	fn hmac_pair(data: &[u8], private_key: H256, chain_code: H256) -> (H256, H256) {
-		let private: U256 = private_key.into();
+		let private: U256 = private_key.into_uint();
 
 		// produces 512-bit derived hmac (I)
-		let skey = hmac::SigKey::sha512(&*chain_code);
+		let skey = hmac::SigKey::sha512(chain_code.as_bytes());
 		let i_512 = hmac::sign(&skey, &data[..]);
 
 		// left most 256 bits are later added to original private key
-		let hmac_key: U256 = H256::from_slice(&i_512[0..32]).into();
+		let hmac_key: U256 = H256::from_slice(&i_512[0..32]).into_uint();
 		// right most 256 bits are new chain code for later derivations
-		let next_chain_code = H256::from(&i_512[32..64]);
+		let next_chain_code = H256::from_slice(&i_512[32..64]);
 
-		let child_key = private_add(hmac_key, private).into();
+		let child_key = BigEndianHash::from_uint(&private_add(hmac_key, private));
 		(child_key, next_chain_code)
 	}
 
@@ -257,7 +258,7 @@ mod derivation {
 	fn private_soft<T>(private_key: H256, chain_code: H256, index: T) -> (H256, H256) where T: Label {
 		let mut data = vec![0u8; 33 + T::len()];
 
-		let sec_private = SecretKey::from_slice(&SECP256K1, &*private_key)
+		let sec_private = SecretKey::from_slice(&SECP256K1, private_key.as_bytes())
 			.expect("Caller should provide valid private key");
 		let sec_public = PublicKey::from_secret_key(&SECP256K1, &sec_private)
 			.expect("Caller should provide valid private key");
@@ -276,7 +277,7 @@ mod derivation {
 	// corresponding public keys of the original and derived private keys
 	fn private_hard<T>(private_key: H256, chain_code: H256, index: T) -> (H256, H256) where T: Label {
 		let mut data: Vec<u8> = vec![0u8; 33 + T::len()];
-		let private: U256 = private_key.into();
+		let private: U256 = private_key.into_uint();
 
 		// 0x00 (padding) -- private_key --  index
 		//  0             --    1..33    -- 33..end
@@ -293,9 +294,8 @@ mod derivation {
 
 	// todo: surely can be optimized
 	fn modulo(u1: U512, u2: U256) -> U256 {
-		let dv = u1 / U512::from(u2);
+		let m = u1 % U512::from(u2);
-		let md = u1 - (dv * U512::from(u2));
+		m.try_into().expect("U512 modulo U256 should fit into U256; qed")
-		md.into()
 	}
 
 	pub fn public<T>(public_key: H512, chain_code: H256, derivation: Derivation<T>) -> Result<(H512, H256), Error> where T: Label {
@@ -306,7 +306,7 @@ mod derivation {
 
 		let mut public_sec_raw = [0u8; 65];
 		public_sec_raw[0] = 4;
-		public_sec_raw[1..65].copy_from_slice(&*public_key);
+		public_sec_raw[1..65].copy_from_slice(public_key.as_bytes());
 		let public_sec = PublicKey::from_slice(&SECP256K1, &public_sec_raw).map_err(|_| Error::InvalidPoint)?;
 		let public_serialized = public_sec.serialize_vec(&SECP256K1, true);
 
@@ -317,15 +317,15 @@ mod derivation {
 		index.store(&mut data[33..(33 + T::len())]);
 
 		// HMAC512SHA produces [derived private(256); new chain code(256)]
-		let skey = hmac::SigKey::sha512(&*chain_code);
+		let skey = hmac::SigKey::sha512(chain_code.as_bytes());
 		let i_512 = hmac::sign(&skey, &data[..]);
 
-		let new_private = H256::from(&i_512[0..32]);
+		let new_private = H256::from_slice(&i_512[0..32]);
-		let new_chain_code = H256::from(&i_512[32..64]);
+		let new_chain_code = H256::from_slice(&i_512[32..64]);
 
 		// Generated private key can (extremely rarely) be out of secp256k1 key field
-		if curve_order() <= new_private.clone().into() { return Err(Error::MissingIndex); }
+		if curve_order() <= new_private.into_uint() { return Err(Error::MissingIndex); }
-		let new_private_sec = SecretKey::from_slice(&SECP256K1, &*new_private)
+		let new_private_sec = SecretKey::from_slice(&SECP256K1, new_private.as_bytes())
 			.expect("Private key belongs to the field [0..CURVE_ORDER) (checked above); So initializing can never fail; qed");
 		let mut new_public = PublicKey::from_secret_key(&SECP256K1, &new_private_sec)
 			.expect("Valid private key produces valid public key");
@@ -337,7 +337,7 @@ mod derivation {
 		let serialized = new_public.serialize_vec(&SECP256K1, false);
 
 		Ok((
-			H512::from(&serialized[1..65]),
+			H512::from_slice(&serialized[1..65]),
 			new_chain_code,
 		))
 	}
@@ -348,18 +348,18 @@ mod derivation {
 
 	pub fn chain_code(secret: H256) -> H256 {
 		// 10,000 rounds of sha3
-		let mut running_sha3 = sha3(&*secret);
+		let mut running_sha3 = sha3(secret.as_bytes());
-		for _ in 0..99999 { running_sha3 = sha3(&*running_sha3); }
+		for _ in 0..99999 { running_sha3 = sha3(running_sha3.as_bytes()); }
 		running_sha3
 	}
 
 	pub fn point(secret: H256) -> Result<H512, Error> {
-		let sec = SecretKey::from_slice(&SECP256K1, &*secret)
+		let sec = SecretKey::from_slice(&SECP256K1, secret.as_bytes())
 			.map_err(|_| Error::InvalidPoint)?;
 		let public_sec = PublicKey::from_secret_key(&SECP256K1, &sec)
 			.map_err(|_| Error::InvalidPoint)?;
 		let serialized = public_sec.serialize_vec(&SECP256K1, false);
-		Ok(H512::from(&serialized[1..65]))
+		Ok(H512::from_slice(&serialized[1..65]))
 	}
 
 	pub fn seed_pair(seed: &[u8]) -> (H256, H256) {
@@ -378,12 +378,13 @@ mod tests {
 	use super::{ExtendedSecret, ExtendedPublic, ExtendedKeyPair};
 	use secret::Secret;
 	use std::str::FromStr;
-	use ethereum_types::{H128, H256};
+	use ethereum_types::{H128, H256, H512};
 	use super::{derivation, Derivation};
 
 	fn master_chain_basic() -> (H256, H256) {
 		let seed = H128::from_str("000102030405060708090a0b0c0d0e0f")
 			.expect("Seed should be valid H128")
+			.as_bytes()
 			.to_vec();
 
 		derivation::seed_pair(&*seed)
@@ -399,27 +400,39 @@ mod tests {
 	#[test]
 	fn smoky() {
 		let secret = Secret::from_str("a100df7a048e50ed308ea696dc600215098141cb391e9527329df289f9383f65").unwrap();
-		let extended_secret = ExtendedSecret::with_code(secret.clone(), 0u64.into());
+		let extended_secret = ExtendedSecret::with_code(secret.clone(), H256::zero());
 
 		// hardened
 		assert_eq!(&**extended_secret.as_raw(), &*secret);
-		assert_eq!(&**extended_secret.derive(2147483648.into()).as_raw(), &"0927453daed47839608e414a3738dfad10aed17c459bbd9ab53f89b026c834b6".into());
+		assert_eq!(
-		assert_eq!(&**extended_secret.derive(2147483649.into()).as_raw(), &"44238b6a29c6dcbe9b401364141ba11e2198c289a5fed243a1c11af35c19dc0f".into());
+			**extended_secret.derive(2147483648.into()).as_raw(),
+			H256::from_str("0927453daed47839608e414a3738dfad10aed17c459bbd9ab53f89b026c834b6").unwrap(),
+		);
+		assert_eq!(
+			**extended_secret.derive(2147483649.into()).as_raw(),
+			H256::from_str("44238b6a29c6dcbe9b401364141ba11e2198c289a5fed243a1c11af35c19dc0f").unwrap(),
+		);
 
 		// normal
-		assert_eq!(&**extended_secret.derive(0.into()).as_raw(), &"bf6a74e3f7b36fc4c96a1e12f31abc817f9f5904f5a8fc27713163d1f0b713f6".into());
+		assert_eq!(**extended_secret.derive(0.into()).as_raw(), H256::from_str("bf6a74e3f7b36fc4c96a1e12f31abc817f9f5904f5a8fc27713163d1f0b713f6").unwrap());
-		assert_eq!(&**extended_secret.derive(1.into()).as_raw(), &"bd4fca9eb1f9c201e9448c1eecd66e302d68d4d313ce895b8c134f512205c1bc".into());
+		assert_eq!(**extended_secret.derive(1.into()).as_raw(), H256::from_str("bd4fca9eb1f9c201e9448c1eecd66e302d68d4d313ce895b8c134f512205c1bc").unwrap());
-		assert_eq!(&**extended_secret.derive(2.into()).as_raw(), &"86932b542d6cab4d9c65490c7ef502d89ecc0e2a5f4852157649e3251e2a3268".into());
+		assert_eq!(**extended_secret.derive(2.into()).as_raw(), H256::from_str("86932b542d6cab4d9c65490c7ef502d89ecc0e2a5f4852157649e3251e2a3268").unwrap());
 
 		let extended_public = ExtendedPublic::from_secret(&extended_secret).expect("Extended public should be created");
 		let derived_public = extended_public.derive(0.into()).expect("First derivation of public should succeed");
-		assert_eq!(&*derived_public.public(), &"f7b3244c96688f92372bfd4def26dc4151529747bab9f188a4ad34e141d47bd66522ff048bc6f19a0a4429b04318b1a8796c000265b4fa200dae5f6dda92dd94".into());
+		assert_eq!(
+			*derived_public.public(),
+			H512::from_str("f7b3244c96688f92372bfd4def26dc4151529747bab9f188a4ad34e141d47bd66522ff048bc6f19a0a4429b04318b1a8796c000265b4fa200dae5f6dda92dd94").unwrap(),
+		);
 
 		let keypair = ExtendedKeyPair::with_secret(
 			Secret::from_str("a100df7a048e50ed308ea696dc600215098141cb391e9527329df289f9383f65").unwrap(),
-			064.into(),
+			H256::from_low_u64_be(64),
+		);
+		assert_eq!(
+			**keypair.derive(2147483648u32.into()).expect("Derivation of keypair should succeed").secret().as_raw(),
+			H256::from_str("edef54414c03196557cf73774bc97a645c9a1df2164ed34f0c2a78d1375a930c").unwrap(),
 		);
-		assert_eq!(&**keypair.derive(2147483648u32.into()).expect("Derivation of keypair should succeed").secret().as_raw(), &"edef54414c03196557cf73774bc97a645c9a1df2164ed34f0c2a78d1375a930c".into());
 	}
 
 	#[test]
@@ -427,7 +440,7 @@ mod tests {
 		let secret = Secret::from_str("a100df7a048e50ed308ea696dc600215098141cb391e9527329df289f9383f65").unwrap();
 		let derivation_secret = H256::from_str("51eaf04f9dbbc1417dc97e789edd0c37ecda88bac490434e367ea81b71b7b015").unwrap();
 
-		let extended_secret = ExtendedSecret::with_code(secret.clone(), 0u64.into());
+		let extended_secret = ExtendedSecret::with_code(secret.clone(), H256::zero());
 		let extended_public = ExtendedPublic::from_secret(&extended_secret).expect("Extended public should be created");
 
 		let derived_secret0 = extended_secret.derive(Derivation::Soft(derivation_secret));
@@ -442,15 +455,18 @@ mod tests {
 	fn h256_hard() {
 		let secret = Secret::from_str("a100df7a048e50ed308ea696dc600215098141cb391e9527329df289f9383f65").unwrap();
 		let derivation_secret = H256::from_str("51eaf04f9dbbc1417dc97e789edd0c37ecda88bac490434e367ea81b71b7b015").unwrap();
-		let extended_secret = ExtendedSecret::with_code(secret.clone(), 1u64.into());
+		let extended_secret = ExtendedSecret::with_code(secret.clone(), H256::from_low_u64_be(1));
 
-		assert_eq!(&**extended_secret.derive(Derivation::Hard(derivation_secret)).as_raw(), &"2bc2d696fb744d77ff813b4a1ef0ad64e1e5188b622c54ba917acc5ebc7c5486".into());
+		assert_eq!(
+			**extended_secret.derive(Derivation::Hard(derivation_secret)).as_raw(),
+			H256::from_str("2bc2d696fb744d77ff813b4a1ef0ad64e1e5188b622c54ba917acc5ebc7c5486").unwrap(),
+		);
 	}
 
 	#[test]
 	fn match_() {
 		let secret = Secret::from_str("a100df7a048e50ed308ea696dc600215098141cb391e9527329df289f9383f65").unwrap();
-		let extended_secret = ExtendedSecret::with_code(secret.clone(), 1.into());
+		let extended_secret = ExtendedSecret::with_code(secret.clone(), H256::from_low_u64_be(1));
 		let extended_public = ExtendedPublic::from_secret(&extended_secret).expect("Extended public should be created");
 
 		let derived_secret0 = extended_secret.derive(0.into());
@@ -465,6 +481,7 @@ mod tests {
 	fn test_seeds() {
 		let seed = H128::from_str("000102030405060708090a0b0c0d0e0f")
 			.expect("Seed should be valid H128")
+			.as_bytes()
 			.to_vec();
 
 		// private key from bitcoin test vector

accounts/ethkey/src/keypair.rs

@@ -16,14 +16,13 @@
 
 use std::fmt;
 use secp256k1::key;
-use rustc_hex::ToHex;
-use keccak::Keccak256;
 use super::{Secret, Public, Address, SECP256K1, Error};
+use parity_crypto::Keccak256 as _;
 
 pub fn public_to_address(public: &Public) -> Address {
 	let hash = public.keccak256();
-	let mut result = Address::default();
+	let mut result = Address::zero();
-	result.copy_from_slice(&hash[12..]);
+	result.as_bytes_mut().copy_from_slice(&hash[12..]);
 	result
 }
 
@@ -36,9 +35,9 @@ pub struct KeyPair {
 
 impl fmt::Display for KeyPair {
 	fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-		writeln!(f, "secret:  {}", self.secret.to_hex())?;
+		writeln!(f, "secret:  {:x}", self.secret)?;
-		writeln!(f, "public:  {}", self.public.to_hex())?;
+		writeln!(f, "public:  {:x}", self.public)?;
-		write!(f, "address: {}", self.address().to_hex())
+		write!(f, "address: {:x}", self.address())
 	}
 }
 
@@ -51,7 +50,7 @@ impl KeyPair {
 		let serialized = pub_key.serialize_vec(context, false);
 
 		let mut public = Public::default();
-		public.copy_from_slice(&serialized[1..65]);
+		public.as_bytes_mut().copy_from_slice(&serialized[1..65]);
 
 		let keypair = KeyPair {
 			secret: secret,
@@ -70,7 +69,7 @@ impl KeyPair {
 		let serialized = publ.serialize_vec(context, false);
 		let secret = Secret::from(sec);
 		let mut public = Public::default();
-		public.copy_from_slice(&serialized[1..65]);
+		public.as_bytes_mut().copy_from_slice(&serialized[1..65]);
 
 		KeyPair {
 			secret: secret,

accounts/ethkey/src/math.rs

@@ -17,7 +17,7 @@
 use super::{SECP256K1, Public, Secret, Error};
 use secp256k1::key;
 use secp256k1::constants::{GENERATOR_X, GENERATOR_Y, CURVE_ORDER};
-use ethereum_types::{U256, H256};
+use ethereum_types::{BigEndianHash as _, U256, H256};
 
 /// Whether the public key is valid.
 pub fn public_is_valid(public: &Public) -> bool {
@@ -78,7 +78,7 @@ pub fn generation_point() -> Public {
 
 /// Return secp256k1 elliptic curve order
 pub fn curve_order() -> U256 {
-	H256::from_slice(&CURVE_ORDER).into()
+	H256::from_slice(&CURVE_ORDER).into_uint()
 }
 
 fn to_secp256k1_public(public: &Public) -> Result<key::PublicKey, Error> {
@@ -93,7 +93,7 @@ fn to_secp256k1_public(public: &Public) -> Result<key::PublicKey, Error> {
 
 fn set_public(public: &mut Public, key_public: &key::PublicKey) {
 	let key_public_serialized = key_public.serialize_vec(&SECP256K1, false);
-	public.copy_from_slice(&key_public_serialized[1..65]);
+	public.as_bytes_mut().copy_from_slice(&key_public_serialized[1..65]);
 }
 
 #[cfg(test)]

accounts/ethkey/src/prefix.rs

@@ -37,7 +37,7 @@ impl Generator for Prefix {
 	fn generate(&mut self) -> Result<KeyPair, Error> {
 		for _ in 0..self.iterations {
 			let keypair = Random.generate()?;
-			if keypair.address().starts_with(&self.prefix) {
+			if keypair.address().as_ref().starts_with(&self.prefix) {
 				return Ok(keypair)
 			}
 		}
@@ -54,6 +54,6 @@ mod tests {
 	fn prefix_generator() {
 		let prefix = vec![0xffu8];
 		let keypair = Prefix::new(prefix.clone(), usize::max_value()).generate().unwrap();
-		assert!(keypair.address().starts_with(&prefix));
+		assert!(keypair.address().as_bytes().starts_with(&prefix));
 	}
 }

accounts/ethkey/src/random.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
-use rand::os::OsRng;
+use rand::rngs::OsRng;
 use super::{Generator, KeyPair, SECP256K1};
 
 /// Randomly generates new keypair, instantiating the RNG each time.

accounts/ethkey/src/secret.rs

@@ -59,14 +59,14 @@ impl Secret {
 		if key.len() != 32 {
 			return None
 		}
-		let mut h = H256::default();
+		let mut h = H256::zero();
-		h.copy_from_slice(&key[0..32]);
+		h.as_bytes_mut().copy_from_slice(&key[0..32]);
 		Some(Secret { inner: Memzero::from(h) })
 	}
 
 	/// Creates zero key, which is invalid for crypto operations, but valid for math operation.
 	pub fn zero() -> Self {
-		Secret { inner: Memzero::from(H256::default()) }
+		Secret { inner: Memzero::from(H256::zero()) }
 	}
 
 	/// Imports and validates the key.

accounts/ethkey/src/signature.rs

@@ -68,24 +68,44 @@ impl Signature {
 	/// Create a signature object from the sig.
 	pub fn from_rsv(r: &H256, s: &H256, v: u8) -> Self {
 		let mut sig = [0u8; 65];
-		sig[0..32].copy_from_slice(&r);
+		sig[0..32].copy_from_slice(r.as_ref());
-		sig[32..64].copy_from_slice(&s);
+		sig[32..64].copy_from_slice(s.as_ref());
 		sig[64] = v;
 		Signature(sig)
 	}
 
 	/// Check if this is a "low" signature.
 	pub fn is_low_s(&self) -> bool {
-		H256::from_slice(self.s()) <= "7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0".into()
+		// "7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0"
+		const MASK: H256 = H256([
+			0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+			0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+			0x5D, 0x57, 0x6E, 0x73, 0x57, 0xA4, 0x50, 0x1D,
+			0xDF, 0xE9, 0x2F, 0x46, 0x68, 0x1B, 0x20, 0xA0,
+		]);
+		H256::from_slice(self.s()) <= MASK
 	}
 
 	/// Check if each component of the signature is in range.
 	pub fn is_valid(&self) -> bool {
+		// "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141"
+		const MASK: H256 = H256([
+			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe,
+			0xba, 0xae, 0xdc, 0xe6, 0xaf, 0x48, 0xa0, 0x3b,
+			0xbf, 0xd2, 0x5e, 0x8c, 0xd0, 0x36, 0x41, 0x41,
+		]);
+		const ONE: H256 = H256([
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+		]);
+		let r = H256::from_slice(self.r());
+		let s = H256::from_slice(self.s());
 		self.v() <= 1 &&
-			H256::from_slice(self.r()) < "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141".into() &&
+			r < MASK && r >= ONE &&
-			H256::from_slice(self.r()) >= 1.into() &&
+			s < MASK && s >= ONE
-			H256::from_slice(self.s()) < "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141".into() &&
-			H256::from_slice(self.s()) >= 1.into()
 	}
 }
 
@@ -190,7 +210,7 @@ impl DerefMut for Signature {
 
 pub fn sign(secret: &Secret, message: &Message) -> Result<Signature, Error> {
 	let context = &SECP256K1;
-	let sec = SecretKey::from_slice(context, &secret)?;
+	let sec = SecretKey::from_slice(context, secret.as_ref())?;
 	let s = context.sign_recoverable(&SecpMessage::from_slice(&message[..])?, &sec)?;
 	let (rec_id, data) = s.serialize_compact(context);
 	let mut data_arr = [0; 65];
@@ -208,7 +228,7 @@ pub fn verify_public(public: &Public, signature: &Signature, message: &Message)
 
 	let pdata: [u8; 65] = {
 		let mut temp = [4u8; 65];
-		temp[1..65].copy_from_slice(&**public);
+		temp[1..65].copy_from_slice(public.as_bytes());
 		temp
 	};
 
@@ -233,7 +253,7 @@ pub fn recover(signature: &Signature, message: &Message) -> Result<Public, Error
 	let serialized = pubkey.serialize_vec(context, false);
 
 	let mut public = Public::default();
-	public.copy_from_slice(&serialized[1..65]);
+	public.as_bytes_mut().copy_from_slice(&serialized[1..65]);
 	Ok(public)
 }
 

accounts/ethstore/Cargo.toml

@@ -6,7 +6,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 log = "0.4"
 libc = "0.2"
-rand = "0.4"
+rand = "0.6"
 ethkey = { path = "../ethkey" }
 serde = "1.0"
 serde_json = "1.0"
@@ -17,12 +17,11 @@ time = "0.1.34"
 itertools = "0.5"
 parking_lot = "0.7"
 parity-crypto = "0.4.0"
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 dir = { path = "../../util/dir" }
 smallvec = "0.6"
 parity-wordlist = "1.0"
 tempdir = "0.3"
-lazy_static = "1.2.0"
 
 [dev-dependencies]
 matches = "0.1"

accounts/ethstore/cli/Cargo.toml

@@ -21,4 +21,4 @@ path = "src/main.rs"
 doc = false
 
 [dev-dependencies]
-tempdir = "0.3.5"
+tempdir = "0.3"

accounts/ethstore/src/account/crypto.rs

@@ -74,7 +74,7 @@ impl From<Crypto> for String {
 impl Crypto {
 	/// Encrypt account secret
 	pub fn with_secret(secret: &Secret, password: &Password, iterations: u32) -> Result<Self, crypto::Error> {
-		Crypto::with_plain(&*secret, password, iterations)
+		Crypto::with_plain(secret.as_ref(), password, iterations)
 	}
 
 	/// Encrypt custom plain data

accounts/ethstore/src/accounts_dir/memory.rs

@@ -68,7 +68,7 @@ impl KeyDirectory for MemoryDirectory {
 	fn unique_repr(&self) -> Result<u64, Error> {
 		let mut val = 0u64;
 		let accounts = self.accounts.read();
-		for acc in accounts.keys() { val = val ^ acc.low_u64() }
+		for acc in accounts.keys() { val = val ^ acc.to_low_u64_be() }
 		Ok(val)
 	}
 }

accounts/ethstore/src/ethstore.rs

@@ -1084,7 +1084,7 @@ mod tests {
 			SecretVaultRef::Root,
 			&address,
 			&"test".into(),
-			Derivation::HardHash(H256::from(0)),
+			Derivation::HardHash(H256::zero()),
 		).unwrap();
 
