Merge pull request #6423 from paritytech/keccak_fn

replace trait Hashable with fn keccak

Cargo.lock

@@ -196,7 +196,7 @@ name = "bloomable"
 version = "0.1.0"
 dependencies = [
  "ethcore-bigint 0.1.3",
- "tiny-keccak 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
 ]
 
 [[package]]
@@ -301,6 +301,7 @@ dependencies = [
  "bloomable 0.1.0",
  "ethcore-util 1.8.0",
  "ethjson 0.1.0",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.2.0",
  "rlp_derive 0.1.0",
@@ -481,10 +482,10 @@ name = "ethash"
 version = "1.8.0"
 dependencies = [
  "crunchy 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "primal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha3 0.1.0",
 ]
 
 [[package]]
@@ -517,6 +518,7 @@ dependencies = [
  "evm 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "hardware-wallet 1.8.0",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -654,6 +656,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "evm 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -696,6 +699,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "ethcrypto 0.1.0",
  "ethkey 0.2.0",
+ "hash 0.1.0",
  "igd 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipnetwork 0.12.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -730,6 +734,7 @@ dependencies = [
  "ethkey 0.2.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "hyper 0.10.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -758,6 +763,7 @@ dependencies = [
  "ethcore-logger 1.8.0",
  "ethcore-util 1.8.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-macros 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-tcp-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -780,6 +786,7 @@ dependencies = [
  "ethcore-bloom-journal 0.1.0",
  "ethcore-devtools 1.8.0",
  "ethcore-logger 1.8.0",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -792,7 +799,6 @@ dependencies = [
  "rust-crypto 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "sha3 0.1.0",
  "target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "tiny-keccak 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -901,6 +907,7 @@ dependencies = [
  "ethcore-network 1.8.0",
  "ethcore-util 1.8.0",
  "ethkey 0.2.0",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipnetwork 0.12.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -923,6 +930,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "ethjson 0.1.0",
  "evmjit 1.8.0",
+ "hash 0.1.0",
  "heapsize 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1066,6 +1074,16 @@ dependencies = [
  "rustc-hex 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "hash"
+version = "0.1.0"
+dependencies = [
+ "ethcore-bigint 0.1.3",
+ "gcc 0.3.51 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempdir 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tiny-keccak 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "heapsize"
 version = "0.4.0"
@@ -1851,6 +1869,7 @@ dependencies = [
  "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "ipnetwork 0.12.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "isatty 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -1898,6 +1917,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "fetch 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -1943,6 +1963,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "fetch 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime_guess 1.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2010,6 +2031,7 @@ dependencies = [
  "fetch 0.1.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-cpupool 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "itertools 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-http-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
@@ -2046,6 +2068,7 @@ version = "1.4.0"
 dependencies = [
  "ethcore-util 1.8.0",
  "futures 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hash 0.1.0",
  "jsonrpc-core 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "jsonrpc-ws-server 7.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.7)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2694,13 +2717,6 @@ name = "sha1"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "sha3"
-version = "0.1.0"
-dependencies = [
- "gcc 0.3.51 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "shell32-sys"
 version = "0.1.1"
@@ -3185,6 +3201,7 @@ dependencies = [
  "ethcore-util 1.8.0",
  "ethjson 0.1.0",
  "evmjit 1.8.0",
+ "hash 0.1.0",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rlp 0.2.0",

Cargo.toml

@@ -57,6 +57,7 @@ parity-updater = { path = "updater" }
 parity-whisper = { path = "whisper" }
 path = { path = "util/path" }
 panic_hook = { path = "panic_hook" }
+hash = { path = "util/hash" }
 
 parity-dapps = { path = "dapps", optional = true }
 clippy = { version = "0.0.103", optional = true}

dapps/Cargo.toml

@@ -35,6 +35,7 @@ node-health = { path = "./node-health" }
 parity-hash-fetch = { path = "../hash-fetch" }
 parity-reactor = { path = "../util/reactor" }
 parity-ui = { path = "./ui" }
+hash = { path = "../util/hash" }
 
 clippy = { version = "0.0.103", optional = true}
 

dapps/src/apps/fetcher/installers.rs

@@ -19,9 +19,9 @@ use std::{fs, fmt};
 use std::io::{self, Read, Write};
 use std::path::PathBuf;
 use fetch::{self, Mime};
+use hash::keccak_buffer;
 use util::H256;
 
-use util::sha3::sha3;
 use page::{LocalPageEndpoint, PageCache};
 use handlers::{ContentValidator, ValidatorResponse};
 use apps::manifest::{MANIFEST_FILENAME, deserialize_manifest, serialize_manifest, Manifest};
@@ -57,9 +57,9 @@ fn write_response_and_check_hash(
 	file.flush()?;
 