 		// there should be 2 accounts in the store

accounts/ethstore/src/lib.rs

@@ -36,8 +36,6 @@ 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]

accounts/ethstore/src/random.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
-use rand::{Rng, OsRng};
+use rand::{Rng, RngCore, rngs::OsRng, distributions::Alphanumeric};
 
 pub trait Random {
 	fn random() -> Self where Self: Sized;
@@ -41,5 +41,5 @@ impl Random for [u8; 32] {
 /// Generate a random string of given length.
 pub fn random_string(length: usize) -> String {
 	let mut rng = OsRng::new().expect("Not able to operate without random source.");
-	rng.gen_ascii_chars().take(length).collect()
+	rng.sample_iter(&Alphanumeric).take(length).collect()
 }

accounts/ethstore/tests/api.rs

@@ -16,6 +16,7 @@
 
 extern crate rand;
 extern crate ethstore;
+extern crate ethereum_types;
 
 mod util;
 
@@ -23,6 +24,8 @@ use ethstore::{EthStore, SimpleSecretStore, SecretVaultRef, StoreAccountRef};
 use ethstore::ethkey::{Random, Generator, Secret, KeyPair, verify_address};
 use ethstore::accounts_dir::RootDiskDirectory;
 use util::TransientDir;
+use ethereum_types::Address;
+use std::str::FromStr;
 
 #[test]
 fn secret_store_create() {
@@ -114,9 +117,9 @@ fn secret_store_laod_geth_files() {
 	let dir = RootDiskDirectory::at(test_path());
 	let store = EthStore::open(Box::new(dir)).unwrap();
 	assert_eq!(store.accounts().unwrap(), vec![
-		StoreAccountRef::root("3f49624084b67849c7b4e805c5988c21a430f9d9".into()),
+		StoreAccountRef::root(Address::from_str("3f49624084b67849c7b4e805c5988c21a430f9d9").unwrap()),
-		StoreAccountRef::root("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf".into()),
+		StoreAccountRef::root(Address::from_str("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf").unwrap()),
-		StoreAccountRef::root("63121b431a52f8043c16fcf0d1df9cb7b5f66649".into()),
+		StoreAccountRef::root(Address::from_str("63121b431a52f8043c16fcf0d1df9cb7b5f66649").unwrap()),
 	]);
 }
 
@@ -125,8 +128,8 @@ fn secret_store_load_pat_files() {
 	let dir = RootDiskDirectory::at(pat_path());
 	let store = EthStore::open(Box::new(dir)).unwrap();
 	assert_eq!(store.accounts().unwrap(), vec![
-		StoreAccountRef::root("3f49624084b67849c7b4e805c5988c21a430f9d9".into()),
+		StoreAccountRef::root(Address::from_str("3f49624084b67849c7b4e805c5988c21a430f9d9").unwrap()),
-		StoreAccountRef::root("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf".into()),
+		StoreAccountRef::root(Address::from_str("5ba4dcf897e97c2bdf8315b9ef26c13c085988cf").unwrap()),
 	]);
 }
 
@@ -140,8 +143,8 @@ fn test_decrypting_files_with_short_ciphertext() {
 	let store = EthStore::open(Box::new(dir)).unwrap();
 	let accounts = store.accounts().unwrap();
 	assert_eq!(accounts, vec![
-		StoreAccountRef::root("31e9d1e6d844bd3a536800ef8d8be6a9975db509".into()),
+		StoreAccountRef::root(Address::from_str("31e9d1e6d844bd3a536800ef8d8be6a9975db509").unwrap()),
-		StoreAccountRef::root("d1e64e5480bfaf733ba7d48712decb8227797a4e".into()),
+		StoreAccountRef::root(Address::from_str("d1e64e5480bfaf733ba7d48712decb8227797a4e").unwrap()),
 	]);
 
 	let message = Default::default();

accounts/ethstore/tests/util/transient_dir.rs

@@ -16,7 +16,7 @@
 
 use std::path::PathBuf;
 use std::{env, fs};
-use rand::{Rng, OsRng};
+use rand::{RngCore, rngs::OsRng};
 use ethstore::accounts_dir::{KeyDirectory, RootDiskDirectory};
 use ethstore::{Error, SafeAccount};
 

accounts/src/lib.rs

@@ -528,7 +528,7 @@ mod tests {
 		let derived_addr = ap.derive_account(
 			&kp.address(),
 			None,
-			Derivation::SoftHash(H256::from(999)),
+			Derivation::SoftHash(H256::from_low_u64_be(999)),
 			false,
 		).expect("Derivation should not fail");
 
@@ -546,7 +546,7 @@ mod tests {
 		let derived_addr = ap.derive_account(
 			&kp.address(),
 			None,
-			Derivation::SoftHash(H256::from(999)),
+			Derivation::SoftHash(H256::from_low_u64_be(999)),
 			true,
 		).expect("Derivation should not fail");
 
@@ -567,7 +567,7 @@ mod tests {
 		let derived_addr = ap.derive_account(
 			&kp.address(),
 			None,
-			Derivation::SoftHash(H256::from(1999)),
+			Derivation::SoftHash(H256::from_low_u64_be(1999)),
 			true,
 		).expect("Derivation should not fail");
 		ap.unlock_account_permanently(derived_addr, "base".into())
@@ -579,7 +579,7 @@ mod tests {
 		let signed_msg2 = ap.sign_derived(
 			&kp.address(),
 			None,
-			Derivation::SoftHash(H256::from(1999)),
+			Derivation::SoftHash(H256::from_low_u64_be(1999)),
 			msg,
 		).expect("Derived signing with existing unlocked account should not fail");
 

accounts/src/stores.rs

@@ -153,7 +153,7 @@ impl<K: hash::Hash + Eq, V> DiskMap<K, V> {
 
 #[cfg(test)]
 mod tests {
-	use super::AddressBook;
+	use super::{AddressBook, Address};
 	use std::collections::HashMap;
 	use tempdir::TempDir;
 	use crate::account_data::AccountMeta;
@@ -162,12 +162,12 @@ mod tests {
 	fn should_save_and_reload_address_book() {
 		let tempdir = TempDir::new("").unwrap();
 		let mut b = AddressBook::new(tempdir.path());
-		b.set_name(1.into(), "One".to_owned());
+		b.set_name(Address::from_low_u64_be(1), "One".to_owned());
-		b.set_meta(1.into(), "{1:1}".to_owned());
+		b.set_meta(Address::from_low_u64_be(1), "{1:1}".to_owned());
 		let b = AddressBook::new(tempdir.path());
 		assert_eq!(b.get(), vec![
-		   (1, AccountMeta {name: "One".to_owned(), meta: "{1:1}".to_owned(), uuid: None})
+		   (Address::from_low_u64_be(1), AccountMeta {name: "One".to_owned(), meta: "{1:1}".to_owned(), uuid: None})
-		].into_iter().map(|(a, b)| (a.into(), b)).collect::<HashMap<_, _>>());
+		].into_iter().collect::<HashMap<_, _>>());
 	}
 
 	#[test]
@@ -175,15 +175,15 @@ mod tests {
 		let tempdir = TempDir::new("").unwrap();
 		let mut b = AddressBook::new(tempdir.path());
 
-		b.set_name(1.into(), "One".to_owned());
+		b.set_name(Address::from_low_u64_be(1), "One".to_owned());
-		b.set_name(2.into(), "Two".to_owned());
+		b.set_name(Address::from_low_u64_be(2), "Two".to_owned());
-		b.set_name(3.into(), "Three".to_owned());
+		b.set_name(Address::from_low_u64_be(3), "Three".to_owned());
-		b.remove(2.into());
+		b.remove(Address::from_low_u64_be(2).into());
 
 		let b = AddressBook::new(tempdir.path());
 		assert_eq!(b.get(), vec![
-			(1, AccountMeta{name: "One".to_owned(), meta: "{}".to_owned(), uuid: None}),
+			(Address::from_low_u64_be(1), AccountMeta{name: "One".to_owned(), meta: "{}".to_owned(), uuid: None}),
-			(3, AccountMeta{name: "Three".to_owned(), meta: "{}".to_owned(), uuid: None}),
+			(Address::from_low_u64_be(3), AccountMeta{name: "Three".to_owned(), meta: "{}".to_owned(), uuid: None}),
-		].into_iter().map(|(a, b)| (a.into(), b)).collect::<HashMap<_, _>>());
+		].into_iter().collect::<HashMap<_, _>>());
 	}
 }

cli-signer/Cargo.toml

@@ -7,7 +7,7 @@ name = "cli-signer"
 version = "1.4.0"
 
 [dependencies]
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 futures = "0.1"
 rpassword = "1.0"
 parity-rpc = { path = "../rpc" }

cli-signer/rpc-client/Cargo.toml

@@ -7,7 +7,7 @@ name = "parity-rpc-client"
 version = "1.4.0"
 
 [dependencies]
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 futures = "0.1"
 log = "0.4"
 serde = "1.0"
@@ -18,4 +18,4 @@ parking_lot = "0.7"
 jsonrpc-core = "10.0.1"
 jsonrpc-ws-server = "10.0.1"
 parity-rpc = { path = "../../rpc" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"

ethash/Cargo.toml

@@ -6,8 +6,8 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 crunchy = "0.1.0"
 either = "1.0.0"
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 log = "0.4"
 memmap = "0.6"
 parking_lot = "0.7"

ethash/src/lib.rs

@@ -52,14 +52,14 @@ mod progpow;
 pub use cache::{NodeCacheBuilder, OptimizeFor};
 pub use compute::{ProofOfWork, quick_get_difficulty, slow_hash_block_number};
 use compute::Light;
-use ethereum_types::{U256, U512};
+use ethereum_types::{BigEndianHash, U256, U512};
 use keccak::H256;
 use parking_lot::Mutex;
 pub use seed_compute::SeedHashCompute;
 pub use shared::ETHASH_EPOCH_LENGTH;
 use std::mem;
 use std::path::{Path, PathBuf};
-
+use std::convert::TryFrom;
 use std::sync::Arc;
 
 struct LightCache {
@@ -161,12 +161,12 @@ impl EthashManager {
 
 /// Convert an Ethash boundary to its original difficulty. Basically just `f(x) = 2^256 / x`.
 pub fn boundary_to_difficulty(boundary: &ethereum_types::H256) -> U256 {
-	difficulty_to_boundary_aux(&**boundary)
+	difficulty_to_boundary_aux(&boundary.into_uint())
 }
 
 /// Convert an Ethash difficulty to the target boundary. Basically just `f(x) = 2^256 / x`.
 pub fn difficulty_to_boundary(difficulty: &U256) -> ethereum_types::H256 {
-	difficulty_to_boundary_aux(difficulty).into()
+	BigEndianHash::from_uint(&difficulty_to_boundary_aux(difficulty))
 }
 
 fn difficulty_to_boundary_aux<T: Into<U512>>(difficulty: T) -> ethereum_types::U256 {
@@ -177,8 +177,8 @@ fn difficulty_to_boundary_aux<T: Into<U512>>(difficulty: T) -> ethereum_types::U
 	if difficulty == U512::one() {
 		U256::max_value()
 	} else {
-		// difficulty > 1, so result should never overflow 256 bits
+		const PROOF: &str = "difficulty > 1, so result never overflows 256 bits; qed";
-		U256::from((U512::one() << 256) / difficulty)
+		U256::try_from((U512::one() << 256) / difficulty).expect(PROOF)
 	}
 }
 
@@ -203,10 +203,10 @@ fn test_lru() {
 
 #[test]
 fn test_difficulty_to_boundary() {
-	use ethereum_types::H256;
+	use ethereum_types::{H256, BigEndianHash};
 	use std::str::FromStr;
 
-	assert_eq!(difficulty_to_boundary(&U256::from(1)), H256::from(U256::max_value()));
+	assert_eq!(difficulty_to_boundary(&U256::from(1)), BigEndianHash::from_uint(&U256::max_value()));
 	assert_eq!(difficulty_to_boundary(&U256::from(2)), H256::from_str("8000000000000000000000000000000000000000000000000000000000000000").unwrap());
 	assert_eq!(difficulty_to_boundary(&U256::from(4)), H256::from_str("4000000000000000000000000000000000000000000000000000000000000000").unwrap());
 	assert_eq!(difficulty_to_boundary(&U256::from(32)), H256::from_str("0800000000000000000000000000000000000000000000000000000000000000").unwrap());
@@ -220,9 +220,18 @@ fn test_difficulty_to_boundary_regression() {
 	// https://github.com/paritytech/parity-ethereum/issues/8397
 	for difficulty in 1..9 {
 		assert_eq!(U256::from(difficulty), boundary_to_difficulty(&difficulty_to_boundary(&difficulty.into())));
-		assert_eq!(H256::from(difficulty), difficulty_to_boundary(&boundary_to_difficulty(&difficulty.into())));
+		assert_eq!(
-		assert_eq!(U256::from(difficulty), boundary_to_difficulty(&boundary_to_difficulty(&difficulty.into()).into()));
+			H256::from_low_u64_be(difficulty),
-		assert_eq!(H256::from(difficulty), difficulty_to_boundary(&difficulty_to_boundary(&difficulty.into()).into()));
+			difficulty_to_boundary(&boundary_to_difficulty(&H256::from_low_u64_be(difficulty))),
+		);
+		assert_eq!(
+			U256::from(difficulty),
+			boundary_to_difficulty(&BigEndianHash::from_uint(&boundary_to_difficulty(&H256::from_low_u64_be(difficulty)))),
+		);
+		assert_eq!(
+			H256::from_low_u64_be(difficulty),
+			difficulty_to_boundary(&difficulty_to_boundary(&difficulty.into()).into_uint()),
+		);
 	}
 }
 
@@ -235,5 +244,5 @@ fn test_difficulty_to_boundary_panics_on_zero() {
 #[test]
 #[should_panic]
 fn test_boundary_to_difficulty_panics_on_zero() {
-	boundary_to_difficulty(&ethereum_types::H256::from(0));
+	boundary_to_difficulty(&ethereum_types::H256::zero());
 }

ethcore/Cargo.toml

@@ -15,9 +15,9 @@ common-types = { path = "types" }
 crossbeam = "0.4"
 derive_more = "0.14.0"
 env_logger = { version = "0.5", optional = true }
-ethabi = "6.0"
+ethabi = "8.0"
-ethabi-contract = "6.0"
+ethabi-contract = "8.0"
-ethabi-derive = "6.0"
+ethabi-derive = "8.0"
 ethash = { path = "../ethash" }
 ethcore-blockchain = { path = "./blockchain" }
 ethcore-bloom-journal = { path = "../util/bloom" }
@@ -26,7 +26,7 @@ ethcore-db = { path = "./db" }
 ethcore-io = { path = "../util/io" }
 ethcore-miner = { path = "../miner" }
 ethcore-stratum = { path = "../miner/stratum", optional = true }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 ethjson = { path = "../json" }
 ethkey = { path = "../accounts/ethkey" }
 evm = { path = "evm" }
@@ -35,7 +35,7 @@ hash-db = "0.11.0"
 heapsize = "0.4"
 itertools = "0.5"
 journaldb = { path = "../util/journaldb" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 keccak-hasher = { path = "../util/keccak-hasher" }
 kvdb = "0.1"
 kvdb-memorydb = "0.1"
@@ -55,15 +55,15 @@ parity-snappy = "0.1"
 parking_lot = "0.7"
 trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../util/patricia-trie-ethereum" }
-rand = "0.4"
+rand = "0.6"
 rayon = "1.0"
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 rlp_derive = { path = "../util/rlp-derive" }
 rustc-hex = "1.0"
 serde = "1.0"
 serde_derive = "1.0"
 stats = { path = "../util/stats" }
-tempdir = {version="0.3", optional = true}
+tempdir = { version = "0.3", optional = true }
 time-utils = { path = "../util/time-utils" }
 trace-time = "0.1"
 triehash-ethereum = { version = "0.2",  path = "../util/triehash-ethereum" }
@@ -71,6 +71,7 @@ unexpected = { path = "../util/unexpected" }
 using_queue = { path = "../miner/using-queue" }
 vm = { path = "vm" }
 wasm = { path = "wasm" }
+rand_xorshift = "0.1.1"
 
 [dev-dependencies]
 blooms-db = { path = "../util/blooms-db" }
@@ -82,7 +83,7 @@ kvdb-rocksdb = "0.1.3"
 parity-runtime = { path = "../util/runtime" }
 rlp_compress = { path = "../util/rlp-compress" }
 tempdir = "0.3"
-trie-standardmap = "0.1"
+trie-standardmap = "0.12.3"
 
 [features]
 parity = ["work-notify", "price-info", "stratum"]

ethcore/blockchain/Cargo.toml

@@ -12,7 +12,7 @@ ansi_term = "0.10"
 blooms-db = { path = "../../util/blooms-db" }
 common-types = { path = "../types" }
 ethcore-db = { path = "../db" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 heapsize = "0.4"
 itertools = "0.5"
 kvdb = "0.1"
@@ -20,14 +20,14 @@ log = "0.4"
 parity-bytes = "0.1"
 parking_lot = "0.7"
 rayon = "1.0"
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 rlp_compress = { path = "../../util/rlp-compress" }
 rlp_derive = { path = "../../util/rlp-derive" }
 
 [dev-dependencies]
 env_logger = "0.5"
 ethkey = { path = "../../accounts/ethkey" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 rustc-hex = "1.0"
 tempdir = "0.3"
 kvdb-memorydb = "0.1"

ethcore/blockchain/src/blockchain.rs

@@ -284,7 +284,7 @@ impl BlockProvider for BlockChain {
 		}
 
 		// Read from DB and populate cache
-		let b = self.db.key_value().get(db::COL_HEADERS, hash)
+		let b = self.db.key_value().get(db::COL_HEADERS, hash.as_bytes())
 			.expect("Low level database error when fetching block header data. Some issue with disk?")?;
 
 		let header = encoded::Header::new(decompress(&b, blocks_swapper()).into_vec());
@@ -314,7 +314,7 @@ impl BlockProvider for BlockChain {
 		}
 
 		// Read from DB and populate cache
-		let b = self.db.key_value().get(db::COL_BODIES, hash)
+		let b = self.db.key_value().get(db::COL_BODIES, hash.as_bytes())
 			.expect("Low level database error when fetching block body data. Some issue with disk?")?;
 
 		let body = encoded::Body::new(decompress(&b, blocks_swapper()).into_vec());
@@ -469,7 +469,7 @@ impl<'a> Iterator for AncestryWithMetadataIter<'a> {
 					})
 				},
 				_ => {
-					self.current = H256::default();
+					self.current = H256::zero();
 					None
 				},
 			}
@@ -572,13 +572,13 @@ impl BlockChain {
 				};
 
 				let mut batch = DBTransaction::new();
-				batch.put(db::COL_HEADERS, &hash, block.header_rlp().as_raw());
+				batch.put(db::COL_HEADERS, hash.as_bytes(), block.header_rlp().as_raw());
-				batch.put(db::COL_BODIES, &hash, &Self::block_to_body(genesis));
+				batch.put(db::COL_BODIES, hash.as_bytes(), &Self::block_to_body(genesis));
 
 				batch.write(db::COL_EXTRA, &hash, &details);
 				batch.write(db::COL_EXTRA, &header.number(), &hash);
 
-				batch.put(db::COL_EXTRA, b"best", &hash);
+				batch.put(db::COL_EXTRA, b"best", hash.as_bytes());
 				bc.db.key_value().write(batch).expect("Low level database error when fetching 'best' block. Some issue with disk?");
 				hash
 			}
@@ -639,7 +639,7 @@ impl BlockChain {
 					if hash != bc.genesis_hash() {
 						trace!("First block calculated: {:?}", hash);
 						let mut batch = db.key_value().transaction();
-						batch.put(db::COL_EXTRA, b"first", &hash);
+						batch.put(db::COL_EXTRA, b"first", hash.as_bytes());
 						db.key_value().write(batch).expect("Low level database error when writing 'first' block. Some issue with disk?");
 						bc.first_block = Some(hash);
 					}
@@ -788,8 +788,8 @@ impl BlockChain {
 		let compressed_body = compress(&Self::block_to_body(block.raw()), blocks_swapper());
 
 		// store block in db
-		batch.put(db::COL_HEADERS, &hash, &compressed_header);
+		batch.put(db::COL_HEADERS, hash.as_bytes(), &compressed_header);
-		batch.put(db::COL_BODIES, &hash, &compressed_body);
+		batch.put(db::COL_BODIES, hash.as_bytes(), &compressed_body);
 
 		let maybe_parent = self.block_details(&block_parent_hash);
 
@@ -932,7 +932,7 @@ impl BlockChain {
 			*pending_best_ancient_block = Some(None);
 		} else if block_number > ancient_number {
 			trace!(target: "blockchain", "Updating the best ancient block to {}.", block_number);
-			batch.put(db::COL_EXTRA, b"ancient", &block_hash);
+			batch.put(db::COL_EXTRA, b"ancient", block_hash.as_bytes());
 			*pending_best_ancient_block = Some(Some(BestAncientBlock {
 				hash: *block_hash,
 				number: block_number,
@@ -1072,8 +1072,8 @@ impl BlockChain {
 		let compressed_body = compress(&Self::block_to_body(block.raw()), blocks_swapper());
 
 		// store block in db
-		batch.put(db::COL_HEADERS, &hash, &compressed_header);
+		batch.put(db::COL_HEADERS, hash.as_bytes(), &compressed_header);
-		batch.put(db::COL_BODIES, &hash, &compressed_body);
+		batch.put(db::COL_BODIES, hash.as_bytes(), &compressed_body);
 
 		let info = self.block_info(&block.header_view(), route, &extras);
 