 	// Validate hash
-	// TODO [ToDr] calculate sha3 in-flight while reading the response
+	// TODO [ToDr] calculate keccak in-flight while reading the response
 	let mut file = io::BufReader::new(fs::File::open(&content_path)?);
-	let hash = sha3(&mut file)?;
+	let hash = keccak_buffer(&mut file)?;
 	if id == hash {
 		Ok((file.into_inner(), content_path))
 	} else {

dapps/src/lib.rs

@@ -43,6 +43,7 @@ extern crate parity_dapps_glue as parity_dapps;
 extern crate parity_hash_fetch as hash_fetch;
 extern crate parity_reactor;
 extern crate parity_ui;
+extern crate hash;
 
 #[macro_use]
 extern crate log;

ethash/Cargo.toml

@@ -7,10 +7,10 @@ authors = ["Parity Technologies <admin@parity.io>"]
 
 [dependencies]
 log = "0.3"
-sha3 = { path = "../util/sha3" }
+hash = { path = "../util/hash" }
 primal = "0.2.3"
 parking_lot = "0.4"
 crunchy = "0.1.0"
 
 [features]
-benches = []
+benches = []

ethash/src/compute.rs

@@ -23,7 +23,7 @@ use primal::is_prime;
 use std::cell::Cell;
 use std::mem;
 use std::ptr;
-use sha3;
+use hash;
 use std::slice;
 use std::path::{Path, PathBuf};
 use std::io::{self, Read, Write};
@@ -200,7 +200,7 @@ impl SeedHashCompute {
 	#[inline]
 	pub fn resume_compute_seedhash(mut hash: H256, start_epoch: u64, end_epoch: u64) -> H256 {
 		for _ in start_epoch..end_epoch {
-			unsafe { sha3::sha3_256(hash[..].as_mut_ptr(), 32, hash[..].as_ptr(), 32) };
+			unsafe { hash::keccak_256(hash[..].as_mut_ptr(), 32, hash[..].as_ptr(), 32) };
 		}
 		hash
 	}
@@ -214,14 +214,14 @@ fn fnv_hash(x: u32, y: u32) -> u32 {
 	return x.wrapping_mul(FNV_PRIME) ^ y;
 }
 
-fn sha3_512(input: &[u8], output: &mut [u8]) {
+fn keccak_512(input: &[u8], output: &mut [u8]) {
-	unsafe { sha3::sha3_512(output.as_mut_ptr(), output.len(), input.as_ptr(), input.len()) };
+	unsafe { hash::keccak_512(output.as_mut_ptr(), output.len(), input.as_ptr(), input.len()) };
 }
 
-fn sha3_512_inplace(input: &mut [u8]) {
+fn keccak_512_inplace(input: &mut [u8]) {
-	// This is safe since `sha3_*` uses an internal buffer and copies the result to the output. This
+	// This is safe since `keccak_*` uses an internal buffer and copies the result to the output. This
 	// means that we can reuse the input buffer for both input and output.
-	unsafe { sha3::sha3_512(input.as_mut_ptr(), input.len(), input.as_ptr(), input.len()) };
+	unsafe { hash::keccak_512(input.as_mut_ptr(), input.len(), input.as_ptr(), input.len()) };
 }
 
 fn get_cache_size(block_number: u64) -> usize {
@@ -250,23 +250,23 @@ fn get_data_size(block_number: u64) -> usize {
 /// Boundary recovered from mix hash
 pub fn quick_get_difficulty(header_hash: &H256, nonce: u64, mix_hash: &H256) -> H256 {
 	unsafe {
-		// This is safe - the `sha3_512` call below reads the first 40 bytes (which we explicitly set
+		// This is safe - the `keccak_512` call below reads the first 40 bytes (which we explicitly set
 		// with two `copy_nonoverlapping` calls) but writes the first 64, and then we explicitly write
-		// the next 32 bytes before we read the whole thing with `sha3_256`.
+		// the next 32 bytes before we read the whole thing with `keccak_256`.
 		//
 		// This cannot be elided by the compiler as it doesn't know the implementation of
-		// `sha3_512`.
+		// `keccak_512`.
 		let mut buf: [u8; 64 + 32] = mem::uninitialized();
 
 		ptr::copy_nonoverlapping(header_hash.as_ptr(), buf.as_mut_ptr(), 32);
 		ptr::copy_nonoverlapping(mem::transmute(&nonce), buf[32..].as_mut_ptr(), 8);
 
-		sha3::sha3_512(buf.as_mut_ptr(), 64, buf.as_ptr(), 40);
+		hash::keccak_512(buf.as_mut_ptr(), 64, buf.as_ptr(), 40);
 		ptr::copy_nonoverlapping(mix_hash.as_ptr(), buf[64..].as_mut_ptr(), 32);
 