@@ -1172,7 +1172,7 @@ impl BlockChain {
 		{
 			let mut best_block = self.pending_best_block.write();
 			if is_best && update.info.location != BlockLocation::Branch {
-				batch.put(db::COL_EXTRA, b"best", &update.info.hash);
+				batch.put(db::COL_EXTRA, b"best", update.info.hash.as_bytes());
 				*best_block = Some(BestBlock {
 					total_difficulty: update.info.total_difficulty,
 					header: update.block.decode_header(),
@@ -1259,7 +1259,7 @@ impl BlockChain {
 			current: if self.is_known(&first) {
 				first
 			} else {
-				H256::default() // zero hash
+				H256::zero() // zero hash
 			},
 			chain: self
 		}
@@ -1571,6 +1571,7 @@ mod tests {
 	use keccak_hash::keccak;
 	use rustc_hex::FromHex;
 	use tempdir::TempDir;
+	use std::str::FromStr;
 
 	struct TestBlockChainDB {
 		_blooms_dir: TempDir,
@@ -1629,8 +1630,6 @@ mod tests {
 	}
 
 	fn insert_block_batch(batch: &mut DBTransaction, bc: &BlockChain, block: encoded::Block, receipts: Vec<Receipt>) -> ImportRoute {
-		use crate::ExtrasInsert;
-
 		let fork_choice = {
 			let header = block.header_view();
 			let parent_hash = header.parent_hash();
@@ -2057,7 +2056,7 @@ mod tests {
 	fn find_transaction_by_hash() {
 		let genesis = "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".from_hex().unwrap();
 		let b1 = "f904a8f901faa0ce1f26f798dd03c8782d63b3e42e79a64eaea5694ea686ac5d7ce3df5171d1aea01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347948888f1f195afa192cfee860698584c030f4c9db1a0a65c2364cd0f1542d761823dc0109c6b072f14c20459598c5455c274601438f4a070616ebd7ad2ed6fb7860cf7e9df00163842351c38a87cac2c1cb193895035a2a05c5b4fc43c2d45787f54e1ae7d27afdb4ad16dfc567c5692070d5c4556e0b1d7b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000830200000183023ec683021536845685109780a029f07836e4e59229b3a065913afc27702642c683bba689910b2b2fd45db310d3888957e6d004a31802f902a7f85f800a8255f094aaaf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca0575da4e21b66fa764be5f74da9389e67693d066fb0d1312e19e17e501da00ecda06baf5a5327595f6619dfc2fcb3f2e6fb410b5810af3cb52d0e7508038e91a188f85f010a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba04fa966bf34b93abc1bcd665554b7f316b50f928477b50be0f3285ead29d18c5ba017bba0eeec1625ab433746955e125d46d80b7fdc97386c51266f842d8e02192ef85f020a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca004377418ae981cc32b1312b4a427a1d69a821b28db8584f5f2bd8c6d42458adaa053a1dba1af177fac92f3b6af0a9fa46a22adf56e686c93794b6a012bf254abf5f85f030a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca04fe13febd28a05f4fcb2f451d7ddc2dda56486d9f8c79a62b0ba4da775122615a0651b2382dd402df9ebc27f8cb4b2e0f3cea68dda2dca0ee9603608f0b6f51668f85f040a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba078e6a0ba086a08f8450e208a399bb2f2d2a0d984acd2517c7c7df66ccfab567da013254002cd45a97fac049ae00afbc43ed0d9961d0c56a3b2382c80ce41c198ddf85f050a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba0a7174d8f43ea71c8e3ca9477691add8d80ac8e0ed89d8d8b572041eef81f4a54a0534ea2e28ec4da3b5b944b18c51ec84a5cf35f5b3343c5fb86521fd2d388f506f85f060a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba034bd04065833536a10c77ee2a43a5371bc6d34837088b861dd9d4b7f44074b59a078807715786a13876d3455716a6b9cb2186b7a4887a5c31160fc877454958616c0".from_hex().unwrap();
-		let b1_hash: H256 = "f53f268d23a71e85c7d6d83a9504298712b84c1a2ba220441c86eeda0bf0b6e3".into();
+		let b1_hash = H256::from_str("f53f268d23a71e85c7d6d83a9504298712b84c1a2ba220441c86eeda0bf0b6e3").unwrap();
 
 		let db = new_db();
 		let bc = new_chain(encoded::Block::new(genesis), db.clone());
@@ -2130,7 +2129,7 @@ mod tests {
 		let db = new_db();
 		let bc = new_chain(genesis.last().encoded(), db.clone());
 		insert_block(&db, &bc, b1.last().encoded(), vec![Receipt {
-			outcome: TransactionOutcome::StateRoot(H256::default()),
+			outcome: TransactionOutcome::StateRoot(H256::zero()),
 			gas_used: 10_000.into(),
 			log_bloom: Default::default(),
 			logs: vec![
@@ -2139,7 +2138,7 @@ mod tests {
 			],
 		},
 		Receipt {
-			outcome: TransactionOutcome::StateRoot(H256::default()),
+			outcome: TransactionOutcome::StateRoot(H256::zero()),
 			gas_used: 10_000.into(),
 			log_bloom: Default::default(),
 			logs: vec![
@@ -2148,7 +2147,7 @@ mod tests {
 		}]);
 		insert_block(&db, &bc, b2.last().encoded(), vec![
 			Receipt {
-				outcome: TransactionOutcome::StateRoot(H256::default()),
+				outcome: TransactionOutcome::StateRoot(H256::zero()),
 				gas_used: 10_000.into(),
 				log_bloom: Default::default(),
 				logs: vec![
@@ -2158,7 +2157,7 @@ mod tests {
 		]);
 		insert_block(&db, &bc, b3.last().encoded(), vec![
 			Receipt {
-				outcome: TransactionOutcome::StateRoot(H256::default()),
+				outcome: TransactionOutcome::StateRoot(H256::zero()),
 				gas_used: 10_000.into(),
 				log_bloom: Default::default(),
 				logs: vec![
@@ -2237,11 +2236,11 @@ mod tests {
 
 	#[test]
 	fn test_bloom_filter_simple() {
-		let bloom_b1: Bloom = "00000020000000000000000000000000000000000000000002000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000400000000000000000000002000".into();
+		let bloom_b1 = Bloom::from_str("00000020000000000000000000000000000000000000000002000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000400000000000000000000002000").unwrap();
 
-		let bloom_b2: Bloom = "00000000000000000000000000000000000000000000020000001000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
+		let bloom_b2 = Bloom::from_str("00000000000000000000000000000000000000000000020000001000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
 
-		let bloom_ba: Bloom = "00000000000000000000000000000000000000000000020000000800000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
+		let bloom_ba = Bloom::from_str("00000000000000000000000000000000000000000000020000000800000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
 
 		let genesis = BlockBuilder::genesis();
 		let b1 = genesis.add_block_with(|| BlockOptions {
@@ -2305,11 +2304,11 @@ mod tests {
 
 	#[test]
 	fn test_insert_unordered() {
-		let bloom_b1: Bloom = "00000020000000000000000000000000000000000000000002000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000400000000000000000000002000".into();
+		let bloom_b1 = Bloom::from_str("00000020000000000000000000000000000000000000000002000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000400000000000000000000002000").unwrap();
 
-		let bloom_b2: Bloom = "00000000000000000000000000000000000000000000020000001000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
+		let bloom_b2 = Bloom::from_str("00000000000000000000000000000000000000000000020000001000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
 
-		let bloom_b3: Bloom = "00000000000000000000000000000000000000000000020000000800000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
+		let bloom_b3 = Bloom::from_str("00000000000000000000000000000000000000000000020000000800000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
 
 		let genesis = BlockBuilder::genesis();
 		let b1 = genesis.add_block_with_bloom(bloom_b1);

ethcore/blockchain/src/import_route.rs

@@ -68,7 +68,7 @@ impl From<BlockInfo> for ImportRoute {
 
 #[cfg(test)]
 mod tests {
-	use ethereum_types::{H256, U256};
+	use ethereum_types::{U256, BigEndianHash};
 	use crate::block_info::{BlockInfo, BlockLocation, BranchBecomingCanonChainData};
 	use super::ImportRoute;
 
@@ -84,7 +84,7 @@ mod tests {
 	#[test]
 	fn import_route_branch() {
 		let info = BlockInfo {
-			hash: H256::from(U256::from(1)),
+			hash: BigEndianHash::from_uint(&U256::from(1)),
 			number: 0,
 			total_difficulty: U256::from(0),
 			location: BlockLocation::Branch,
@@ -93,14 +93,14 @@ mod tests {
 		assert_eq!(ImportRoute::from(info), ImportRoute {
 			retracted: vec![],
 			enacted: vec![],
-			omitted: vec![H256::from(U256::from(1))],
+			omitted: vec![BigEndianHash::from_uint(&U256::from(1))],
 		});
 	}
 
 	#[test]
 	fn import_route_canon_chain() {
 		let info = BlockInfo {
-			hash: H256::from(U256::from(1)),
+			hash: BigEndianHash::from_uint(&U256::from(1)),
 			number: 0,
 			total_difficulty: U256::from(0),
 			location: BlockLocation::CanonChain,
@@ -108,7 +108,7 @@ mod tests {
 
 		assert_eq!(ImportRoute::from(info), ImportRoute {
 			retracted: vec![],
-			enacted: vec![H256::from(U256::from(1))],
+			enacted: vec![BigEndianHash::from_uint(&U256::from(1))],
 			omitted: vec![],
 		});
 	}
@@ -116,19 +116,19 @@ mod tests {
 	#[test]
 	fn import_route_branch_becoming_canon_chain() {
 		let info = BlockInfo {
-			hash: H256::from(U256::from(2)),
+			hash: BigEndianHash::from_uint(&U256::from(2)),
 			number: 0,
 			total_difficulty: U256::from(0),
 			location: BlockLocation::BranchBecomingCanonChain(BranchBecomingCanonChainData {
-				ancestor: H256::from(U256::from(0)),
+				ancestor: BigEndianHash::from_uint(&U256::from(0)),
-				enacted: vec![H256::from(U256::from(1))],
+				enacted: vec![BigEndianHash::from_uint(&U256::from(1))],
-				retracted: vec![H256::from(U256::from(3)), H256::from(U256::from(4))],
+				retracted: vec![BigEndianHash::from_uint(&U256::from(3)), BigEndianHash::from_uint(&U256::from(4))],
 			})
 		};
 
 		assert_eq!(ImportRoute::from(info), ImportRoute {
-			retracted: vec![H256::from(U256::from(3)), H256::from(U256::from(4))],
+			retracted: vec![BigEndianHash::from_uint(&U256::from(3)), BigEndianHash::from_uint(&U256::from(4))],
-			enacted: vec![H256::from(U256::from(1)), H256::from(U256::from(2))],
+			enacted: vec![BigEndianHash::from_uint(&U256::from(1)), BigEndianHash::from_uint(&U256::from(2))],
 			omitted: vec![],
 		});
 	}

ethcore/call-contract/Cargo.toml

@@ -7,5 +7,5 @@ edition = "2018"
 
 [dependencies]
 types = { path = "../types", package = "common-types" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 bytes = { version = "0.1", package = "parity-bytes" }

ethcore/db/Cargo.toml

@@ -9,9 +9,9 @@ edition = "2018"
 
 [dependencies]
 common-types = { path = "../types" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 heapsize = "0.4"
 kvdb = "0.1"
 parking_lot = "0.7"
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 rlp_derive = { path = "../../util/rlp-derive" }

ethcore/db/src/db.rs

@@ -16,7 +16,7 @@
 
 //! Database utilities and definitions.
 
-use std::ops::Deref;
+use std::convert::AsRef;
 use std::hash::Hash;
 use std::collections::HashMap;
 use parking_lot::RwLock;
@@ -82,7 +82,7 @@ impl<K, V> Cache<K, V> for HashMap<K, V> where K: Hash + Eq {
 /// Should be used to get database key associated with given value.
 pub trait Key<T> {
 	/// The db key associated with this value.
-	type Target: Deref<Target = [u8]>;
+	type Target: AsRef<[u8]>;
 
 	/// Returns db key.
 	fn key(&self) -> Self::Target;
@@ -91,16 +91,16 @@ pub trait Key<T> {
 /// Should be used to write value into database.
 pub trait Writable {
 	/// Writes the value into the database.
-	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: Deref<Target = [u8]>;
+	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: AsRef<[u8]>;
 
 	/// Deletes key from the databse.
-	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: Deref<Target = [u8]>;
+	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: AsRef<[u8]>;
 
 	/// Writes the value into the database and updates the cache.
 	fn write_with_cache<K, T, R>(&mut self, col: Option<u32>, cache: &mut Cache<K, T>, key: K, value: T, policy: CacheUpdatePolicy) where
 	K: Key<T, Target = R> + Hash + Eq,
 	T: rlp::Encodable,
-	R: Deref<Target = [u8]> {
+	R: AsRef<[u8]> {
 		self.write(col, &key, &value);
 		match policy {
 			CacheUpdatePolicy::Overwrite => {
@@ -116,7 +116,7 @@ pub trait Writable {
 	fn extend_with_cache<K, T, R>(&mut self, col: Option<u32>, cache: &mut Cache<K, T>, values: HashMap<K, T>, policy: CacheUpdatePolicy) where
 	K: Key<T, Target = R> + Hash + Eq,
 	T: rlp::Encodable,
-	R: Deref<Target = [u8]> {
+	R: AsRef<[u8]> {
 		match policy {
 			CacheUpdatePolicy::Overwrite => {
 				for (key, value) in values {
@@ -137,7 +137,7 @@ pub trait Writable {
 	fn extend_with_option_cache<K, T, R>(&mut self, col: Option<u32>, cache: &mut Cache<K, Option<T>>, values: HashMap<K, Option<T>>, policy: CacheUpdatePolicy) where
 	K: Key<T, Target = R> + Hash + Eq,
 	T: rlp::Encodable,
-	R: Deref<Target = [u8]> {
+	R: AsRef<[u8]> {
 		match policy {
 			CacheUpdatePolicy::Overwrite => {
 				for (key, value) in values {
@@ -167,7 +167,7 @@ pub trait Readable {
 	/// Returns value for given key.
 	fn read<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> Option<T> where
 	T: rlp::Decodable,
-	R: Deref<Target = [u8]>;
+	R: AsRef<[u8]>;
 
 	/// Returns value for given key either in cache or in database.
 	fn read_with_cache<K, T, C>(&self, col: Option<u32>, cache: &RwLock<C>, key: &K) -> Option<T> where
@@ -189,12 +189,12 @@ pub trait Readable {
 	}
 
 	/// Returns true if given value exists.
-	fn exists<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> bool where R: Deref<Target= [u8]>;
+	fn exists<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> bool where R: AsRef<[u8]>;
 
 	/// Returns true if given value exists either in cache or in database.
 	fn exists_with_cache<K, T, R, C>(&self, col: Option<u32>, cache: &RwLock<C>, key: &K) -> bool where
 	K: Eq + Hash + Key<T, Target = R>,
-	R: Deref<Target = [u8]>,
+	R: AsRef<[u8]>,
 	C: Cache<K, T> {
 		{
 			let read = cache.read();
@@ -208,31 +208,31 @@ pub trait Readable {
 }
 
 impl Writable for DBTransaction {
-	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: Deref<Target = [u8]> {
+	fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>, value: &T) where T: rlp::Encodable, R: AsRef<[u8]> {
-		self.put(col, &key.key(), &rlp::encode(value));
+		self.put(col, key.key().as_ref(), &rlp::encode(value));
 	}
 
-	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: Deref<Target = [u8]> {
+	fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target = R>) where T: rlp::Encodable, R: AsRef<[u8]> {
-		self.delete(col, &key.key());
+		self.delete(col, key.key().as_ref());
 	}
 }
 
 impl<KVDB: KeyValueDB + ?Sized> Readable for KVDB {
 	fn read<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> Option<T>
-		where T: rlp::Decodable, R: Deref<Target = [u8]> {
+		where T: rlp::Decodable, R: AsRef<[u8]> {
-		self.get(col, &key.key())
+		self.get(col, key.key().as_ref())
-			.expect(&format!("db get failed, key: {:?}", &key.key() as &[u8]))
+			.expect(&format!("db get failed, key: {:?}", key.key().as_ref()))
 			.map(|v| rlp::decode(&v).expect("decode db value failed") )
 
 	}
 
-	fn exists<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> bool where R: Deref<Target = [u8]> {
+	fn exists<T, R>(&self, col: Option<u32>, key: &Key<T, Target = R>) -> bool where R: AsRef<[u8]> {
-		let result = self.get(col, &key.key());
+		let result = self.get(col, key.key().as_ref());
 
 		match result {
 			Ok(v) => v.is_some(),
 			Err(err) => {
-				panic!("db get failed, key: {:?}, err: {:?}", &key.key() as &[u8], err);
+				panic!("db get failed, key: {:?}, err: {:?}", key.key().as_ref(), err);
 			}
 		}
 	}

ethcore/db/src/keys.rs

@@ -17,7 +17,7 @@
 //! Blockchain DB extras.
 
 use std::io::Write;
-use std::ops;
+use std::convert::AsRef;
 
 use common_types::BlockNumber;
 use common_types::engines::epoch::Transition as EpochTransition;
@@ -49,19 +49,17 @@ pub enum ExtrasIndex {
 
 fn with_index(hash: &H256, i: ExtrasIndex) -> H264 {
 	let mut result = H264::default();
-	result[0] = i as u8;
+	result.as_bytes_mut()[0] = i as u8;
-	(*result)[1..].clone_from_slice(hash);
+	result.as_bytes_mut()[1..].clone_from_slice(hash.as_bytes());
 	result
 }
 
 /// Wrapper for block number used as a DB key.
 pub struct BlockNumberKey([u8; 5]);
 
-impl ops::Deref for BlockNumberKey {
+impl AsRef<[u8]> for BlockNumberKey {
-	type Target = [u8];
+	fn as_ref(&self) -> &[u8] {
-
+		&self.0[..]
-	fn deref(&self) -> &Self::Target {
-		&self.0
 	}
 }
 
@@ -123,10 +121,8 @@ pub const EPOCH_KEY_PREFIX: &'static [u8; DB_PREFIX_LEN] = &[
 /// Epoch transitions key
 pub struct EpochTransitionsKey([u8; EPOCH_KEY_LEN]);
 
-impl ops::Deref for EpochTransitionsKey {
+impl AsRef<[u8]> for EpochTransitionsKey {
-	type Target = [u8];
+	fn as_ref(&self) -> &[u8] { &self.0[..] }
-
-	fn deref(&self) -> &[u8] { &self.0[..] }
 }
 
 impl Key<EpochTransitions> for u64 {

ethcore/evm/Cargo.toml

@@ -6,15 +6,14 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 bit-set = "0.4"
 parity-bytes = "0.1"
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 heapsize = "0.4"
 lazy_static = "1.0"
 log = "0.4"
 vm = { path = "../vm" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 parking_lot = "0.7"
 memory-cache = { path = "../../util/memory-cache" }
-num-bigint = "0.2"
 
 [dev-dependencies]
 rustc-hex = "1.0"

ethcore/evm/src/interpreter/gasometer.rs

@@ -15,7 +15,7 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::cmp;
-use ethereum_types::{U256, H256};
+use ethereum_types::{BigEndianHash, U256};
 use super::u256_to_address;
 
 use {evm, vm};
@@ -121,12 +121,12 @@ impl<Gas: evm::CostType> Gasometer<Gas> {
 				Request::Gas(Gas::from(1))
 			},
 			instructions::SSTORE => {
-				let address = H256::from(stack.peek(0));
+				let address = BigEndianHash::from_uint(stack.peek(0));
 				let newval = stack.peek(1);
-				let val = U256::from(&*ext.storage_at(&address)?);
+				let val = ext.storage_at(&address)?.into_uint();
 
 				let gas = if schedule.eip1283 {
-					let orig = U256::from(&*ext.initial_storage_at(&address)?);
+					let orig = ext.initial_storage_at(&address)?.into_uint();
 					calculate_eip1283_sstore_gas(schedule, &orig, &val, &newval)
 				} else {
 					if val.is_zero() && !newval.is_zero() {

ethcore/evm/src/interpreter/mod.rs

@@ -26,10 +26,11 @@ mod shared_cache;
 use std::marker::PhantomData;
 use std::{cmp, mem};
 use std::sync::Arc;
+use std::convert::TryFrom;
 use hash::keccak;
 use bytes::Bytes;
-use ethereum_types::{U256, H256, Address};
+use ethereum_types::{U256, U512, H256, Address, BigEndianHash};
-use num_bigint::BigUint;
+
 
 use vm::{
 	self, ActionParams, ParamsType, ActionValue, CallType, MessageCallResult,
@@ -62,17 +63,6 @@ const TWO_POW_96: U256 = U256([0, 0x100000000, 0, 0]); //0x1 00000000 00000000 0
 const TWO_POW_224: U256 = U256([0, 0, 0, 0x100000000]); //0x1 00000000 00000000 00000000 00000000 00000000 00000000 00000000
 const TWO_POW_248: U256 = U256([0, 0, 0, 0x100000000000000]); //0x1 00000000 00000000 00000000 00000000 00000000 00000000 00000000 000000
 
-fn to_biguint(x: U256) -> BigUint {
-	let mut bytes = [0u8; 32];
-	x.to_little_endian(&mut bytes);
-	BigUint::from_bytes_le(&bytes)
-}
-
-fn from_biguint(x: BigUint) -> U256 {
-	let bytes = x.to_bytes_le();
-	U256::from_little_endian(&bytes)
-}
-
 /// Abstraction over raw vector of Bytes. Easier state management of PC.
 struct CodeReader {
 	position: ProgramCounter,
@@ -520,7 +510,7 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let init_size = self.stack.pop_back();
 				let address_scheme = match instruction {
 					instructions::CREATE => CreateContractAddress::FromSenderAndNonce,
-					instructions::CREATE2 => CreateContractAddress::FromSenderSaltAndCodeHash(self.stack.pop_back().into()),
+					instructions::CREATE2 => CreateContractAddress::FromSenderSaltAndCodeHash(BigEndianHash::from_uint(&self.stack.pop_back())),
 					_ => unreachable!("instruction can only be CREATE/CREATE2 checked above; qed"),
 				};
 
@@ -677,7 +667,7 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let size = self.stack.pop_back();
 				let topics = self.stack.pop_n(no_of_topics)
 					.iter()
-					.map(H256::from)
+					.map(BigEndianHash::from_uint)
 					.collect();
 				ext.log(topics, self.mem.read_slice(offset, size))?;
 			},
@@ -714,21 +704,21 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let offset = self.stack.pop_back();
 				let size = self.stack.pop_back();
 				let k = keccak(self.mem.read_slice(offset, size));
-				self.stack.push(U256::from(&*k));
+				self.stack.push(k.into_uint());
 			},
 			instructions::SLOAD => {
-				let key = H256::from(&self.stack.pop_back());
+				let key = BigEndianHash::from_uint(&self.stack.pop_back());
-				let word = U256::from(&*ext.storage_at(&key)?);
+				let word = ext.storage_at(&key)?.into_uint();
 				self.stack.push(word);
 			},
 			instructions::SSTORE => {
-				let address = H256::from(&self.stack.pop_back());
+				let address = BigEndianHash::from_uint(&self.stack.pop_back());
 				let val = self.stack.pop_back();
 
-				let current_val = U256::from(&*ext.storage_at(&address)?);
+				let current_val = ext.storage_at(&address)?.into_uint();
 				// Increase refund for clear
 				if ext.schedule().eip1283 {
-					let original_val = U256::from(&*ext.initial_storage_at(&address)?);
+					let original_val = ext.initial_storage_at(&address)?.into_uint();
 					gasometer::handle_eip1283_sstore_clears_refund(ext, &original_val, &current_val, &val);
 				} else {
 					if !current_val.is_zero() && val.is_zero() {
@@ -736,7 +726,7 @@ impl<Cost: CostType> Interpreter<Cost> {
 						ext.add_sstore_refund(sstore_clears_schedule);
 					}
 				}
-				ext.set_storage(address, H256::from(&val))?;
+				ext.set_storage(address, BigEndianHash::from_uint(&val))?;
 			},
 			instructions::PC => {
 				self.stack.push(U256::from(self.reader.position - 1));
@@ -797,7 +787,7 @@ impl<Cost: CostType> Interpreter<Cost> {
 			instructions::EXTCODEHASH => {
 				let address = u256_to_address(&self.stack.pop_back());
 				let hash = ext.extcodehash(&address)?.unwrap_or_else(H256::zero);
-				self.stack.push(U256::from(hash));
+				self.stack.push(hash.into_uint());
 			},
 			instructions::CALLDATACOPY => {
 				Self::copy_data_to_memory(&mut self.mem, &mut self.stack, &self.params.data.as_ref().map_or_else(|| &[] as &[u8], |d| &*d as &[u8]));
@@ -831,7 +821,7 @@ impl<Cost: CostType> Interpreter<Cost> {
 			instructions::BLOCKHASH => {
 				let block_number = self.stack.pop_back();
 				let block_hash = ext.blockhash(&block_number);
-				self.stack.push(U256::from(&*block_hash));
+				self.stack.push(block_hash.into_uint());
 			},
 			instructions::COINBASE => {
 				self.stack.push(address_to_u256(ext.env_info().author.clone()));
@@ -1021,12 +1011,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let c = self.stack.pop_back();
 
 				self.stack.push(if !c.is_zero() {
-					let a_num = to_biguint(a);
+					let a_512 = U512::from(a);
-					let b_num = to_biguint(b);
+					let b_512 = U512::from(b);
-					let c_num = to_biguint(c);
+					let c_512 = U512::from(c);
-					let res = a_num + b_num;
+					let res = a_512 + b_512;
-					let x = res % c_num;
+					let x = res % c_512;
-					from_biguint(x)
+					U256::try_from(x).expect("U512 % U256 fits U256; qed")
 				} else {
 					U256::zero()
 				});
@@ -1037,12 +1027,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 				let c = self.stack.pop_back();
 
 				self.stack.push(if !c.is_zero() {
-					let a_num = to_biguint(a);
+					let a_512 = U512::from(a);
-					let b_num = to_biguint(b);
+					let b_512 = U512::from(b);
-					let c_num = to_biguint(c);
+					let c_512 = U512::from(c);
-					let res = a_num * b_num;
+					let res = a_512 * b_512;
-					let x = res % c_num;
+					let x = res % c_512;
-					from_biguint(x)
+					U256::try_from(x).expect("U512 % U256 fits U256; qed")
 				} else {
 					U256::zero()
 				});
@@ -1182,12 +1172,13 @@ fn set_sign(value: U256, sign: bool) -> U256 {
 
 #[inline]
 fn u256_to_address(value: &U256) -> Address {
-	Address::from(H256::from(value))
+	let addr: H256 = BigEndianHash::from_uint(value);
+	Address::from(addr)
 }
 
 #[inline]
 fn address_to_u256(value: Address) -> U256 {
-	U256::from(&*H256::from(value))
+	H256::from(value).into_uint()
 }
 
 #[cfg(test)]
@@ -1198,6 +1189,7 @@ mod tests {
 	use factory::Factory;
 	use vm::{self, Exec, ActionParams, ActionValue};
 	use vm::tests::{FakeExt, test_finalize};
+	use ethereum_types::Address;
 
 	fn interpreter(params: ActionParams, ext: &vm::Ext) -> Box<Exec> {
 		Factory::new(VMType::Interpreter, 1).create(params, ext.schedule(), ext.depth())
@@ -1208,13 +1200,13 @@ mod tests {
 		let code = "7feeffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff006000527faaffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffaa6020526000620f120660406000601773945304eb96065b2a98b57a48a06ae28d285a71b56101f4f1600055".from_hex().unwrap();
 
 		let mut params = ActionParams::default();
-		params.address = 5.into();
+		params.address = Address::from_low_u64_be(5);
 		params.gas = 300_000.into();
 		params.gas_price = 1.into();
 		params.value = ActionValue::Transfer(100_000.into());
 		params.code = Some(Arc::new(code));
 		let mut ext = FakeExt::new();
-		ext.balances.insert(5.into(), 1_000_000_000.into());
+		ext.balances.insert(Address::from_low_u64_be(5), 1_000_000_000.into());
 		ext.tracing = true;
 
 		let gas_left = {
@@ -1231,12 +1223,12 @@ mod tests {
 		let code = "6001600160000360003e00".from_hex().unwrap();
 
 		let mut params = ActionParams::default();
-		params.address = 5.into();
+		params.address = Address::from_low_u64_be(5);
 		params.gas = 300_000.into();
 		params.gas_price = 1.into();
 		params.code = Some(Arc::new(code));
 		let mut ext = FakeExt::new_byzantium();
-		ext.balances.insert(5.into(), 1_000_000_000.into());
+		ext.balances.insert(Address::from_low_u64_be(5), 1_000_000_000.into());
 		ext.tracing = true;
 
 		let err = {

ethcore/evm/src/lib.rs

@@ -24,7 +24,6 @@ extern crate vm;
 extern crate keccak_hash as hash;
 extern crate memory_cache;
 extern crate parity_bytes as bytes;
-extern crate num_bigint;
 
 #[macro_use]
 extern crate lazy_static;

ethcore/evm/src/tests.rs

@@ -239,7 +239,7 @@ fn test_blockhash(factory: super::Factory) {
 	};
 
 	assert_eq!(gas_left, U256::from(79_974));
-	assert_eq!(ext.store.get(&H256::new()).unwrap(), &blockhash);
+	assert_eq!(ext.store.get(&H256::zero()).unwrap(), &blockhash);
 }
 
 evm_test!{test_calldataload: test_calldataload_int}
@@ -726,8 +726,8 @@ evm_test!{test_calls: test_calls_int}
 fn test_calls(factory: super::Factory) {
 	let code = "600054602d57600160005560006000600060006050610998610100f160006000600060006050610998610100f25b".from_hex().unwrap();
 
-	let address = Address::from(0x155);
+	let address = Address::from_low_u64_be(0x155);
-	let code_address = Address::from(0x998);
+	let code_address = Address::from_low_u64_be(0x998);
 	let mut params = ActionParams::default();
 	params.gas = U256::from(150_000);
 	params.code = Some(Arc::new(code));
@@ -772,7 +772,7 @@ evm_test!{test_create_in_staticcall: test_create_in_staticcall_int}
 fn test_create_in_staticcall(factory: super::Factory) {
 	let code = "600060006064f000".from_hex().unwrap();
 
-	let address = Address::from(0x155);
+	let address = Address::from_low_u64_be(0x155);
 	let mut params = ActionParams::default();
 	params.gas = U256::from(100_000);
 	params.code = Some(Arc::new(code));
@@ -1066,5 +1066,5 @@ fn assert_set_contains<T : Debug + Eq + PartialEq + Hash>(set: &HashSet<T>, val:
 }
 
 fn assert_store(ext: &FakeExt, pos: u64, val: &str) {
-	assert_eq!(ext.store.get(&H256::from(pos)).unwrap(), &H256::from_str(val).unwrap());
+	assert_eq!(ext.store.get(&H256::from_low_u64_be(pos)).unwrap(), &H256::from_str(val).unwrap());
 }

ethcore/light/Cargo.toml

@@ -13,7 +13,7 @@ common-types = { path = "../types" }
 ethcore = { path = ".."}
 ethcore-db = { path = "../db" }
 ethcore-blockchain = { path = "../blockchain" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 memory-db = "0.11.0"
 trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../../util/patricia-trie-ethereum" }
@@ -25,18 +25,18 @@ heapsize = "0.4"
 vm = { path = "../vm" }
 fastmap = { path = "../../util/fastmap" }
 failsafe = { version = "0.3.0", default-features = false, features = ["parking_lot_mutex"] }
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 rlp_derive = { path = "../../util/rlp-derive" }
 smallvec = "0.6"
 futures = "0.1"
-rand = "0.4"
+rand = "0.6"
 itertools = "0.5"
 bincode = "0.8.0"
 serde = "1.0"
 serde_derive = "1.0"
 parking_lot = "0.7"
 stats = { path = "../../util/stats" }
-keccak-hash = "0.1"
+keccak-hash = "0.2.0"
 keccak-hasher = { path = "../../util/keccak-hasher" }
 triehash-ethereum = { version = "0.2",  path = "../../util/triehash-ethereum" }
 kvdb = "0.1"

ethcore/light/src/cht.rs

@@ -104,7 +104,7 @@ pub fn build<F>(cht_num: u64, mut fetcher: F) -> Option<CHT<MemoryDB<KeccakHashe
 	let last_num = start_number(cht_num + 1) - 1;
 	let mut id = BlockId::Number(last_num);
 
-	let mut root = H256::default();
+	let mut root = H256::zero();
 
 	{
 		let mut t = TrieDBMut::new(&mut db, &mut root);

ethcore/light/src/client/header_chain.rs

@@ -154,8 +154,11 @@ fn pending_transition_key(block_hash: H256) -> H264 {
 
 	let mut key = H264::default();
 
-	key[0] = LEADING;
+	{
-	key.0[1..].copy_from_slice(&block_hash.0[..]);
+		let bytes = key.as_bytes_mut();
+		bytes[0] = LEADING;
+		bytes[1..].copy_from_slice(block_hash.as_bytes());
+	}
 
 	key
 }
@@ -165,8 +168,11 @@ fn transition_key(block_hash: H256) -> H264 {
 
 	let mut key = H264::default();
 
-	key[0] = LEADING;
+	{
-	key.0[1..].copy_from_slice(&block_hash.0[..]);
+		let bytes = key.as_bytes_mut();
+		bytes[0] = LEADING;
+		bytes[1..].copy_from_slice(block_hash.as_bytes());
+	}
 
 	key
 }
@@ -237,7 +243,7 @@ impl HeaderChain {
 				for c in &entry.candidates {
 					let key = transition_key(c.hash);
 
-					if let Some(proof) = db.get(col, &*key)? {
+					if let Some(proof) = db.get(col, key.as_bytes())? {
 						live_epoch_proofs.insert(c.hash, EpochTransition {
 							block_hash: c.hash,
 							block_number: cur_number,
@@ -431,7 +437,7 @@ impl HeaderChain {
 		}
 
 		if let Some(transition) = transition {
-			transaction.put(self.col, &*transition_key(hash), &transition.proof);
+			transaction.put(self.col, transition_key(hash).as_bytes(), &transition.proof);
 			self.live_epoch_proofs.write().insert(hash, transition);
 		}
 
@@ -508,10 +514,10 @@ impl HeaderChain {
 						for ancient in &era_entry.candidates {
 							let maybe_transition = live_epoch_proofs.remove(&ancient.hash);
 							if let Some(epoch_transition) = maybe_transition {
-								transaction.delete(self.col, &*transition_key(ancient.hash));
+								transaction.delete(self.col, transition_key(ancient.hash).as_bytes());
 
 								if ancient.hash == era_entry.canonical_hash {
-									last_canonical_transition = match self.db.get(self.col, &ancient.hash) {
+									last_canonical_transition = match self.db.get(self.col, ancient.hash.as_bytes()) {
 										Err(e) => {
 											warn!(target: "chain", "Error reading from DB: {}\n
 												", e);
@@ -526,7 +532,7 @@ impl HeaderChain {
 								}
 							}
 
-							transaction.delete(self.col, &ancient.hash);
+							transaction.delete(self.col, ancient.hash.as_bytes());
 						}
 
 						let canon = &era_entry.candidates[0];
@@ -647,7 +653,7 @@ impl HeaderChain {
 			match cache.block_header(&hash) {
 				Some(header) => Some(header),
 				None => {
-					match self.db.get(self.col, &hash) {
+					match self.db.get(self.col, hash.as_bytes()) {
 						Ok(db_value) => {
 							db_value.map(|x| x.into_vec()).map(encoded::Header::new)
 								.and_then(|header| {
@@ -772,7 +778,7 @@ impl HeaderChain {
 
 	/// Get block status.
 	pub fn status(&self, hash: &H256) -> BlockStatus {
-		if self.db.get(self.col, hash).ok().map_or(false, |x| x.is_some()) {
+		if self.db.get(self.col, hash.as_bytes()).ok().map_or(false, |x| x.is_some()) {
 			BlockStatus::InChain
 		} else {
 			BlockStatus::Unknown
@@ -782,13 +788,13 @@ impl HeaderChain {
 	/// Insert a pending transition.
 	pub fn insert_pending_transition(&self, batch: &mut DBTransaction, hash: H256, t: &PendingEpochTransition) {
 		let key = pending_transition_key(hash);
-		batch.put(self.col, &*key, &*::rlp::encode(t));
+		batch.put(self.col, key.as_bytes(), &*::rlp::encode(t));
 	}
 
 	/// Get pending transition for a specific block hash.
 	pub fn pending_transition(&self, hash: H256) -> Option<PendingEpochTransition> {
 		let key = pending_transition_key(hash);
-		match self.db.get(self.col, &*key) {
+		match self.db.get(self.col, key.as_bytes()) {
 			Ok(db_fetch) => db_fetch.map(|bytes| ::rlp::decode(&bytes).expect("decoding value from db failed")),
 			Err(e) => {
 				warn!(target: "chain", "Error reading from database: {}", e);

ethcore/light/src/net/status.rs

@@ -382,7 +382,7 @@ mod tests {
 			protocol_version: 1,
 			network_id: 1,
 			head_td: U256::default(),
-			head_hash: H256::default(),
+			head_hash: H256::zero(),
 			head_num: 10,
 			genesis_hash: H256::zero(),
 			last_head: None,
@@ -417,7 +417,7 @@ mod tests {
 			protocol_version: 1,
 			network_id: 1,
 			head_td: U256::default(),
-			head_hash: H256::default(),
+			head_hash: H256::zero(),
 			head_num: 10,
 			genesis_hash: H256::zero(),
 			last_head: None,
@@ -452,7 +452,7 @@ mod tests {
 			protocol_version: 1,
 			network_id: 1,
 			head_td: U256::default(),
-			head_hash: H256::default(),
+			head_hash: H256::zero(),
 			head_num: 10,
 			genesis_hash: H256::zero(),
 			last_head: None,
@@ -550,7 +550,7 @@ mod tests {
 			protocol_version: 1,
 			network_id: 1,
 			head_td: U256::default(),
-			head_hash: H256::default(),
+			head_hash: H256::zero(),
 			head_num: 10,
 			genesis_hash: H256::zero(),
 			last_head: None,

ethcore/light/src/net/tests/mod.rs

@@ -22,7 +22,7 @@ use common_types::encoded;
 use common_types::ids::BlockId;
 use common_types::transaction::{Action, PendingTransaction};
 use ethcore::client::{EachBlockWith, TestBlockChainClient};
-use ethereum_types::{H256, U256, Address};
+use ethereum_types::{H256, U256, Address, BigEndianHash};
 use net::context::IoContext;
 use net::load_timer::MOVING_SAMPLE_SIZE;
 use net::status::{Capabilities, Status};
@@ -158,7 +158,7 @@ impl Provider for TestProvider {
 
 	fn contract_code(&self, req: request::CompleteCodeRequest) -> Option<request::CodeResponse> {
 		Some(CodeResponse {
-			code: req.block_hash.iter().chain(req.code_hash.iter()).cloned().collect(),
+			code: req.block_hash.as_bytes().iter().chain(req.code_hash.as_bytes().iter()).cloned().collect(),
 		})
 	}
 
@@ -261,7 +261,7 @@ fn genesis_mismatch() {
 	let (provider, proto) = setup(capabilities);
 
 	let mut status = status(provider.client.chain_info());
-	status.genesis_hash = H256::default();
+	status.genesis_hash = H256::zero();
 
 	let packet_body = write_handshake(&status, &capabilities, &proto);
 
@@ -472,16 +472,16 @@ fn get_state_proofs() {
 	}
 
 	let req_id = 112;
-	let key1: H256 = U256::from(11223344).into();
+	let key1: H256 = BigEndianHash::from_uint(&U256::from(11223344));
-	let key2: H256 = U256::from(99988887).into();
+	let key2: H256 = BigEndianHash::from_uint(&U256::from(99988887));
 
 	let mut builder = Builder::default();
 	builder.push(Request::Account(IncompleteAccountRequest {
-		block_hash: H256::default().into(),
+		block_hash: H256::zero().into(),
 		address_hash: key1.into(),
 	})).unwrap();
 	builder.push(Request::Storage(IncompleteStorageRequest {
-		block_hash: H256::default().into(),
+		block_hash: H256::zero().into(),
 		address_hash: key1.into(),
 		key_hash: key2.into(),
 	})).unwrap();
@@ -492,11 +492,11 @@ fn get_state_proofs() {
 	let response = {
 		let responses = vec![
 			Response::Account(provider.account_proof(CompleteAccountRequest {
-				block_hash: H256::default(),
+				block_hash: H256::zero(),
 				address_hash: key1,
 			}).unwrap()),
 			Response::Storage(provider.storage_proof(CompleteStorageRequest {
-				block_hash: H256::default(),
+				block_hash: H256::zero(),
 				address_hash: key1,
 				key_hash: key2,
 			}).unwrap()),
@@ -529,8 +529,8 @@ fn get_contract_code() {
 	}
 
 	let req_id = 112;
-	let key1: H256 = U256::from(11223344).into();
+	let key1: H256 = BigEndianHash::from_uint(&U256::from(11223344));
-	let key2: H256 = U256::from(99988887).into();
+	let key2: H256 = BigEndianHash::from_uint(&U256::from(99988887));
 
 	let request = Request::Code(IncompleteCodeRequest {
 		block_hash: key1.into(),
@@ -541,7 +541,7 @@ fn get_contract_code() {
 	let request_body = make_packet(req_id, &requests);
 	let response = {
 		let response = vec![Response::Code(CodeResponse {
-			code: key1.iter().chain(key2.iter()).cloned().collect(),
+			code: key1.as_bytes().iter().chain(key2.as_bytes().iter()).cloned().collect(),
 		})];
 
 		let new_creds = *flow_params.limit() - flow_params.compute_cost_multi(requests.requests()).unwrap();
@@ -616,9 +616,9 @@ fn proof_of_execution() {
 
 	let req_id = 112;
 	let mut request = Request::Execution(request::IncompleteExecutionRequest {
-		block_hash: H256::default().into(),
+		block_hash: H256::zero().into(),
-		from: Address::default(),
+		from: Address::zero(),
-		action: Action::Call(Address::default()),
+		action: Action::Call(Address::zero()),
 		gas: 100.into(),
 		gas_price: 0.into(),
 		value: 0.into(),
@@ -755,7 +755,7 @@ fn get_transaction_index() {
 	}
 
 	let req_id = 112;
-	let key1: H256 = U256::from(11223344).into();
+	let key1: H256 = BigEndianHash::from_uint(&U256::from(11223344));
 
 	let request = Request::TransactionIndex(IncompleteTransactionIndexRequest {
 		hash: key1.into(),

ethcore/light/src/on_demand/request.rs

@@ -983,7 +983,7 @@ impl Account {
 		let mut db = journaldb::new_memory_db();
 		for node in proof { db.insert(&node[..]); }
 
-		match TrieDB::new(&db, &state_root).and_then(|t| t.get(&keccak(&self.address)))? {
+		match TrieDB::new(&db, &state_root).and_then(|t| t.get(keccak(&self.address).as_bytes()))? {
 			Some(val) => {
 				let rlp = Rlp::new(&val);
 				Ok(Some(BasicAccount {
@@ -1162,7 +1162,7 @@ mod tests {
 
 	#[test]
 	fn check_header_with_ancestors() {
-		let mut last_header_hash = H256::default();
+		let mut last_header_hash = H256::zero();
 		let mut headers = (0..11).map(|num| {
 			let mut header = Header::new();
 			header.set_number(num);
@@ -1278,7 +1278,7 @@ mod tests {
 	fn check_state_proof() {
 		use rlp::RlpStream;
 
-		let mut root = H256::default();
+		let mut root = H256::zero();
 		let mut db = journaldb::new_memory_db();
 		let mut header = Header::new();
 		header.set_number(123_456);
@@ -1298,17 +1298,17 @@ mod tests {
 			let mut trie = SecTrieDBMut::new(&mut db, &mut root);
 			for _ in 0..100 {
 				let address = Address::random();
-				trie.insert(&*address, &rand_acc()).unwrap();
+				trie.insert(address.as_bytes(), &rand_acc()).unwrap();
 			}
 
-			trie.insert(&*addr, &rand_acc()).unwrap();
+			trie.insert(addr.as_bytes(), &rand_acc()).unwrap();
 		}
 
 		let proof = {
 			let trie = SecTrieDB::new(&db, &root).unwrap();
 			let mut recorder = Recorder::new();
 
-			trie.get_with(&*addr, &mut recorder).unwrap().unwrap();
+			trie.get_with(addr.as_bytes(), &mut recorder).unwrap().unwrap();
 
 			recorder.drain().into_iter().map(|r| r.data).collect::<Vec<_>>()
 		};

ethcore/light/src/on_demand/tests.rs

@@ -117,9 +117,9 @@ fn dummy_status() -> Status {
 		protocol_version: 1,
 		network_id: 999,
 		head_td: 1.into(),
-		head_hash: H256::default(),
+		head_hash: H256::zero(),
 		head_num: 1359,
-		genesis_hash: H256::default(),
+		genesis_hash: H256::zero(),
 		last_head: None,
 	}
 }
@@ -138,7 +138,7 @@ fn detects_hangup() {
 	let on_demand = Harness::create().service;
 	let result = on_demand.request_raw(
 		&Context::NoOp,
-		vec![request::HeaderByHash(H256::default().into()).into()],
+		vec![request::HeaderByHash(H256::zero().into()).into()],
 	);
 
 	assert_eq!(on_demand.pending.read().len(), 1);
@@ -199,7 +199,7 @@ fn no_capabilities() {
 
 	let _recv = harness.service.request_raw(
 		&Context::NoOp,
-		vec![request::HeaderByHash(H256::default().into()).into()]
+		vec![request::HeaderByHash(H256::zero().into()).into()]
 	).unwrap();
 
 	assert_eq!(harness.service.pending.read().len(), 1);
@@ -395,7 +395,7 @@ fn wrong_kind() {
 
 	let _recv = harness.service.request_raw(
 		&Context::NoOp,
-		vec![request::HeaderByHash(H256::default().into()).into()]
+		vec![request::HeaderByHash(H256::zero().into()).into()]
 	).unwrap();
 
 	assert_eq!(harness.service.pending.read().len(), 1);

ethcore/light/src/transaction_queue.rs

@@ -395,7 +395,7 @@ mod tests {
 
 	#[test]
 	fn queued_senders() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 		let tx = Transaction::default().fake_sign(sender);
 
@@ -411,7 +411,7 @@ mod tests {
 
 	#[test]
 	fn next_nonce() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		for i in (0..5).chain(10..15) {
@@ -442,7 +442,7 @@ mod tests {
 
 	#[test]
 	fn current_to_future() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		for i in 5..10 {
@@ -485,7 +485,7 @@ mod tests {
 	#[test]
 	fn conditional() {
 		let mut txq = TransactionQueue::default();
-		let sender = Address::default();
+		let sender = Address::zero();
 
 		for i in 0..5 {
 			let mut tx = Transaction::default();
@@ -507,7 +507,7 @@ mod tests {
 
 	#[test]
 	fn cull_from_future() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		for i in (0..1).chain(3..10) {
@@ -527,7 +527,7 @@ mod tests {
 
 	#[test]
 	fn import_old() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		let mut tx_a = Transaction::default();
@@ -544,7 +544,7 @@ mod tests {
 
 	#[test]
 	fn replace_is_removed() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		let tx_b: PendingTransaction = Transaction::default().fake_sign(sender).into();
@@ -564,7 +564,7 @@ mod tests {
 
 	#[test]
 	fn future_transactions() {
-		let sender = Address::default();
+		let sender = Address::zero();
 		let mut txq = TransactionQueue::default();
 
 		for i in (0..1).chain(3..10) {

ethcore/light/src/types/request/batch.rs

@@ -220,7 +220,7 @@ mod tests {
 			num: 100.into(),
 		})).unwrap();
 		builder.push(Request::Receipts(IncompleteReceiptsRequest {
-			hash: H256::default().into(),
+			hash: H256::zero().into(),
 		})).unwrap();
 	}
 
@@ -267,7 +267,7 @@ mod tests {
 		})).unwrap();
 
 		let mut batch = builder.build();
-		batch.requests[1].fill(|_req_idx, _out_idx| Ok(Output::Hash(42.into())));
+		batch.requests[1].fill(|_req_idx, _out_idx| Ok(Output::Hash(H256::from_low_u64_be(42))));
 
 		assert!(batch.next_complete().is_some());
 		batch.answered += 1;
@@ -289,7 +289,7 @@ mod tests {
 		assert!(batch.next_complete().is_some());
 		let hdr_proof_res = header_proof::Response {
 			proof: vec![],
-			hash: 12.into(),
+			hash: H256::from_low_u64_be(12),
 			td: 21.into(),
 		};
 		batch.supply_response_unchecked(&hdr_proof_res);
@@ -308,7 +308,7 @@ mod tests {
 		})).unwrap();
 
 		let mut batch = builder.build();
-		batch.requests[1].fill(|_req_idx, _out_idx| Ok(Output::Hash(42.into())));
+		batch.requests[1].fill(|_req_idx, _out_idx| Ok(Output::Hash(H256::from_low_u64_be(42))));
 
 		assert!(batch.next_complete().is_some());
 		batch.answered += 1;

ethcore/light/src/types/request/mod.rs

@@ -1648,7 +1648,7 @@ mod tests {
 
 	#[test]
 	fn hash_or_number_roundtrip() {
-		let hash = HashOrNumber::Hash(H256::default());
+		let hash = HashOrNumber::Hash(H256::zero());
 		let number = HashOrNumber::Number(5);
 
 		check_roundtrip(hash);
@@ -1808,7 +1808,7 @@ mod tests {
 		let full_req = Request::Storage(req.clone());
 		let res = StorageResponse {
 			proof: vec![vec![1, 2, 3], vec![4, 5, 6]],
-			value: H256::default(),
+			value: H256::zero(),
 		};
 		let full_res = Response::Storage(res.clone());
 
@@ -1909,7 +1909,7 @@ mod tests {
 				code_hash: Default::default(),
 				storage_root: Default::default()
 			}),
-			Response::Storage(StorageResponse { proof: vec![], value: H256::default() }),
+			Response::Storage(StorageResponse { proof: vec![], value: H256::zero() }),
 			Response::Code(CodeResponse { code: vec![1, 2, 3, 4, 5] }),
 			Response::Execution(ExecutionResponse { items: vec![] }),
 		];

ethcore/node-filter/Cargo.toml

@@ -10,12 +10,12 @@ authors = ["Parity Technologies <admin@parity.io>"]
 ethcore = { path = ".."}
 ethcore-network = { path = "../../util/network" }
 ethcore-network-devp2p = { path = "../../util/network-devp2p" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 log = "0.4"
 parking_lot = "0.7"
-ethabi = "6.0"
+ethabi = "8.0"
-ethabi-derive = "6.0"
+ethabi-derive = "8.0"
-ethabi-contract = "6.0"
+ethabi-contract = "8.0"
 lru-cache = "0.1"
 
 [dev-dependencies]

ethcore/node-filter/src/lib.rs

@@ -135,11 +135,13 @@ mod test {
 	use io::IoChannel;
 	use super::NodeFilter;
 	use tempdir::TempDir;
+	use ethereum_types::Address;
+	use std::str::FromStr;
 
 	/// Contract code: https://gist.github.com/arkpar/467dbcc73cbb85b0997a7a10ffa0695f
 	#[test]
 	fn node_filter() {
-		let contract_addr = "0000000000000000000000000000000000000005".into();
+		let contract_addr = Address::from_str("0000000000000000000000000000000000000005").unwrap();
 		let data = include_bytes!("../res/node_filter.json");
 		let tempdir = TempDir::new("").unwrap();
 		let spec = Spec::load(&tempdir.path(), &data[..]).unwrap();
@@ -153,11 +155,11 @@ mod test {
 			IoChannel::disconnected(),
 		).unwrap();
 		let filter = NodeFilter::new(Arc::downgrade(&client) as Weak<BlockChainClient>, contract_addr);
-		let self1: NodeId = "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002".into();
+		let self1 = NodeId::from_str("00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002").unwrap();
-		let self2: NodeId = "00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003".into();
+		let self2 = NodeId::from_str("00000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003").unwrap();
-		let node1: NodeId = "00000000000000000000000000000000000000000000000000000000000000110000000000000000000000000000000000000000000000000000000000000012".into();
+		let node1 = NodeId::from_str("00000000000000000000000000000000000000000000000000000000000000110000000000000000000000000000000000000000000000000000000000000012").unwrap();
-		let node2: NodeId = "00000000000000000000000000000000000000000000000000000000000000210000000000000000000000000000000000000000000000000000000000000022".into();
+		let node2 = NodeId::from_str("00000000000000000000000000000000000000000000000000000000000000210000000000000000000000000000000000000000000000000000000000000022").unwrap();
-		let nodex: NodeId = "77000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
+		let nodex = NodeId::from_str("77000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
 
 		assert!(filter.connection_allowed(&self1, &node1, ConnectionDirection::Inbound));
 		assert!(filter.connection_allowed(&self1, &nodex, ConnectionDirection::Inbound));

ethcore/private-tx/Cargo.toml

@@ -8,20 +8,20 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 common-types = { path = "../types" }
 derive_more = "0.14.0"
-ethabi = "6.0"
+ethabi = "8.0"
-ethabi-contract = "6.0"
+ethabi-contract = "8.0"
-ethabi-derive = "6.0"
+ethabi-derive = "8.0"
 ethcore = { path = ".." }
 ethcore-call-contract = { path = "../call-contract" }
 ethcore-io = { path = "../../util/io" }
 ethcore-miner = { path = "../../miner" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 ethjson = { path = "../../json" }
 ethkey = { path = "../../accounts/ethkey" }
 fetch = { path = "../../util/fetch" }
 futures = "0.1"
 heapsize = "0.4"
-keccak-hash = "0.1.2"
+keccak-hash = "0.2.0"
 log = "0.4"
 parity-bytes = "0.1"
 parity-crypto = "0.4.0"
@@ -29,7 +29,7 @@ parking_lot = "0.7"
 trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../../util/patricia-trie-ethereum" }
 rand = "0.3"
-rlp = { version = "0.3.0", features = ["ethereum"] }
+rlp = "0.4.0"
 rlp_derive = { path = "../../util/rlp-derive" }
 rustc-hex = "1.0"
 serde = "1.0"

ethcore/private-tx/src/encryptor.rs

@@ -114,7 +114,7 @@ impl SecretStoreEncryptor {
 		let requester = self.config.key_server_account.ok_or_else(|| Error::KeyServerAccountNotSet)?;
 
 		// key id in SS is H256 && we have H160 here => expand with assitional zeros
-		let contract_address_extended: H256 = contract_address.into();
+		let contract_address_extended: H256 = (*contract_address).into();
 		let base_url = self.config.base_url.clone().ok_or_else(|| Error::KeyServerNotSet)?;
 
 		// prepare request url
@@ -156,7 +156,7 @@ impl SecretStoreEncryptor {
 		let decrypted_key = Public::from_slice(&decrypted_bytes);
 
 		// and now take x coordinate of Public as a key
-		let key: Bytes = (*decrypted_key)[..INIT_VEC_LEN].into();
+		let key: Bytes = decrypted_key.as_bytes()[..INIT_VEC_LEN].into();
 
 		// cache the key in the session and clear expired sessions
 		self.sessions.lock().insert(*contract_address, EncryptionSession{
@@ -212,11 +212,11 @@ impl Encryptor for SecretStoreEncryptor {
 		}?;
 
 		// encrypt data
-		let mut cypher = Vec::with_capacity(plain_data.len() + initialisation_vector.len());
+		let mut cypher = Vec::with_capacity(plain_data.len() + initialisation_vector.as_bytes().len());
 		cypher.extend(repeat(0).take(plain_data.len()));
-		crypto::aes::encrypt_128_ctr(&key, initialisation_vector, plain_data, &mut cypher)
+		crypto::aes::encrypt_128_ctr(&key, initialisation_vector.as_bytes(), plain_data, &mut cypher)
 			.map_err(|e| Error::Encrypt(e.to_string()))?;
-		cypher.extend_from_slice(&initialisation_vector);
+		cypher.extend_from_slice(&initialisation_vector.as_bytes());
 
 		Ok(cypher)
 	}

ethcore/private-tx/src/key_server_keys.rs

@@ -29,15 +29,15 @@ use_contract!(keys_acl_contract, "res/keys_acl.json");
 
 /// Returns the address (of the contract), that corresponds to the key
 pub fn key_to_address(key: &H256) -> Address {
-	Address::from_slice(&key.to_vec()[..10])
+	Address::from_slice(&key.as_bytes()[..10])
 }
 
 /// Returns the key from the key server associated with the contract
 pub fn address_to_key(contract_address: &Address) -> H256 {
 	// Current solution uses contract address extended with 0 as id
-	let contract_address_extended: H256 = contract_address.into();
+	let contract_address_extended: H256 = (*contract_address).into();
 
-	H256::from_slice(&contract_address_extended)
+	H256::from_slice(contract_address_extended.as_bytes())
 }
 
 /// Trait for keys server keys provider.
@@ -118,7 +118,7 @@ impl Default for StoringKeyProvider {
 	fn default() -> Self {
 		StoringKeyProvider {
 			available_keys: RwLock::new(None),
-			key_server_account: Some(Address::default()),
+			key_server_account: Some(Address::zero()),
 		}
 	}
 }
@@ -170,4 +170,4 @@ mod tests {
 		keys_data.update_acl_contract();
 		assert_eq!(keys_data.keys_acl_contract.read().unwrap(), key.address());
 	}
-}
+}

ethcore/private-tx/src/lib.rs

@@ -80,7 +80,7 @@ pub use log::{Logging, TransactionLog, ValidatorLog, PrivateTxStatus, FileLogsSe
 
 use std::sync::{Arc, Weak};
 use std::collections::{HashMap, HashSet, BTreeMap};
-use ethereum_types::{H128, H256, U256, Address};
+use ethereum_types::{H128, H256, U256, Address, BigEndianHash};
 use hash::keccak;
 use rlp::*;
 use parking_lot::RwLock;
@@ -285,9 +285,10 @@ impl Provider {
 	/// Calculate hash from united private state and contract nonce
 	pub fn calculate_state_hash(&self, state: &Bytes, nonce: U256) -> H256 {
 		let state_hash = keccak(state);
+		let nonce_h256: H256 = BigEndianHash::from_uint(&nonce);
 		let mut state_buf = [0u8; 64];
-		state_buf[..32].clone_from_slice(&state_hash);
+		state_buf[..32].clone_from_slice(state_hash.as_bytes());
-		state_buf[32..].clone_from_slice(&H256::from(nonce));
+		state_buf[32..].clone_from_slice(nonce_h256.as_bytes());
 		keccak(&state_buf.as_ref())
 	}
 
@@ -481,13 +482,13 @@ impl Provider {
 
 	fn iv_from_transaction(transaction: &SignedTransaction) -> H128 {
 		let nonce = keccak(&transaction.nonce.rlp_bytes());
-		let (iv, _) = nonce.split_at(INIT_VEC_LEN);
+		let (iv, _) = nonce.as_bytes().split_at(INIT_VEC_LEN);
 		H128::from_slice(iv)
 	}
 
 	fn iv_from_address(contract_address: &Address) -> H128 {
 		let address = keccak(&contract_address.rlp_bytes());
-		let (iv, _) = address.split_at(INIT_VEC_LEN);
+		let (iv, _) = address.as_bytes().split_at(INIT_VEC_LEN);
 		H128::from_slice(iv)
 	}
 
@@ -536,8 +537,8 @@ impl Provider {
 		// Sort the storage to guarantee the order for all parties
 		let sorted_storage: BTreeMap<&H256, &H256> = storage.iter().collect();
 		for (key, value) in sorted_storage {
-			raw.extend_from_slice(key);
+			raw.extend_from_slice(key.as_bytes());
-			raw.extend_from_slice(value);
+			raw.extend_from_slice(value.as_bytes());
 		};
 		raw
 	}
@@ -621,8 +622,8 @@ impl Provider {
 				v[31] = s.v();
 				v
 			}).collect::<Vec<[u8; 32]>>(),
-			signatures.iter().map(|s| s.r()).collect::<Vec<&[u8]>>(),
+			signatures.iter().map(|s| H256::from_slice(s.r())).collect::<Vec<H256>>(),
-			signatures.iter().map(|s| s.s()).collect::<Vec<&[u8]>>()
+			signatures.iter().map(|s| H256::from_slice(s.s())).collect::<Vec<H256>>(),
 		)
 	}
 

ethcore/private-tx/src/log.rs

@@ -292,10 +292,11 @@ impl Drop for Logging {
 mod tests {
 	use serde_json;
 	use error::Error;
-	use ethereum_types::H256;
+	use ethereum_types::{H256, Address};
 	use std::collections::{HashMap, BTreeMap};
 	use std::sync::Arc;
 	use std::time::{SystemTime, Duration};
+	use std::str::FromStr;
 	use types::transaction::Transaction;
 	use parking_lot::RwLock;
 	use super::{TransactionLog, Logging, PrivateTxStatus, LogsSerializer, ValidatorLog};
@@ -360,8 +361,8 @@ mod tests {
 		let logger = Logging::new(Arc::new(StringLogSerializer::new("".into())));
 		let private_tx = Transaction::default();
 		let hash = private_tx.hash(None);
-		logger.private_tx_created(&hash, &vec!["0x82a978b3f5962a5b0957d9ee9eef472ee55b42f1".into()]);
+		logger.private_tx_created(&hash, &vec![Address::from_str("82a978b3f5962a5b0957d9ee9eef472ee55b42f1").unwrap()]);
-		logger.signature_added(&hash, &"0x82a978b3f5962a5b0957d9ee9eef472ee55b42f1".into());
+		logger.signature_added(&hash, &Address::from_str("82a978b3f5962a5b0957d9ee9eef472ee55b42f1").unwrap());
 		logger.tx_deployed(&hash, &hash);
 		let tx_log = logger.tx_log(&hash).unwrap();
 		assert_eq!(tx_log.status, PrivateTxStatus::Deployed);
@@ -371,38 +372,38 @@ mod tests {
 	fn serialization() {
 		let current_timestamp = SystemTime::now();
 		let initial_validator_log = ValidatorLog {
-			account: "0x82a978b3f5962a5b0957d9ee9eef472ee55b42f1".into(),
+			account: Address::from_str("82a978b3f5962a5b0957d9ee9eef472ee55b42f1").unwrap(),
 			validation_timestamp: Some(current_timestamp.checked_add(Duration::from_secs(1)).unwrap()),
 		};
 		let initial_log = TransactionLog {
-			tx_hash: "0x64f648ca7ae7f4138014f860ae56164d8d5732969b1cea54d8be9d144d8aa6f6".into(),
+			tx_hash: H256::from_str("64f648ca7ae7f4138014f860ae56164d8d5732969b1cea54d8be9d144d8aa6f6").unwrap(),
 			status: PrivateTxStatus::Deployed,
 			creation_timestamp: current_timestamp,
 			validators: vec![initial_validator_log],
 			deployment_timestamp: Some(current_timestamp.checked_add(Duration::from_secs(2)).unwrap()),
-			public_tx_hash: Some("0x69b9c691ede7993effbcc88911c309af1c82be67b04b3882dd446b808ae146da".into()),
+			public_tx_hash: Some(H256::from_str("69b9c691ede7993effbcc88911c309af1c82be67b04b3882dd446b808ae146da").unwrap()),
 		};
 		let serializer = Arc::new(StringLogSerializer::new(serde_json::to_string(&vec![initial_log.clone()]).unwrap()));
 		let logger = Logging::new(serializer.clone());
-		let hash: H256 = "0x63c715e88f7291e66069302f6fcbb4f28a19ef5d7cbd1832d0c01e221c0061c6".into();
+		let hash = H256::from_str("63c715e88f7291e66069302f6fcbb4f28a19ef5d7cbd1832d0c01e221c0061c6").unwrap();
-		logger.private_tx_created(&hash, &vec!["0x7ffbe3512782069be388f41be4d8eb350672d3a5".into()]);
+		logger.private_tx_created(&hash, &vec![Address::from_str("7ffbe3512782069be388f41be4d8eb350672d3a5").unwrap()]);
-		logger.signature_added(&hash, &"0x7ffbe3512782069be388f41be4d8eb350672d3a5".into());
+		logger.signature_added(&hash, &Address::from_str("7ffbe3512782069be388f41be4d8eb350672d3a5").unwrap());
-		logger.tx_deployed(&hash, &"0xde2209a8635b9cab9eceb67928b217c70ab53f6498e5144492ec01e6f43547d7".into());
+		logger.tx_deployed(&hash, &H256::from_str("de2209a8635b9cab9eceb67928b217c70ab53f6498e5144492ec01e6f43547d7").unwrap());
 		drop(logger);
 		let added_validator_log = ValidatorLog {
-			account: "0x7ffbe3512782069be388f41be4d8eb350672d3a5".into(),
+			account: Address::from_str("7ffbe3512782069be388f41be4d8eb350672d3a5").unwrap(),
 			validation_timestamp: Some(current_timestamp.checked_add(Duration::from_secs(7)).unwrap()),
 		};
 		let added_log = TransactionLog {
-			tx_hash: "0x63c715e88f7291e66069302f6fcbb4f28a19ef5d7cbd1832d0c01e221c0061c6".into(),
+			tx_hash: H256::from_str("63c715e88f7291e66069302f6fcbb4f28a19ef5d7cbd1832d0c01e221c0061c6").unwrap(),
 			status: PrivateTxStatus::Deployed,
 			creation_timestamp: current_timestamp.checked_add(Duration::from_secs(6)).unwrap(),
 			validators: vec![added_validator_log],
 			deployment_timestamp: Some(current_timestamp.checked_add(Duration::from_secs(8)).unwrap()),
-			public_tx_hash: Some("0xde2209a8635b9cab9eceb67928b217c70ab53f6498e5144492ec01e6f43547d7".into()),
+			public_tx_hash: Some(H256::from_str("de2209a8635b9cab9eceb67928b217c70ab53f6498e5144492ec01e6f43547d7").unwrap()),
 		};
 		let should_be_final = vec![added_log, initial_log];
 		let deserialized_logs: Vec<TransactionLog> = serde_json::from_str(&serializer.log()).unwrap();
 		assert_eq!(deserialized_logs, should_be_final);
 	}
-}
+}

ethcore/private-tx/src/messages.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
-use ethereum_types::{H256, U256, Address};
+use ethereum_types::{H256, U256, Address, BigEndianHash};
 use bytes::Bytes;
 use hash::keccak;
 use rlp::Encodable;
@@ -38,7 +38,7 @@ impl PrivateTransaction {
 		PrivateTransaction {
 			encrypted,
 			contract,
-			hash: 0.into(),
+			hash: H256::zero(),
 		}.compute_hash()
 	}
 
@@ -87,7 +87,7 @@ impl SignedPrivateTransaction {
 			r: sig.r().into(),
 			s: sig.s().into(),
 			v: add_chain_replay_protection(sig.v() as u64, chain_id),
-			hash: 0.into(),
+			hash: H256::zero(),
 		}.compute_hash()
 	}
 
@@ -100,7 +100,11 @@ impl SignedPrivateTransaction {
 
 	/// Construct a signature object from the sig.
 	pub fn signature(&self) -> Signature {
-		Signature::from_rsv(&self.r.into(), &self.s.into(), self.standard_v())
+		Signature::from_rsv(
+			&BigEndianHash::from_uint(&self.r),
+			&BigEndianHash::from_uint(&self.s),
+			self.standard_v(),
+		)
 	}
 
 	/// Get the hash of of the original transaction.

ethcore/private-tx/tests/private_contract.rs

@@ -231,7 +231,7 @@ fn call_other_private_contract() {
 	trace!("Creating private contract B");
 	// Build constructor data
 	let mut deploy_data = "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".to_string();
-	deploy_data.push_str(&address_a.to_vec().to_hex());
+	deploy_data.push_str(&address_a.as_bytes().to_vec().to_hex());
 	let private_contract_b_test = deploy_data.from_hex().unwrap();
 	let mut private_create_tx2 = Transaction::default();
 	private_create_tx2.action = Action::Create;

ethcore/service/Cargo.toml

@@ -11,7 +11,7 @@ ethcore-blockchain = { path = "../blockchain" }
 ethcore-io = { path = "../../util/io" }
 ethcore-private-tx = { path = "../private-tx" }
 ethcore-sync = { path = "../sync" }
-ethereum-types = "0.4"
+ethereum-types = "0.6.0"
 kvdb = "0.1"
 log = "0.4"
 trace-time = "0.1"

ethcore/src/account_db.rs

@@ -31,8 +31,8 @@ use ethereum_types::Address;
 fn combine_key<'a>(address_hash: &'a H256, key: &'a H256) -> H256 {
 	let mut dst = key.clone();
 	{
-		let last_src: &[u8] = &*address_hash;
+		let last_src: &[u8] = address_hash.as_bytes();
-		let last_dst: &mut [u8] = &mut *dst;
+		let last_dst: &mut [u8] = dst.as_bytes_mut();
 		for (k, a) in last_dst[12..].iter_mut().zip(&last_src[12..]) {
 			*k ^= *a
 		}

ethcore/src/block.rs

@@ -603,7 +603,7 @@ mod tests {
 			db,
 			parent,
 			last_hashes,
-			Address::new(),
+			Address::zero(),
 			(3141562.into(), 31415620.into()),
 			vec![],
 			false,

ethcore/src/builtin.rs

@@ -95,7 +95,7 @@ impl Pricer for ModexpPricer {
 		// read lengths as U256 here for accurate gas calculation.
 		let mut read_len = || {
 			reader.read_exact(&mut buf[..]).expect("reading from zero-extended memory cannot fail; qed");
-			U256::from(H256::from_slice(&buf[..]))
+			U256::from_big_endian(&buf[..])
 		};
 		let base_len = read_len();
 		let exp_len = read_len();
@@ -118,7 +118,7 @@ impl Pricer for ModexpPricer {
 			let mut reader = input[(96 + base_len as usize)..].chain(io::repeat(0));
 			let len = min(exp_len, 32) as usize;
 			reader.read_exact(&mut buf[(32 - len)..]).expect("reading from zero-extended memory cannot fail; qed");
-			U256::from(H256::from_slice(&buf[..]))
+			U256::from_big_endian(&buf[..])
 		};
 
 		let adjusted_exp_len = Self::adjusted_exp_len(exp_len, exp_low);
@@ -286,7 +286,7 @@ impl Impl for EcRecover {
 			if let Ok(p) = ec_recover(&s, &hash) {
 				let r = keccak(p);
 				output.write(0, &[0; 12]);
-				output.write(12, &r[12..r.len()]);
+				output.write(12, &r.as_bytes()[12..]);
 			}
 		}
 

ethcore/src/client/client.rs

@@ -33,7 +33,7 @@ use itertools::Itertools;
 use journaldb;
 use kvdb::{DBValue, KeyValueDB, DBTransaction};
 use parking_lot::{Mutex, RwLock};
-use rand::OsRng;
+use rand::rngs::OsRng;
 use types::transaction::{self, LocalizedTransaction, UnverifiedTransaction, SignedTransaction, Action};
 use trie::{TrieSpec, TrieFactory, Trie};
 use types::ancestry_action::AncestryAction;
@@ -456,7 +456,7 @@ impl Importer {
 		{
 			trace_time!("import_old_block");
 			// verify the block, passing the chain for updating the epoch verifier.
-			let mut rng = OsRng::new()?;
+			let mut rng = OsRng::new().map_err(|e| format!("{}", e))?;
 			self.ancient_verifier.verify(&mut rng, &unverified.header, &chain)?;
 
 			// Commit results
@@ -908,12 +908,12 @@ impl Client {
 			let hashes = self.last_hashes.read();
 			if hashes.front().map_or(false, |h| h == parent_hash) {
 				let mut res = Vec::from(hashes.clone());
-				res.resize(256, H256::default());
+				res.resize(256, H256::zero());
 				return Arc::new(res);
 			}
 		}
 		let mut last_hashes = LastHashes::new();
-		last_hashes.resize(256, H256::default());
+		last_hashes.resize(256, H256::zero());
 		last_hashes[0] = parent_hash.clone();
 		let chain = self.chain.read();
 		for i in 0..255 {
@@ -1223,7 +1223,7 @@ impl Client {
 	// transaction for calling contracts from services like engine.
 	// from the null sender, with 50M gas.
 	fn contract_call_tx(&self, block_id: BlockId, address: Address, data: Bytes) -> SignedTransaction {
-		let from = Address::default();
+		let from = Address::zero();
 		transaction::Transaction {
 			nonce: self.nonce(&from, block_id).unwrap_or_else(|| self.engine.account_start_nonce(0)),
 			action: Action::Call(address),
@@ -1341,8 +1341,8 @@ impl BlockChainReset for Client {
 			best_block_hash = current_header.parent_hash();
 
 			let (number, hash) = (current_header.number(), current_header.hash());
-			batch.delete(::db::COL_HEADERS, &hash);
+			batch.delete(::db::COL_HEADERS, hash.as_bytes());
-			batch.delete(::db::COL_BODIES, &hash);
+			batch.delete(::db::COL_BODIES, hash.as_bytes());
 			Writable::delete::<BlockDetails, H264>
 				(&mut batch, ::db::COL_EXTRA, &hash);
 			Writable::delete::<H256, BlockNumberKey>
@@ -1375,7 +1375,7 @@ impl BlockChainReset for Client {
 			&best_block_details
 		);
 		// update the new best block hash
-		batch.put(::db::COL_EXTRA, b"best", &best_block_hash);
+		batch.put(::db::COL_EXTRA, b"best", best_block_hash.as_bytes());
 
 		self.db.read()
 			.key_value()
@@ -1822,7 +1822,7 @@ impl BlockChainClient for Client {
 		};
 
 		if let Some(after) = after {
-			if let Err(e) = iter.seek(after) {
+			if let Err(e) = iter.seek(after.as_bytes()) {
 				trace!(target: "fatdb", "list_accounts: Couldn't seek the DB: {:?}", e);
 			} else {
 				// Position the iterator after the `after` element
@@ -1870,7 +1870,7 @@ impl BlockChainClient for Client {
 		};
 
 		if let Some(after) = after {
-			if let Err(e) = iter.seek(after) {
+			if let Err(e) = iter.seek(after.as_bytes()) {
 				trace!(target: "fatdb", "list_storage: Couldn't seek the DB: {:?}", e);
 			} else {
 				// Position the iterator after the `after` element
@@ -2592,6 +2592,7 @@ fn transaction_receipt(
 
 #[cfg(test)]
 mod tests {
+	use ethereum_types::{H256, Address};
 
 	#[test]
 	fn should_not_cache_details_before_commit() {
@@ -2667,19 +2668,19 @@ mod tests {
 		use types::transaction::{Transaction, LocalizedTransaction, Action};
 
 		// given
-		let key = KeyPair::from_secret_slice(&keccak("test")).unwrap();
+		let key = KeyPair::from_secret_slice(keccak("test").as_bytes()).unwrap();
 		let secret = key.secret();
 		let machine = ::ethereum::new_frontier_test_machine();
 
 		let block_number = 1;
-		let block_hash = 5.into();
+		let block_hash = H256::from_low_u64_be(5);
-		let state_root = 99.into();
+		let state_root = H256::from_low_u64_be(99);
 		let gas_used = 10.into();
 		let raw_tx = Transaction {
 			nonce: 0.into(),
 			gas_price: 0.into(),
 			gas: 21000.into(),
-			action: Action::Call(10.into()),
+			action: Action::Call(Address::from_low_u64_be(10)),
 			value: 0.into(),
 			data: vec![],
 		};
@@ -2692,11 +2693,11 @@ mod tests {
 			cached_sender: Some(tx1.sender()),
 		};
 		let logs = vec![LogEntry {
-			address: 5.into(),
+			address: Address::from_low_u64_be(5),
 			topics: vec![],
 			data: vec![],
 		}, LogEntry {
-			address: 15.into(),
+			address: Address::from_low_u64_be(15),
 			topics: vec![],
 			data: vec![],
 		}];

ethcore/src/client/evm_test_client.rs

@@ -204,7 +204,7 @@ impl<'a> EvmTestClient<'a> {
 			author: *genesis.author(),
 			timestamp: genesis.timestamp(),
 			difficulty: *genesis.difficulty(),
-			last_hashes: Arc::new([H256::default(); 256].to_vec()),
+			last_hashes: Arc::new([H256::zero(); 256].to_vec()),
 			gas_used: 0.into(),
 			gas_limit: *genesis.gas_limit(),
 		};

ethcore/src/client/test_client.rs

@@ -16,6 +16,7 @@
 
 //! Test client.
 
+use std::str::FromStr;
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering as AtomicOrder};
 use std::sync::Arc;
 use std::collections::{HashMap, BTreeMap};
@@ -167,9 +168,9 @@ impl TestBlockChainClient {
 		let mut client = TestBlockChainClient {
 			blocks: RwLock::new(HashMap::new()),
 			numbers: RwLock::new(HashMap::new()),
-			genesis_hash: H256::new(),
+			genesis_hash: H256::zero(),
 			extra_data: extra_data,
-			last_hash: RwLock::new(H256::new()),
+			last_hash: RwLock::new(H256::zero()),
 			difficulty: RwLock::new(spec.genesis_header().difficulty().clone()),
 			balances: RwLock::new(HashMap::new()),
 			nonces: RwLock::new(HashMap::new()),
@@ -326,7 +327,7 @@ impl TestBlockChainClient {
 	pub fn corrupt_block_parent(&self, n: BlockNumber) {
 		let hash = self.block_hash(BlockId::Number(n)).unwrap();
 		let mut header: Header = self.block_header(BlockId::Number(n)).unwrap().decode().expect("decoding failed");
-		header.set_parent_hash(H256::from(42));
+		header.set_parent_hash(H256::from_low_u64_be(42));
 		let mut rlp = RlpStream::new_list(3);
 		rlp.append(&header);
 		rlp.append_raw(&::rlp::NULL_RLP, 1);
@@ -432,7 +433,7 @@ impl ScheduleInfo for TestBlockChainClient {
 
 impl ImportSealedBlock for TestBlockChainClient {
 	fn import_sealed_block(&self, _block: SealedBlock) -> EthcoreResult<H256> {
-		Ok(H256::default())
+		Ok(H256::zero())
 	}
 }
 
@@ -661,7 +662,15 @@ impl BlockChainClient for TestBlockChainClient {
 	}
 
 	fn replay_block_transactions(&self, _block: BlockId, _analytics: CallAnalytics) -> Result<Box<Iterator<Item = (H256, Executed)>>, CallError> {
-		Ok(Box::new(self.traces.read().clone().unwrap().into_iter().map(|t| t.transaction_hash.unwrap_or(H256::new())).zip(self.execution_result.read().clone().unwrap().into_iter())))
+		Ok(Box::new(
+			self.traces
+				.read()
+				.clone()
+				.unwrap()
+				.into_iter()
+				.map(|t| t.transaction_hash.unwrap_or_default())
+				.zip(self.execution_result.read().clone().unwrap().into_iter())
+		))
 	}
 
 	fn block_total_difficulty(&self, _id: BlockId) -> Option<U256> {
@@ -685,7 +694,8 @@ impl BlockChainClient for TestBlockChainClient {
 
 	fn storage_at(&self, address: &Address, position: &H256, state: StateOrBlock) -> Option<H256> {
 		match state {
-			StateOrBlock::Block(BlockId::Latest) => Some(self.storage.read().get(&(address.clone(), position.clone())).cloned().unwrap_or_else(H256::new)),
+			StateOrBlock::Block(BlockId::Latest) =>
+				Some(self.storage.read().get(&(address.clone(), position.clone())).cloned().unwrap_or_default()),
 			_ => None,
 		}
 	}
@@ -773,7 +783,7 @@ impl BlockChainClient for TestBlockChainClient {
 	// works only if blocks are one after another 1 -> 2 -> 3
 	fn tree_route(&self, from: &H256, to: &H256) -> Option<TreeRoute> {
 		Some(TreeRoute {
-			ancestor: H256::new(),
+			ancestor: H256::zero(),
 			index: 0,
 			blocks: {
 				let numbers_read = self.numbers.read();
@@ -808,7 +818,7 @@ impl BlockChainClient for TestBlockChainClient {
 	// TODO: returns just hashes instead of node state rlp(?)
 	fn state_data(&self, hash: &H256) -> Option<Bytes> {
 		// starts with 'f' ?
-		if *hash > H256::from("f000000000000000000000000000000000000000000000000000000000000000") {
+		if *hash > H256::from_str("f000000000000000000000000000000000000000000000000000000000000000").unwrap() {
 			let mut rlp = RlpStream::new();
 			rlp.append(&hash.clone());
 			return Some(rlp.out());
@@ -818,7 +828,7 @@ impl BlockChainClient for TestBlockChainClient {
 
 	fn block_receipts(&self, hash: &H256) -> Option<BlockReceipts> {
 		// starts with 'f' ?
-		if *hash > H256::from("f000000000000000000000000000000000000000000000000000000000000000") {
+		if *hash > H256::from_str("f000000000000000000000000000000000000000000000000000000000000000").unwrap() {
 			let receipt = BlockReceipts::new(vec![Receipt::new(
 				TransactionOutcome::StateRoot(H256::zero()),
 				U256::zero(),

ethcore/src/engines/authority_round/mod.rs

@@ -212,7 +212,7 @@ struct EpochManager {
 impl EpochManager {
 	fn blank() -> Self {
 		EpochManager {
-			epoch_transition_hash: H256::default(),
+			epoch_transition_hash: H256::zero(),
 			epoch_transition_number: 0,
 			finality_checker: RollingFinality::blank(Vec::new()),
 			force: true,
@@ -502,7 +502,7 @@ impl super::EpochVerifier<EthereumMachine> for EpochVerifier {
 fn header_seal_hash(header: &Header, empty_steps_rlp: Option<&[u8]>) -> H256 {
 	match empty_steps_rlp {
 		Some(empty_steps_rlp) => {
-			let mut message = header.bare_hash().to_vec();
+			let mut message = header.bare_hash().as_bytes().to_vec();
 			message.extend_from_slice(empty_steps_rlp);
 			keccak(message)
 		},
@@ -1170,7 +1170,7 @@ impl Engine<EthereumMachine> for AuthorityRound {
 
 					let mut fields = vec![
 						encode(&step),
-						encode(&(&H520::from(signature) as &[u8])),
+						encode(&(H520::from(signature).as_bytes())),
 					];
 
 					if let Some(empty_steps_rlp) = empty_steps_rlp {
@@ -2138,7 +2138,7 @@ mod tests {
 		let signature = tap.sign(addr1, Some("1".into()), header.bare_hash()).unwrap();
 
 		// empty step with invalid step
-		let empty_steps = vec![SealedEmptyStep { signature: 0.into(), step: 2 }];
+		let empty_steps = vec![SealedEmptyStep { signature: H520::zero(), step: 2 }];
 		set_empty_steps_seal(&mut header, 2, &signature, &empty_steps);
 
 		assert_insufficient_proof(
@@ -2147,7 +2147,7 @@ mod tests {
 		);
 
 		// empty step with invalid signature
-		let empty_steps = vec![SealedEmptyStep { signature: 0.into(), step: 1 }];
+		let empty_steps = vec![SealedEmptyStep { signature: H520::zero(), step: 1 }];
 		set_empty_steps_seal(&mut header, 2, &signature, &empty_steps);
 
 		assert_insufficient_proof(
@@ -2289,7 +2289,7 @@ mod tests {
 			p.maximum_empty_steps = 0;
 		});
 
-		let parent_hash: H256 = 1.into();
+		let parent_hash = H256::from_low_u64_be(1);
 		let signature = H520::default();
 		let step = |step: u64| EmptyStep {
 			step,

ethcore/src/engines/basic_authority.rs

@@ -113,7 +113,7 @@ impl Engine<EthereumMachine> for BasicAuthority {
 		if self.validators.contains(header.parent_hash(), author) {
 			// account should be pernamently unlocked, otherwise sealing will fail
 			if let Ok(signature) = self.sign(header.bare_hash()) {
-				return Seal::Regular(vec![::rlp::encode(&(&H520::from(signature) as &[u8]))]);
+				return Seal::Regular(vec![::rlp::encode(&(H520::from(signature).as_bytes()))]);
 			} else {
 				trace!(target: "basicauthority", "generate_seal: FAIL: accounts secret key unavailable");
 			}

ethcore/src/engines/block_reward.rs

@@ -177,8 +177,9 @@ pub fn apply_block_rewards<M: Machine>(
 
 #[cfg(test)]
 mod test {
+	use std::str::FromStr;
 	use client::PrepareOpenBlock;
-	use ethereum_types::U256;
+	use ethereum_types::{U256, Address};
 	use spec::Spec;
 	use test_helpers::generate_dummy_client_with_spec;
 
@@ -193,12 +194,12 @@ mod test {
 
 		// the spec has a block reward contract defined at the given address
 		let block_reward_contract = BlockRewardContract::new_from_address(
-			"0000000000000000000000000000000000000042".into(),
+			Address::from_str("0000000000000000000000000000000000000042").unwrap(),
 		);
 
 		let mut call = |to, data| {
 			let mut block = client.prepare_open_block(
-				"0000000000000000000000000000000000000001".into(),
+				Address::from_str("0000000000000000000000000000000000000001").unwrap(),
 				(3141562.into(), 31415620.into()),
 				vec![],
 			).unwrap();
@@ -223,16 +224,16 @@ mod test {
 
 		// the contract rewards (1000 + kind) for each benefactor
 		let beneficiaries = vec![
-			("0000000000000000000000000000000000000033".into(), RewardKind::Author),
+			(Address::from_str("0000000000000000000000000000000000000033").unwrap(), RewardKind::Author),
-			("0000000000000000000000000000000000000034".into(), RewardKind::Uncle(1)),
+			(Address::from_str("0000000000000000000000000000000000000034").unwrap(), RewardKind::Uncle(1)),
-			("0000000000000000000000000000000000000035".into(), RewardKind::EmptyStep),
+			(Address::from_str("0000000000000000000000000000000000000035").unwrap(), RewardKind::EmptyStep),
 		];
 
 		let rewards = block_reward_contract.reward(&beneficiaries, &mut call).unwrap();
 		let expected = vec![
-			("0000000000000000000000000000000000000033".into(), U256::from(1000)),
+			(Address::from_str("0000000000000000000000000000000000000033").unwrap(), U256::from(1000)),
-			("0000000000000000000000000000000000000034".into(), U256::from(1000 + 101)),
+			(Address::from_str("0000000000000000000000000000000000000034").unwrap(), U256::from(1000 + 101)),
-			("0000000000000000000000000000000000000035".into(), U256::from(1000 + 2)),
+			(Address::from_str("0000000000000000000000000000000000000035").unwrap(), U256::from(1000 + 2)),
 		];
 
 		assert_eq!(expected, rewards);

ethcore/src/engines/clique/block_state.rs

@@ -194,7 +194,7 @@ impl CliqueBlockState {
 				Err(BlockError::InvalidSealArity(Mismatch { expected: 2, found: decoded_seal.len() }))?
 			}
 
-			let nonce: H64 = decoded_seal[1].into();
+			let nonce = H64::from_slice(decoded_seal[1]);
 			self.update_signers_on_vote(VoteType::from_nonce(nonce)?, creator, *header.author(), header.number())?;
 		}
 

ethcore/src/engines/clique/mod.rs

@@ -570,7 +570,7 @@ impl Engine<EthereumMachine> for Clique {
 
 		if is_checkpoint && *header.author() != NULL_AUTHOR {
 			return Err(EngineError::CliqueWrongAuthorCheckpoint(Mismatch {
-				expected: 0.into(),
+				expected: H160::zero(),
 				found: *header.author(),
 			}))?;
 		}
@@ -583,8 +583,8 @@ impl Engine<EthereumMachine> for Clique {
 			}))?
 		}
 
-		let mixhash: H256 = seal_fields[0].into();
+		let mixhash = H256::from_slice(seal_fields[0]);
-		let nonce: H64 = seal_fields[1].into();
+		let nonce = H64::from_slice(seal_fields[1]);
 
 		// Nonce must be 0x00..0 or 0xff..f
 		if nonce != NONCE_DROP_VOTE && nonce != NONCE_AUTH_VOTE {

ethcore/src/engines/clique/tests.rs

@@ -70,10 +70,10 @@ impl CliqueTester {
 		let mut extra_data = vec![0; VANITY_LENGTH];
 
 		for &signer in SIGNER_TAGS.iter() {
-			let secret = Secret::from(H256::from(signer as u64));
+			let secret = Secret::from(H256::from_low_u64_be(signer as u64));
 			let keypair = KeyPair::from_secret(secret).unwrap();
 			if initial_signers.contains(&signer) {
-				extra_data.extend(&*keypair.address());
+				extra_data.extend(keypair.address().as_bytes());
 			}
 			signers.insert(signer, keypair);
 		}
@@ -151,7 +151,7 @@ impl CliqueTester {
 			CliqueBlockType::Checkpoint => {
 				let signers = self.clique.state(&last_header).unwrap().signers().clone();
 				for signer in signers {
-					extra_data.extend(&*signer);
+					extra_data.extend(signer.as_bytes());
 				}
 			}
 			CliqueBlockType::Vote(v) => seal = v.as_rlp(),

ethcore/src/engines/clique/util.rs

@@ -102,7 +102,7 @@ pub fn extract_signers(header: &Header) -> Result<BTreeSet<Address>, Error> {
 		.map(|i| {
 			let start = i * ADDRESS_LENGTH;
 			let end = start + ADDRESS_LENGTH;
-			signers_raw[start..end].into()
+			Address::from_slice(&signers_raw[start..end])
 		})
 		.collect();
 
@@ -111,5 +111,5 @@ pub fn extract_signers(header: &Header) -> Result<BTreeSet<Address>, Error> {
 
 /// Retrieve `null_seal`
 pub fn null_seal() -> Vec<Vec<u8>> {
-	vec![encode(&NULL_MIXHASH.to_vec()), encode(&NULL_NONCE.to_vec())]
+	vec![encode(&NULL_MIXHASH.as_bytes().to_vec()), encode(&NULL_NONCE.as_bytes().to_vec())]
 }

ethcore/src/engines/instant_seal.rs

@@ -108,7 +108,7 @@ mod tests {
 		let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
 		let genesis_header = spec.genesis_header();
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
-		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::default(), (3141562.into(), 31415620.into()), vec![], false, None).unwrap();
+		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![], false, None).unwrap();
 		let b = b.close_and_lock().unwrap();
 		if let Seal::Regular(seal) = engine.generate_seal(&b, &genesis_header) {
 			assert!(b.try_seal(engine, seal).is_ok());

ethcore/src/engines/validator_set/contract.rs

@@ -175,7 +175,7 @@ mod tests {
 
 		// Check a block that is a bit in future, reject it but don't report the validator.
 		let mut header = Header::default();
-		let seal = vec![encode(&4u8), encode(&(&H520::default() as &[u8]))];
+		let seal = vec![encode(&4u8), encode(&H520::zero().as_bytes())];
 		header.set_seal(seal);
 		header.set_author(v1);
 		header.set_number(2);
@@ -186,7 +186,7 @@ mod tests {
 
 		// Now create one that is more in future. That one should be rejected and validator should be reported.
 		let mut header = Header::default();
-		let seal = vec![encode(&8u8), encode(&(&H520::default() as &[u8]))];
+		let seal = vec![encode(&8u8), encode(&H520::zero().as_bytes())];
 		header.set_seal(seal);
 		header.set_author(v1);
 		header.set_number(2);

ethcore/src/engines/validator_set/safe_contract.rs

@@ -106,7 +106,7 @@ fn check_first_proof(machine: &EthereumMachine, contract_address: Address, old_h
 		timestamp: old_header.timestamp(),
 		last_hashes: {
 			// this will break if we don't inclue all 256 last hashes.
-			let mut last_hashes: Vec<_> = (0..256).map(|_| H256::default()).collect();
+			let mut last_hashes: Vec<_> = (0..256).map(|_| H256::zero()).collect();
 			last_hashes[255] = *old_header.parent_hash();
 			Arc::new(last_hashes)
 		},
@@ -117,7 +117,7 @@ fn check_first_proof(machine: &EthereumMachine, contract_address: Address, old_h
 	let number = old_header.number();
 	let (data, decoder) = validator_set::functions::get_validators::call();
 
-	let from = Address::default();
+	let from = Address::zero();
 	let tx = Transaction {
 		nonce: machine.account_start_nonce(number),
 		action: Action::Call(contract_address),
@@ -516,7 +516,7 @@ mod tests {
 			nonce: 2.into(),
 			gas_price: 0.into(),
 			gas: 21000.into(),
-			action: Action::Call(Address::default()),
+			action: Action::Call(Address::zero()),
 			value: 0.into(),
 			data: Vec::new(),
 		}.sign(&s0, Some(chain_id));

ethcore/src/ethereum/ethash.rs

@@ -324,7 +324,7 @@ impl Engine<EthereumMachine> for Arc<Ethash> {
 
 		let difficulty = ethash::boundary_to_difficulty(&H256(quick_get_difficulty(
 			&header.bare_hash().0,
-			seal.nonce.low_u64(),
+			seal.nonce.to_low_u64_be(),
 			&seal.mix_hash.0,
 			header.number() >= self.ethash_params.progpow_transition
 		)));
@@ -339,14 +339,14 @@ impl Engine<EthereumMachine> for Arc<Ethash> {
 	fn verify_block_unordered(&self, header: &Header) -> Result<(), Error> {
 		let seal = Seal::parse_seal(header.seal())?;
 
-		let result = self.pow.compute_light(header.number() as u64, &header.bare_hash().0, seal.nonce.low_u64());
+		let result = self.pow.compute_light(header.number() as u64, &header.bare_hash().0, seal.nonce.to_low_u64_be());
 		let mix = H256(result.mix_hash);
 		let difficulty = ethash::boundary_to_difficulty(&H256(result.value));
 		trace!(target: "miner", "num: {num}, seed: {seed}, h: {h}, non: {non}, mix: {mix}, res: {res}",
 			   num = header.number() as u64,
 			   seed = H256(slow_hash_block_number(header.number() as u64)),
 			   h = header.bare_hash(),
-			   non = seal.nonce.low_u64(),
+			   non = seal.nonce.to_low_u64_be(),
 			   mix = H256(result.mix_hash),
 			   res = H256(result.value));
 		if mix != seal.mix_hash {
@@ -591,7 +591,7 @@ mod tests {
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let mut b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![], false, None).unwrap();
 		let mut uncle = Header::new();
-		let uncle_author: Address = "ef2d6d194084c2de36e0dabfce45d046b37d1106".into();
+		let uncle_author = Address::from_str("ef2d6d194084c2de36e0dabfce45d046b37d1106").unwrap();
 		uncle.set_author(uncle_author);
 		b.push_uncle(uncle).unwrap();
 
@@ -610,8 +610,8 @@ mod tests {
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![], false, None).unwrap();
 		let b = b.close().unwrap();
 
-		let ubi_contract: Address = "00efdd5883ec628983e9063c7d969fe268bbf310".into();
+		let ubi_contract = Address::from_str("00efdd5883ec628983e9063c7d969fe268bbf310").unwrap();
-		let dev_contract: Address = "00756cf8159095948496617f5fb17ed95059f536".into();
+		let dev_contract = Address::from_str("00756cf8159095948496617f5fb17ed95059f536").unwrap();
 		assert_eq!(b.state.balance(&Address::zero()).unwrap(), U256::from_str("d8d726b7177a80000").unwrap());
 		assert_eq!(b.state.balance(&ubi_contract).unwrap(), U256::from_str("2b5e3af16b1880000").unwrap());
 		assert_eq!(b.state.balance(&dev_contract).unwrap(), U256::from_str("c249fdd327780000").unwrap());
@@ -721,7 +721,7 @@ mod tests {
 	fn can_do_proof_of_work_unordered_verification_fail() {
 		let engine = test_spec().engine;
 		let mut header: Header = Header::default();
-		header.set_seal(vec![rlp::encode(&H256::from("b251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d")), rlp::encode(&H64::zero())]);
+		header.set_seal(vec![rlp::encode(&H256::from_str("b251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d").unwrap()), rlp::encode(&H64::zero())]);
 		header.set_difficulty(U256::from_str("ffffffffffffffffffffffffffffffffffffffffffffaaaaaaaaaaaaaaaaaaaa").unwrap());
 
 		let verify_result = engine.verify_block_unordered(&header);
@@ -914,7 +914,7 @@ mod tests {
 		let tempdir = TempDir::new("").unwrap();
 		let ethash = Ethash::new(tempdir.path(), ethparams, machine, None);
 		let mut header = Header::default();
-		header.set_seal(vec![rlp::encode(&H256::from("b251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d")), rlp::encode(&H64::zero())]);
+		header.set_seal(vec![rlp::encode(&H256::from_str("b251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d").unwrap()), rlp::encode(&H64::zero())]);
 		let info = ethash.extra_info(&header);
 		assert_eq!(info["nonce"], "0x0000000000000000");
 		assert_eq!(info["mixHash"], "0xb251bd2e0283d0658f2cadfdc8ca619b5de94eca5742725e2e757dd13ed7503d");

ethcore/src/ethereum/mod.rs

@@ -187,7 +187,8 @@ pub fn new_kovan_wasm_test_machine() -> EthereumMachine { load_machine(include_b
 
 #[cfg(test)]
 mod tests {
-	use ethereum_types::U256;
+	use std::str::FromStr;
+	use ethereum_types::{U256, H256, Address};
 	use state::*;
 	use super::*;
 	use test_helpers::get_temp_state_db;
@@ -201,21 +202,21 @@ mod tests {
 		let genesis_header = spec.genesis_header();
 		let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
 		let s = State::from_existing(db, genesis_header.state_root().clone(), engine.account_start_nonce(0), Default::default()).unwrap();
-		assert_eq!(s.balance(&"0000000000000000000000000000000000000001".into()).unwrap(), 1u64.into());
+		assert_eq!(s.balance(&Address::from_str("0000000000000000000000000000000000000001").unwrap()).unwrap(), 1u64.into());
-		assert_eq!(s.balance(&"0000000000000000000000000000000000000002".into()).unwrap(), 1u64.into());
+		assert_eq!(s.balance(&Address::from_str("0000000000000000000000000000000000000002").unwrap()).unwrap(), 1u64.into());
-		assert_eq!(s.balance(&"0000000000000000000000000000000000000003".into()).unwrap(), 1u64.into());
+		assert_eq!(s.balance(&Address::from_str("0000000000000000000000000000000000000003").unwrap()).unwrap(), 1u64.into());
-		assert_eq!(s.balance(&"0000000000000000000000000000000000000004".into()).unwrap(), 1u64.into());
+		assert_eq!(s.balance(&Address::from_str("0000000000000000000000000000000000000004").unwrap()).unwrap(), 1u64.into());
-		assert_eq!(s.balance(&"102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c".into()).unwrap(), U256::from(1u64) << 200);
+		assert_eq!(s.balance(&Address::from_str("102e61f5d8f9bc71d0ad4a084df4e65e05ce0e1c").unwrap()).unwrap(), U256::from(1u64) << 200);
-		assert_eq!(s.balance(&"0000000000000000000000000000000000000000".into()).unwrap(), 0u64.into());
+		assert_eq!(s.balance(&Address::from_str("0000000000000000000000000000000000000000").unwrap()).unwrap(), 0u64.into());
 	}
 
 	#[test]
 	fn morden() {
 		let morden = new_morden(&::std::env::temp_dir());
 
-		assert_eq!(morden.state_root(), "f3f4696bbf3b3b07775128eb7a3763279a394e382130f27c21e70233e04946a9".into());
+		assert_eq!(morden.state_root(), H256::from_str("f3f4696bbf3b3b07775128eb7a3763279a394e382130f27c21e70233e04946a9").unwrap());
 		let genesis = morden.genesis_block();
-		assert_eq!(view!(BlockView, &genesis).header_view().hash(), "0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303".into());
+		assert_eq!(view!(BlockView, &genesis).header_view().hash(), H256::from_str("0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303").unwrap());
 
 		let _ = morden.engine;
 	}
@@ -224,9 +225,9 @@ mod tests {
 	fn frontier() {
 		let frontier = new_foundation(&::std::env::temp_dir());
 
-		assert_eq!(frontier.state_root(), "d7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544".into());
+		assert_eq!(frontier.state_root(), H256::from_str("d7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544").unwrap());
 		let genesis = frontier.genesis_block();
-		assert_eq!(view!(BlockView, &genesis).header_view().hash(), "d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3".into());
+		assert_eq!(view!(BlockView, &genesis).header_view().hash(), H256::from_str("d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3").unwrap());
 
 		let _ = frontier.engine;
 	}

ethcore/src/executive.rs

@@ -16,6 +16,7 @@
 
 //! Transaction Execution environment.
 use std::cmp;
+use std::convert::TryFrom;
 use std::sync::Arc;
 use hash::keccak;
 use ethereum_types::{H256, U256, U512, Address};
@@ -858,7 +859,7 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		if !schedule.keep_unsigned_nonce || !t.is_unsigned() {
 			self.state.inc_nonce(&sender)?;
 		}
-		self.state.sub_balance(&sender, &U256::from(gas_cost), &mut substate.to_cleanup_mode(&schedule))?;
+		self.state.sub_balance(&sender, &U256::try_from(gas_cost).expect("Total cost (value + gas_cost) is lower than max allowed balance (U256); gas_cost has to fit U256; qed"), &mut substate.to_cleanup_mode(&schedule))?;
 
 		let (result, output) = match t.action {
 			Action::Create => {
@@ -1174,7 +1175,7 @@ mod tests {
 	use rustc_hex::FromHex;
 	use ethkey::{Generator, Random};
 	use super::*;
-	use ethereum_types::{H256, U256, U512, Address};
+	use ethereum_types::{H256, U256, U512, Address, BigEndianHash};
 	use vm::{ActionParams, ActionValue, CallType, EnvInfo, CreateContractAddress};
 	use evm::{Factory, VMType};
 	use error::ExecutionError;
@@ -1229,7 +1230,7 @@ mod tests {
 		};
 
 		assert_eq!(gas_left, U256::from(79_975));
-		assert_eq!(state.storage_at(&address, &H256::new()).unwrap(), H256::from(&U256::from(0xf9u64)));
+		assert_eq!(state.storage_at(&address, &H256::zero()).unwrap(), BigEndianHash::from_uint(&U256::from(0xf9u64)));
 		assert_eq!(state.balance(&sender).unwrap(), U256::from(0xf9));
 		assert_eq!(state.balance(&address).unwrap(), U256::from(0x7));
 		assert_eq!(substate.contracts_created.len(), 0);
@@ -1331,8 +1332,8 @@ mod tests {
 
 		assert_eq!(tracer.drain(), vec![FlatTrace {
 			action: trace::Action::Call(trace::Call {
-				from: "4444444444444444444444444444444444444444".into(),
+				from: Address::from_str("4444444444444444444444444444444444444444").unwrap(),
-				to: "5555555555555555555555555555555555555555".into(),
+				to: Address::from_str("5555555555555555555555555555555555555555").unwrap(),
 				value: 100.into(),
 				gas: 100_000.into(),
 				input: vec![],
@@ -1346,8 +1347,8 @@ mod tests {
 			trace_address: Default::default()
 		}, FlatTrace {
 			action: trace::Action::Call(trace::Call {
-				from: "5555555555555555555555555555555555555555".into(),
+				from: Address::from_str("5555555555555555555555555555555555555555").unwrap(),
-				to: "0000000000000000000000000000000000000003".into(),
+				to: Address::from_str("0000000000000000000000000000000000000003").unwrap(),
 				value: 1.into(),
 				gas: 66560.into(),
 				input: vec![],
@@ -1421,8 +1422,8 @@ mod tests {
 			trace_address: Default::default(),
 			subtraces: 1,
 			action: trace::Action::Call(trace::Call {
-				from: "cd1722f3947def4cf144679da39c4c32bdc35681".into(),
+				from: Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(),
-				to: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				to: Address::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(),
 				value: 100.into(),
 				gas: 100000.into(),
 				input: vec![],
@@ -1436,7 +1437,7 @@ mod tests {
 			trace_address: vec![0].into_iter().collect(),
 			subtraces: 0,
 			action: trace::Action::Create(trace::Create {
-				from: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				from: Address::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(),
 				value: 23.into(),
 				gas: 67979.into(),
 				init: vec![96, 16, 128, 96, 12, 96, 0, 57, 96, 0, 243, 0, 96, 0, 53, 84, 21, 96, 9, 87, 0, 91, 96, 32, 53, 96, 0, 53, 85]
@@ -1537,8 +1538,8 @@ mod tests {
 			trace_address: Default::default(),
 			subtraces: 1,
 			action: trace::Action::Call(trace::Call {
-				from: "cd1722f3947def4cf144679da39c4c32bdc35681".into(),
+				from: Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap(),
-				to: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				to: Address::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(),
 				value: 100.into(),
 				gas: 100_000.into(),
 				input: vec![],
@@ -1552,7 +1553,7 @@ mod tests {
 			trace_address: vec![0].into_iter().collect(),
 			subtraces: 0,
 			action: trace::Action::Create(trace::Create {
-				from: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				from: Address::from_str("b010143a42d5980c7e5ef0e4a4416dc098a4fed3").unwrap(),
 				value: 23.into(),
 				gas: 66_917.into(),
 				init: vec![0x60, 0x01, 0x60, 0x00, 0xfd]
@@ -1803,7 +1804,13 @@ mod tests {
 		};
 
 		assert_eq!(gas_left, U256::from(73_237));
-		assert_eq!(state.storage_at(&address_a, &H256::from(&U256::from(0x23))).unwrap(), H256::from(&U256::from(1)));
+		assert_eq!(
+			state.storage_at(
+				&address_a,
+				&BigEndianHash::from_uint(&U256::from(0x23)),
+			).unwrap(),
+			BigEndianHash::from_uint(&U256::from(1)),
+		);
 	}
 
 	// test is incorrect, mk
@@ -1848,8 +1855,8 @@ mod tests {
 		};
 
 		assert_eq!(gas_left, U256::from(59_870));
-		assert_eq!(state.storage_at(&address, &H256::from(&U256::zero())).unwrap(), H256::from(&U256::from(1)));
+		assert_eq!(state.storage_at(&address, &BigEndianHash::from_uint(&U256::zero())).unwrap(), BigEndianHash::from_uint(&U256::from(1)));
-		assert_eq!(state.storage_at(&address, &H256::from(&U256::one())).unwrap(), H256::from(&U256::from(1)));
+		assert_eq!(state.storage_at(&address, &BigEndianHash::from_uint(&U256::one())).unwrap(), BigEndianHash::from_uint(&U256::from(1)));
 	}
 
 	// test is incorrect, mk
@@ -1890,7 +1897,7 @@ mod tests {
 		assert_eq!(state.balance(&sender).unwrap(), U256::from(1));
 		assert_eq!(state.balance(&contract).unwrap(), U256::from(17));
 		assert_eq!(state.nonce(&sender).unwrap(), U256::from(1));
-		assert_eq!(state.storage_at(&contract, &H256::new()).unwrap(), H256::from(&U256::from(1)));
+		assert_eq!(state.storage_at(&contract, &H256::zero()).unwrap(), BigEndianHash::from_uint(&U256::from(1)));
 	}
 
 	evm_test!{test_transact_invalid_nonce: test_transact_invalid_nonce_int}
@@ -2059,17 +2066,17 @@ mod tests {
 
 		assert_eq!(result, U256::from(1));
 		assert_eq!(output[..], returns[..]);
-		assert_eq!(state.storage_at(&contract_address, &H256::from(&U256::zero())).unwrap(), H256::from(&U256::from(0)));
+		assert_eq!(state.storage_at(&contract_address, &H256::zero()).unwrap(), H256::zero());
 	}
 
 	evm_test!{test_eip1283: test_eip1283_int}
 	fn test_eip1283(factory: Factory) {
-		let x1 = Address::from(0x1000);
+		let x1 = Address::from_low_u64_be(0x1000);
-		let x2 = Address::from(0x1001);
+		let x2 = Address::from_low_u64_be(0x1001);
-		let y1 = Address::from(0x2001);
+		let y1 = Address::from_low_u64_be(0x2001);
-		let y2 = Address::from(0x2002);
+		let y2 = Address::from_low_u64_be(0x2002);
-		let operating_address = Address::from(0);
+		let operating_address = Address::zero();
-		let k = H256::new();
+		let k = H256::zero();
 
 		let mut state = get_temp_state_with_factory(factory.clone());
 		state.new_contract(&x1, U256::zero(), U256::from(1)).unwrap();
@@ -2085,7 +2092,7 @@ mod tests {
 		let machine = ::ethereum::new_constantinople_test_machine();
 		let schedule = machine.schedule(info.number);
 
-		assert_eq!(state.storage_at(&operating_address, &k).unwrap(), H256::from(U256::from(0)));
+		assert_eq!(state.storage_at(&operating_address, &k).unwrap(), BigEndianHash::from_uint(&U256::from(0)));
 		// Test a call via top-level -> y1 -> x1
 		let (FinalizationResult { gas_left, .. }, refund, gas) = {
 			let gas = U256::from(0xffffffffffu64);
@@ -2103,7 +2110,7 @@ mod tests {
 		assert_eq!(gas_used, U256::from(41860));
 		assert_eq!(refund, 19800);
 
-		assert_eq!(state.storage_at(&operating_address, &k).unwrap(), H256::from(U256::from(1)));
+		assert_eq!(state.storage_at(&operating_address, &k).unwrap(), BigEndianHash::from_uint(&U256::from(1)));
 		// Test a call via top-level -> y2 -> x2
 		let (FinalizationResult { gas_left, .. }, refund, gas) = {
 			let gas = U256::from(0xffffffffffu64);

ethcore/src/externalities.rs

@@ -17,7 +17,7 @@
 //! Transaction Execution environment.
 use std::cmp;
 use std::sync::Arc;
-use ethereum_types::{H256, U256, Address};
+use ethereum_types::{H256, U256, Address, BigEndianHash};
 use bytes::Bytes;
 use state::{Backend as StateBackend, State, Substate, CleanupMode};
 use machine::EthereumMachine as Machine;
@@ -166,6 +166,7 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 				Ok((code, hash)) => (code, hash),
 				Err(_) => return H256::zero(),
 			};
+			let data: H256 = BigEndianHash::from_uint(number);
 
 			let params = ActionParams {
 				sender: self.origin_info.address.clone(),
@@ -177,7 +178,7 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 				gas_price: 0.into(),
 				code: code,
 				code_hash: code_hash,
-				data: Some(H256::from(number).to_vec()),
+				data: Some(data.as_bytes().to_vec()),
 				call_type: CallType::Call,
 				params_type: vm::ParamsType::Separate,
 			};
@@ -185,8 +186,8 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 			let mut ex = Executive::new(self.state, self.env_info, self.machine, self.schedule);
 			let r = ex.call_with_crossbeam(params, self.substate, self.stack_depth + 1, self.tracer, self.vm_tracer);
 			let output = match &r {
-				Ok(ref r) => H256::from(&r.return_data[..32]),
+				Ok(ref r) => H256::from_slice(&r.return_data[..32]),
-				_ => H256::new(),
+				_ => H256::zero(),
 			};
 			trace!("ext: blockhash contract({}) -> {:?}({}) self.env_info.number={}\n", number, r, output, self.env_info.number);
 			output
@@ -428,6 +429,7 @@ mod tests {
 	use test_helpers::get_temp_state;
 	use super::*;
 	use trace::{NoopTracer, NoopVMTracer};
+	use std::str::FromStr;
 
 	fn get_test_origin() -> OriginInfo {
 		OriginInfo {
@@ -441,7 +443,7 @@ mod tests {
 	fn get_test_env_info() -> EnvInfo {
 		EnvInfo {
 			number: 100,
-			author: 0.into(),
+			author: Address::from_low_u64_be(0),
 			timestamp: 0,
 			difficulty: 0.into(),
 			last_hashes: Arc::new(vec![]),
@@ -509,7 +511,7 @@ mod tests {
 
 	#[test]
 	fn can_return_block_hash() {
-		let test_hash = H256::from("afafafafafafafafafafafbcbcbcbcbcbcbcbcbcbeeeeeeeeeeeeedddddddddd");
+		let test_hash = H256::from_str("afafafafafafafafafafafbcbcbcbcbcbcbcbcbcbeeeeeeeeeeeeedddddddddd").unwrap();
 		let test_env_number = 0x120001;
 
 		let mut setup = TestSetup::new();
@@ -546,11 +548,11 @@ mod tests {
 		// this should panic because we have no balance on any account
 		ext.call(
 			&"0000000000000000000000000000000000000000000000000000000000120000".parse::<U256>().unwrap(),
-			&Address::new(),
+			&Address::zero(),
-			&Address::new(),
+			&Address::zero(),
 			Some("0000000000000000000000000000000000000000000000000000000000150000".parse::<U256>().unwrap()),
 			&[],
-			&Address::new(),
+			&Address::zero(),
 			CallType::Call,
 			false,
 		).ok().unwrap();
@@ -559,7 +561,7 @@ mod tests {
 	#[test]
 	fn can_log() {
 		let log_data = vec![120u8, 110u8];
-		let log_topics = vec![H256::from("af0fa234a6af46afa23faf23bcbc1c1cb4bcb7bcbe7e7e7ee3ee2edddddddddd")];
+		let log_topics = vec![H256::from_str("af0fa234a6af46afa23faf23bcbc1c1cb4bcb7bcbe7e7e7ee3ee2edddddddddd").unwrap()];
 
 		let mut setup = TestSetup::new();
 		let state = &mut setup.state;
@@ -577,7 +579,7 @@ mod tests {
 
 	#[test]
 	fn can_suicide() {
-		let refund_account = &Address::new();
+		let refund_account = &Address::zero();
 
 		let mut setup = TestSetup::new();
 		let state = &mut setup.state;
@@ -627,7 +629,7 @@ mod tests {
 		let address = {
 			let mut ext = Externalities::new(state, &setup.env_info, &setup.machine, &setup.schedule, 0, 0, &origin_info, &mut setup.sub_state, OutputPolicy::InitContract, &mut tracer, &mut vm_tracer, false);
 
-			match ext.create(&U256::max_value(), &U256::zero(), &[], CreateContractAddress::FromSenderSaltAndCodeHash(H256::default()), false) {
+			match ext.create(&U256::max_value(), &U256::zero(), &[], CreateContractAddress::FromSenderSaltAndCodeHash(H256::zero()), false) {
 				Ok(ContractCreateResult::Created(address, _)) => address,
 				_ => panic!("Test create failed; expected Created, got Failed/Reverted."),
 			}

ethcore/src/json_tests/executive.rs

@@ -35,6 +35,7 @@ use ethtrie;
 use rlp::RlpStream;
 use hash::keccak;
 use machine::EthereumMachine as Machine;
+use ethereum_types::BigEndianHash;
 
 use super::HookType;
 
@@ -339,8 +340,8 @@ fn do_json_test_for<H: FnMut(&str, HookType)>(vm_type: &VMType, json_data: &[u8]
 					for (k, v) in account.storage {
 						let key: U256 = k.into();
 						let value: U256 = v.into();
-						let found_storage = try_fail!(state.storage_at(&address, &From::from(key)));
+						let found_storage = try_fail!(state.storage_at(&address, &BigEndianHash::from_uint(&key)));
-						fail_unless(found_storage == From::from(value), "storage is incorrect");
+						fail_unless(found_storage == BigEndianHash::from_uint(&value), "storage is incorrect");
 					}
 				}
 

ethcore/src/json_tests/test_common.rs

@@ -111,6 +111,7 @@ macro_rules! test {
 	}
 }
 
+/// Declares a test
 #[macro_export]
 macro_rules! declare_test {
 	(skip => $arr: expr, $id: ident, $name: expr) => {

ethcore/src/json_tests/trie.rs

@@ -35,7 +35,7 @@ fn test_trie<H: FnMut(&str, HookType)>(json: &[u8], trie: TrieSpec, start_stop_h
 		start_stop_hook(&name, HookType::OnStart);
 
 		let mut memdb = journaldb::new_memory_db();
-		let mut root = H256::default();
+		let mut root = H256::zero();
 		let mut t = factory.create(&mut memdb, &mut root);
 
 		for (key, value) in test.input.data.into_iter() {

ethcore/src/lib.rs

@@ -107,6 +107,8 @@ extern crate using_queue;
 extern crate vm;
 extern crate wasm;
 
+#[cfg(test)]
+extern crate rand_xorshift;
 #[cfg(test)]
 extern crate ethcore_accounts as accounts;
 #[cfg(feature = "stratum")]

ethcore/src/machine/impls.rs

@@ -60,7 +60,7 @@ impl From<::ethjson::spec::EthashParams> for EthashExtensions {
 		EthashExtensions {
 			homestead_transition: p.homestead_transition.map_or(0, Into::into),
 			dao_hardfork_transition: p.dao_hardfork_transition.map_or(u64::max_value(), Into::into),
-			dao_hardfork_beneficiary: p.dao_hardfork_beneficiary.map_or_else(Address::new, Into::into),
+			dao_hardfork_beneficiary: p.dao_hardfork_beneficiary.map_or_else(Address::zero, Into::into),
 			dao_hardfork_accounts: p.dao_hardfork_accounts.unwrap_or_else(Vec::new).into_iter().map(Into::into).collect(),
 		}
 	}
@@ -203,7 +203,7 @@ impl EthereumMachine {
 				block,
 				params.eip210_contract_address,
 				params.eip210_contract_gas,
-				Some(parent_hash.to_vec()),
+				Some(parent_hash.as_bytes().to_vec()),
 			)?;
 		}
 		Ok(())
@@ -462,12 +462,13 @@ fn round_block_gas_limit(gas_limit: U256, lower_limit: U256, upper_limit: U256)
 #[cfg(test)]
 mod tests {
 	use super::*;
+	use std::str::FromStr;
 
 	fn get_default_ethash_extensions() -> EthashExtensions {
 		EthashExtensions {
 			homestead_transition: 1150000,
 			dao_hardfork_transition: u64::max_value(),
-			dao_hardfork_beneficiary: "0000000000000000000000000000000000000001".into(),
+			dao_hardfork_beneficiary: Address::from_str("0000000000000000000000000000000000000001").unwrap(),
 			dao_hardfork_accounts: Vec::new(),
 		}
 	}

ethcore/src/miner/miner.rs

@@ -1499,7 +1499,7 @@ mod tests {
 
 		// when new block is imported
 		let client = generate_dummy_client(2);
-		let imported = [0.into()];
+		let imported = [H256::zero()];
 		let empty = &[];
 		miner.chain_new_blocks(&*client, &imported, empty, &imported, empty, false);
 
@@ -1745,7 +1745,6 @@ mod tests {
 
 	#[cfg(feature = "price-info")]
 	fn dynamic_gas_pricer() -> GasPricer {
-		use std::time::Duration;
 		use parity_runtime::Executor;
 		use fetch::Client as FetchClient;
 		use ethcore_miner::gas_price_calibrator::{GasPriceCalibrator, GasPriceCalibratorOptions};

ethcore/src/miner/stratum.rs

@@ -21,7 +21,7 @@ use std::net::{SocketAddr, AddrParseError};
 use std::fmt;
 
 use client::{Client, ImportSealedBlock};
-use ethereum_types::{H64, H256, clean_0x, U256};
+use ethereum_types::{H64, H256, U256};
 use ethash::{self, SeedHashCompute};
 #[cfg(feature = "work-notify")]
 use ethcore_miner::work_notify::NotifyWork;
@@ -47,6 +47,14 @@ pub struct Options {
 	pub secret: Option<H256>,
 }
 
+fn clean_0x(s: &str) -> &str {
+	if s.starts_with("0x") {
+		&s[2..]
+	} else {
+		s
+	}
+}
+
 struct SubmitPayload {
 	nonce: H64,
 	pow_hash: H256,

ethcore/src/pod_account.rs

@@ -20,7 +20,7 @@ use std::fmt;
 use std::collections::BTreeMap;
 use itertools::Itertools;
 use hash::{keccak};
-use ethereum_types::{H256, U256};
+use ethereum_types::{H256, U256, BigEndianHash};
 use hash_db::HashDB;
 use kvdb::DBValue;
 use keccak_hasher::KeccakHasher;
@@ -73,7 +73,7 @@ impl PodAccount {
 		let mut stream = RlpStream::new_list(4);
 		stream.append(&self.nonce);
 		stream.append(&self.balance);
-		stream.append(&sec_trie_root(self.storage.iter().map(|(k, v)| (k, rlp::encode(&U256::from(&**v))))));
+		stream.append(&sec_trie_root(self.storage.iter().map(|(k, v)| (k, rlp::encode(&v.into_uint())))));
 		stream.append(&keccak(&self.code.as_ref().unwrap_or(&vec![])));
 		stream.out()
 	}
@@ -84,10 +84,10 @@ impl PodAccount {
 			Some(ref c) if !c.is_empty() => { db.insert(c); }
 			_ => {}
 		}
-		let mut r = H256::new();
+		let mut r = H256::zero();
 		let mut t = factory.create(db, &mut r);
 		for (k, v) in &self.storage {
-			if let Err(e) = t.insert(k, &rlp::encode(&U256::from(&**v))) {
+			if let Err(e) = t.insert(k.as_bytes(), &rlp::encode(&v.into_uint())) {
 				warn!("Encountered potential DB corruption: {}", e);
 			}
 		}
@@ -103,7 +103,7 @@ impl From<ethjson::blockchain::Account> for PodAccount {
 			storage: a.storage.into_iter().map(|(key, value)| {
 				let key: U256 = key.into();
 				let value: U256 = value.into();
-				(H256::from(key), H256::from(value))
+				(BigEndianHash::from_uint(&key), BigEndianHash::from_uint(&value))
 			}).collect(),
 		}
 	}
@@ -118,7 +118,7 @@ impl From<ethjson::spec::Account> for PodAccount {
 			storage: a.storage.map_or_else(BTreeMap::new, |s| s.into_iter().map(|(key, value)| {
 				let key: U256 = key.into();
 				let value: U256 = value.into();
-				(H256::from(key), H256::from(value))
+				(BigEndianHash::from_uint(&key), BigEndianHash::from_uint(&value))
 			}).collect()),
 		}
 	}
@@ -130,7 +130,7 @@ impl fmt::Display for PodAccount {
 			self.balance,
 			self.nonce,
 			self.code.as_ref().map_or(0, |c| c.len()),
-			self.code.as_ref().map_or_else(H256::new, |c| keccak(c)),
+			self.code.as_ref().map_or_else(H256::zero, |c| keccak(c)),
 			self.storage.len(),
 		)
 	}
@@ -154,7 +154,7 @@ pub fn diff_pod(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<A
 		}),
 		(Some(pre), Some(post)) => {
 			let storage: Vec<_> = pre.storage.keys().merge(post.storage.keys())
-				.filter(|k| pre.storage.get(k).unwrap_or(&H256::new()) != post.storage.get(k).unwrap_or(&H256::new()))
+				.filter(|k| pre.storage.get(k).unwrap_or(&H256::zero()) != post.storage.get(k).unwrap_or(&H256::zero()))
 				.collect();
 			let r = AccountDiff {
 				balance: Diff::new(pre.balance, post.balance),
@@ -165,8 +165,8 @@ pub fn diff_pod(pre: Option<&PodAccount>, post: Option<&PodAccount>) -> Option<A
 				},
 				storage: storage.into_iter().map(|k|
 					(k.clone(), Diff::new(
-						pre.storage.get(k).cloned().unwrap_or_else(H256::new),
+						pre.storage.get(k).cloned().unwrap_or_else(H256::zero),
-						post.storage.get(k).cloned().unwrap_or_else(H256::new)
+						post.storage.get(k).cloned().unwrap_or_else(H256::zero)
 					))).collect(),
 			};
 			if r.balance.is_same() && r.nonce.is_same() && r.code.is_same() && r.storage.is_empty() {
@@ -184,6 +184,7 @@ mod test {
 	use std::collections::BTreeMap;
 	use types::account_diff::*;
 	use super::{PodAccount, diff_pod};
+	use ethereum_types::H256;
 
 	#[test]
 	fn existence() {
@@ -227,24 +228,40 @@ mod test {
 			balance: 0.into(),
 			nonce: 0.into(),
 			code: Some(vec![]),
-			storage: map_into![1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 0, 6 => 0, 7 => 0]
+			storage: map![
+				H256::from_low_u64_be(1) => H256::from_low_u64_be(1),
+				H256::from_low_u64_be(2) => H256::from_low_u64_be(2),
+				H256::from_low_u64_be(3) => H256::from_low_u64_be(3),
+				H256::from_low_u64_be(4) => H256::from_low_u64_be(4),
+				H256::from_low_u64_be(5) => H256::from_low_u64_be(0),
+				H256::from_low_u64_be(6) => H256::from_low_u64_be(0),
+				H256::from_low_u64_be(7) => H256::from_low_u64_be(0)
+			],
 		};
 		let b = PodAccount {
 			balance: 0.into(),
 			nonce: 0.into(),
 			code: Some(vec![]),
-			storage: map_into![1 => 1, 2 => 3, 3 => 0, 5 => 0, 7 => 7, 8 => 0, 9 => 9]
+			storage: map![
+				H256::from_low_u64_be(1) => H256::from_low_u64_be(1),
+				H256::from_low_u64_be(2) => H256::from_low_u64_be(3),
+				H256::from_low_u64_be(3) => H256::from_low_u64_be(0),
+				H256::from_low_u64_be(5) => H256::from_low_u64_be(0),
+				H256::from_low_u64_be(7) => H256::from_low_u64_be(7),
+				H256::from_low_u64_be(8) => H256::from_low_u64_be(0),
+				H256::from_low_u64_be(9) => H256::from_low_u64_be(9)
+			]
 		};
 		assert_eq!(diff_pod(Some(&a), Some(&b)), Some(AccountDiff {
 			balance: Diff::Same,
 			nonce: Diff::Same,
 			code: Diff::Same,
 			storage: map![
-				2.into() => Diff::new(2.into(), 3.into()),
+				H256::from_low_u64_be(2) => Diff::new(H256::from_low_u64_be(2), H256::from_low_u64_be(3)),
-				3.into() => Diff::new(3.into(), 0.into()),
+				H256::from_low_u64_be(3) => Diff::new(H256::from_low_u64_be(3), H256::from_low_u64_be(0)),
-				4.into() => Diff::new(4.into(), 0.into()),
+				H256::from_low_u64_be(4) => Diff::new(H256::from_low_u64_be(4), H256::from_low_u64_be(0)),
-				7.into() => Diff::new(0.into(), 7.into()),
+				H256::from_low_u64_be(7) => Diff::new(H256::from_low_u64_be(0), H256::from_low_u64_be(7)),
-				9.into() => Diff::new(0.into(), 9.into())
+				H256::from_low_u64_be(9) => Diff::new(H256::from_low_u64_be(0), H256::from_low_u64_be(9))
 			],
 		}));
 	}

ethcore/src/pod_state.rs

@@ -90,12 +90,12 @@ mod test {
 	use types::state_diff::*;
 	use types::account_diff::*;
 	use pod_account::PodAccount;
-	use super::PodState;
+	use super::{PodState, Address};
 
 	#[test]
 	fn create_delete() {
 		let a = PodState::from(map![
-			1.into() => PodAccount {
+			Address::from_low_u64_be(1) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
@@ -103,7 +103,7 @@ mod test {
 			}
 		]);
 		assert_eq!(super::diff_pod(&a, &PodState::new()), StateDiff { raw: map![
-			1.into() => AccountDiff{
+			Address::from_low_u64_be(1) => AccountDiff{
 				balance: Diff::Died(69.into()),
 				nonce: Diff::Died(0.into()),
 				code: Diff::Died(vec![]),
@@ -111,7 +111,7 @@ mod test {
 			}
 		]});
 		assert_eq!(super::diff_pod(&PodState::new(), &a), StateDiff{ raw: map![
-			1.into() => AccountDiff{
+			Address::from_low_u64_be(1) => AccountDiff{
 				balance: Diff::Born(69.into()),
 				nonce: Diff::Born(0.into()),
 				code: Diff::Born(vec![]),
@@ -123,7 +123,7 @@ mod test {
 	#[test]
 	fn create_delete_with_unchanged() {
 		let a = PodState::from(map![
-			1.into() => PodAccount {
+			Address::from_low_u64_be(1) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
@@ -131,13 +131,13 @@ mod test {
 			}
 		]);
 		let b = PodState::from(map![
-			1.into() => PodAccount {
+			Address::from_low_u64_be(1) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
 				storage: map![],
 			},
-			2.into() => PodAccount {
+			Address::from_low_u64_be(2) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
@@ -145,7 +145,7 @@ mod test {
 			}
 		]);
 		assert_eq!(super::diff_pod(&a, &b), StateDiff { raw: map![
-			2.into() => AccountDiff{
+			Address::from_low_u64_be(2) => AccountDiff{
 				balance: Diff::Born(69.into()),
 				nonce: Diff::Born(0.into()),
 				code: Diff::Born(vec![]),
@@ -153,7 +153,7 @@ mod test {
 			}
 		]});
 		assert_eq!(super::diff_pod(&b, &a), StateDiff { raw: map![
-			2.into() => AccountDiff{
+			Address::from_low_u64_be(2) => AccountDiff{
 				balance: Diff::Died(69.into()),
 				nonce: Diff::Died(0.into()),
 				code: Diff::Died(vec![]),
@@ -165,13 +165,13 @@ mod test {
 	#[test]
 	fn change_with_unchanged() {
 		let a = PodState::from(map![
-			1.into() => PodAccount {
+			Address::from_low_u64_be(1) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
 				storage: map![],
 			},
-			2.into() => PodAccount {
+			Address::from_low_u64_be(2) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
@@ -179,13 +179,13 @@ mod test {
 			}
 		]);
 		let b = PodState::from(map![
-			1.into() => PodAccount {
+			Address::from_low_u64_be(1) => PodAccount {
 				balance: 69.into(),
 				nonce: 1.into(),
 				code: Some(Vec::new()),
 				storage: map![],
 			},
-			2.into() => PodAccount {
+			Address::from_low_u64_be(2) => PodAccount {
 				balance: 69.into(),
 				nonce: 0.into(),
 				code: Some(Vec::new()),
@@ -193,7 +193,7 @@ mod test {
 			}
 		]);
 		assert_eq!(super::diff_pod(&a, &b), StateDiff { raw: map![
-			1.into() => AccountDiff{
+			Address::from_low_u64_be(1) => AccountDiff{
 				balance: Diff::Same,
 				nonce: Diff::Changed(0.into(), 1.into()),
 				code: Diff::Same,

ethcore/src/snapshot/account.rs

@@ -350,6 +350,6 @@ mod tests {
 	#[test]
 	fn encoding_empty_acc() {
 		let mut db = get_temp_state_db();
-		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &Address::default()), Rlp::new(&::rlp::NULL_RLP), H256::zero()).unwrap(), (ACC_EMPTY, None));
+		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hash_db_mut(), &Address::zero()), Rlp::new(&::rlp::NULL_RLP), H256::zero()).unwrap(), (ACC_EMPTY, None));
 	}
 }

ethcore/src/snapshot/block.rs

@@ -152,7 +152,7 @@ mod tests {
 		let encoded = encode_block(&b);
 
 		let abridged = AbridgedBlock::from_block_view(&view!(BlockView, &encoded));
-		assert_eq!(abridged.to_block(H256::new(), 0, receipts_root).unwrap(), b);
+		assert_eq!(abridged.to_block(H256::zero(), 0, receipts_root).unwrap(), b);
 	}
 
 	#[test]
@@ -163,7 +163,7 @@ mod tests {
 		let encoded = encode_block(&b);
 
 		let abridged = AbridgedBlock::from_block_view(&view!(BlockView, &encoded));
-		assert_eq!(abridged.to_block(H256::new(), 2, receipts_root).unwrap(), b);
+		assert_eq!(abridged.to_block(H256::zero(), 2, receipts_root).unwrap(), b);
 	}
 
 	#[test]
@@ -177,7 +177,7 @@ mod tests {
 			gas: U256::from(50_000),
 			value: U256::from(1),
 			data: b"Hello!".to_vec()
-		}.fake_sign(Address::from(0x69));
+		}.fake_sign(Address::from_low_u64_be(0x69));
 
 		let t2 = Transaction {
 			action: Action::Create,
@@ -186,7 +186,7 @@ mod tests {
 			gas: U256::from(300000),
 			value: U256::from(1000000000),
 			data: "Eep!".into(),
-		}.fake_sign(Address::from(0x55));
+		}.fake_sign(Address::from_low_u64_be(0x55));
 
 		b.transactions.push(t1.into());
 		b.transactions.push(t2.into());
@@ -199,6 +199,6 @@ mod tests {
 		let encoded = encode_block(&b);
 
 		let abridged = AbridgedBlock::from_block_view(&view!(BlockView, &encoded[..]));
-		assert_eq!(abridged.to_block(H256::new(), 0, receipts_root).unwrap(), b);
+		assert_eq!(abridged.to_block(H256::zero(), 0, receipts_root).unwrap(), b);
 	}
 }

ethcore/src/snapshot/consensus/work.rs

@@ -34,7 +34,7 @@ use ethereum_types::H256;
 use kvdb::KeyValueDB;
 use bytes::Bytes;
 use rlp::{RlpStream, Rlp};
-use rand::OsRng;
+use rand::rngs::OsRng;
 use types::encoded;
 
 /// Snapshot creation and restoration for PoW chains.
@@ -210,7 +210,7 @@ impl PowRebuilder {
 		Ok(PowRebuilder {
 			chain: chain,
 			db: db,
-			rng: OsRng::new()?,
+			rng: OsRng::new().map_err(|e| format!("{}", e))?,
 			disconnected: Vec::new(),
 			best_number: manifest.block_number,
 			best_hash: manifest.block_hash,

ethcore/src/snapshot/mod.rs

@@ -51,7 +51,7 @@ use super::state_db::StateDB;
 use super::state::Account as StateAccount;
 
 use crossbeam::scope;
-use rand::{Rng, OsRng};
+use rand::{Rng, rngs::OsRng};
 
 pub use self::error::Error;
 
@@ -411,7 +411,7 @@ impl StateRebuilder {
 		let mut pairs = Vec::with_capacity(rlp.item_count()?);
 
 		// initialize the pairs vector with empty values so we have slots to write into.
-		pairs.resize(rlp.item_count()?, (H256::new(), Vec::new()));
+		pairs.resize(rlp.item_count()?, (H256::zero(), Vec::new()));
 
 		let status = rebuild_accounts(
 			self.db.as_hash_db_mut(),
@@ -450,9 +450,9 @@ impl StateRebuilder {
 				if !flag.load(Ordering::SeqCst) { return Err(Error::RestorationAborted.into()) }
 
 				if &thin_rlp[..] != &empty_rlp[..] {
-					self.bloom.set(&*hash);
+					self.bloom.set(hash.as_bytes());
 				}
-				account_trie.insert(&hash, &thin_rlp)?;
+				account_trie.insert(hash.as_bytes(), &thin_rlp)?;
 			}
 		}
 

ethcore/src/snapshot/service.rs

@@ -928,9 +928,9 @@ mod tests {
 				version: 2,
 				state_hashes: state_hashes.clone(),
 				block_hashes: block_hashes.clone(),
-				state_root: H256::default(),
+				state_root: H256::zero(),
 				block_number: 100000,
-				block_hash: H256::default(),
+				block_hash: H256::zero(),
 			},
 			pruning: Algorithm::Archive,
 			db: restoration_db_handler(db_config).open(&tempdir.path().to_owned()).unwrap(),

ethcore/src/snapshot/tests/helpers.rs

@@ -124,7 +124,7 @@ pub fn fill_storage(mut db: AccountDBMut, root: &mut H256, seed: &mut H256) {
 			SecTrieDBMut::from_existing(&mut db, root).unwrap()
 		};
 
-		for (k, v) in map.make_with(seed) {
+		for (k, v) in map.make_with(&mut seed.to_fixed_bytes()) {
 			trie.insert(&k, &v).unwrap();
 		}
 	}
@@ -157,7 +157,6 @@ pub fn restore(
 	genesis: &[u8],
 ) -> Result<(), ::error::Error> {
 	use std::sync::atomic::AtomicBool;
-	use snappy;
 
 	let flag = AtomicBool::new(true);
 	let components = engine.snapshot_components().unwrap();

ethcore/src/snapshot/tests/proof_of_authority.rs

@@ -126,7 +126,7 @@ fn make_chain(accounts: Arc<AccountProvider>, blocks_beyond: usize, transitions:
 				nonce: *nonce,
 				gas_price: 1.into(),
 				gas: 21_000.into(),
-				action: Action::Call(Address::new()),
+				action: Action::Call(Address::zero()),
 				value: 1.into(),
 				data: Vec::new(),
 			}.sign(&*RICH_SECRET, client.signing_chain_id());

ethcore/src/snapshot/tests/proof_of_work.rs

@@ -119,7 +119,7 @@ fn checks_flag() {
 	let mut stream = RlpStream::new_list(5);
 
 	stream.append(&100u64)
-		.append(&H256::default())
+		.append(&H256::zero())
 		.append(&(!0u64));
 
 	stream.append_empty_data().append_empty_data();
@@ -137,7 +137,7 @@ fn checks_flag() {
 		block_hashes: Vec::new(),
 		state_root: ::hash::KECCAK_NULL_RLP,
 		block_number: 102,
-		block_hash: H256::default(),
+		block_hash: H256::zero(),
 	};
 
 	let mut rebuilder = SNAPSHOT_MODE.rebuilder(chain, db.clone(), &manifest).unwrap();

ethcore/src/snapshot/tests/state.rs

@@ -28,18 +28,21 @@ use super::helpers::StateProducer;
 
 use error::Error;
 
-use rand::{XorShiftRng, SeedableRng};
+use rand::SeedableRng;
+use rand_xorshift::XorShiftRng;
 use ethereum_types::H256;
 use journaldb::{self, Algorithm};
 use kvdb_rocksdb::{Database, DatabaseConfig};
 use parking_lot::Mutex;
 use tempdir::TempDir;
 
+const RNG_SEED: [u8; 16] = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16];
+
 #[test]
 fn snap_and_restore() {
 	use hash_db::HashDB;
 	let mut producer = StateProducer::new();
-	let mut rng = XorShiftRng::from_seed([1, 2, 3, 4]);
+	let mut rng = XorShiftRng::from_seed(RNG_SEED);
 	let mut old_db = journaldb::new_memory_db();
 	let db_cfg = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
 
@@ -65,7 +68,7 @@ fn snap_and_restore() {
 		block_hashes: Vec::new(),
 		state_root: state_root,
 		block_number: 1000,
-		block_hash: H256::default(),
+		block_hash: H256::zero(),
 	}).unwrap();
 
 	let db_path = tempdir.path().join("db");
@@ -84,7 +87,7 @@ fn snap_and_restore() {
 		}
 
 		assert_eq!(rebuilder.state_root(), state_root);
-		rebuilder.finalize(1000, H256::default()).unwrap();
+		rebuilder.finalize(1000, H256::zero()).unwrap();
 
 		new_db
 	};
@@ -157,7 +160,7 @@ fn get_code_from_prev_chunk() {
 #[test]
 fn checks_flag() {
 	let mut producer = StateProducer::new();
-	let mut rng = XorShiftRng::from_seed([5, 6, 7, 8]);
+	let mut rng = XorShiftRng::from_seed(RNG_SEED);
 	let mut old_db = journaldb::new_memory_db();
 	let db_cfg = DatabaseConfig::with_columns(::db::NUM_COLUMNS);
 
@@ -179,7 +182,7 @@ fn checks_flag() {
 		block_hashes: Vec::new(),
 		state_root: state_root,
 		block_number: 0,
-		block_hash: H256::default(),
+		block_hash: H256::zero(),
 	}).unwrap();
 
 	let tempdir = TempDir::new("").unwrap();

ethcore/src/snapshot/watcher.rs

@@ -123,7 +123,7 @@ mod tests {
 
 	use client::{ChainNotify, NewBlocks, ChainRoute};
 
-	use ethereum_types::{H256, U256};
+	use ethereum_types::{H256, U256, BigEndianHash};
 
 	use std::collections::HashMap;
 	use std::time::Duration;
@@ -151,7 +151,7 @@ mod tests {
 	fn harness(numbers: Vec<u64>, period: u64, history: u64, expected: Option<u64>) {
 		const DURATION_ZERO: Duration = Duration::from_millis(0);
 
-		let hashes: Vec<_> = numbers.clone().into_iter().map(|x| H256::from(U256::from(x))).collect();
+		let hashes: Vec<_> = numbers.clone().into_iter().map(|x| BigEndianHash::from_uint(&U256::from(x))).collect();
 		let map = hashes.clone().into_iter().zip(numbers).collect();
 
 		let watcher = Watcher {