-		// This is initialized in `sha3_256`
+		// This is initialized in `keccak_256`
 		let mut hash: [u8; 32] = mem::uninitialized();
-		sha3::sha3_256(hash.as_mut_ptr(), hash.len(), buf.as_ptr(), buf.len());
+		hash::keccak_256(hash.as_mut_ptr(), hash.len(), buf.as_ptr(), buf.len());
 
 		hash
 	}
@@ -320,7 +320,7 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
 		half_mix: unsafe {
 			// Pack `header_hash` and `nonce` together
 			// We explicitly write the first 40 bytes, leaving the last 24 as uninitialized. Then
-			// `sha3_512` reads the first 40 bytes (4th parameter) and overwrites the entire array,
+			// `keccak_512` reads the first 40 bytes (4th parameter) and overwrites the entire array,
 			// leaving it fully initialized.
 			let mut out: [u8; NODE_BYTES] = mem::uninitialized();
 
@@ -335,8 +335,8 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
 				mem::size_of::<u64>(),
 			);
 
-			// compute sha3-512 hash and replicate across mix
+			// compute keccak-512 hash and replicate across mix
-			sha3::sha3_512(
+			hash::keccak_512(
 				out.as_mut_ptr(),
 				NODE_BYTES,
 				out.as_ptr(),
@@ -427,10 +427,10 @@ fn hash_compute(light: &Light, full_size: usize, header_hash: &H256, nonce: u64)
 	let value: H256 = unsafe {
 		// We can interpret the buffer as an array of `u8`s, since it's `repr(C)`.
 		let read_ptr: *const u8 = mem::transmute(&buf);
-		// We overwrite the second half since `sha3_256` has an internal buffer and so allows
+		// We overwrite the second half since `keccak_256` has an internal buffer and so allows
 		// overlapping arrays as input.
 		let write_ptr: *mut u8 = mem::transmute(&mut buf.compress_bytes);
-		sha3::sha3_256(
+		hash::keccak_256(
 			write_ptr,
 			buf.compress_bytes.len(),
 			read_ptr,
@@ -450,7 +450,7 @@ fn calculate_dag_item(node_index: u32, cache: &[Node]) -> Node {
 	let mut ret = cache[node_index as usize % num_parent_nodes].clone();
 	ret.as_words_mut()[0] ^= node_index;
 
-	sha3_512_inplace(&mut ret.bytes);
+	keccak_512_inplace(&mut ret.bytes);
 
 	debug_assert_eq!(NODE_WORDS, 16);
 	for i in 0..ETHASH_DATASET_PARENTS as u32 {
@@ -467,7 +467,7 @@ fn calculate_dag_item(node_index: u32, cache: &[Node]) -> Node {
 		}
 	}
 
-	sha3_512_inplace(&mut ret.bytes);
+	keccak_512_inplace(&mut ret.bytes);
 
 	ret
 }
@@ -485,9 +485,9 @@ fn light_new<T: AsRef<Path>>(cache_dir: T, block_number: u64) -> Light {
 		// Use uninit instead of unnecessarily writing `size_of::<Node>() * num_nodes` 0s
 		nodes.set_len(num_nodes);
 
-		sha3_512(&seedhash[0..32], &mut nodes.get_unchecked_mut(0).bytes);
+		keccak_512(&seedhash[0..32], &mut nodes.get_unchecked_mut(0).bytes);
 		for i in 1..num_nodes {
-			sha3::sha3_512(nodes.get_unchecked_mut(i).bytes.as_mut_ptr(), NODE_BYTES, nodes.get_unchecked(i - 1).bytes.as_ptr(), NODE_BYTES);
+			hash::keccak_512(nodes.get_unchecked_mut(i).bytes.as_mut_ptr(), NODE_BYTES, nodes.get_unchecked(i - 1).bytes.as_ptr(), NODE_BYTES);
 		}
 
 		debug_assert_eq!(NODE_WORDS, 16);
@@ -504,7 +504,7 @@ fn light_new<T: AsRef<Path>>(cache_dir: T, block_number: u64) -> Light {
 					}
 				}
 
-				sha3_512(&data.bytes, &mut nodes.get_unchecked_mut(i).bytes);
+				keccak_512(&data.bytes, &mut nodes.get_unchecked_mut(i).bytes);
 			}
 		}
 	}

ethash/src/lib.rs

@@ -20,7 +20,7 @@
 #![cfg_attr(feature = "benches", feature(test))]
 
 extern crate primal;
-extern crate sha3;
+extern crate hash;
 extern crate parking_lot;
 
 #[macro_use]

ethcore/Cargo.toml

@@ -60,6 +60,7 @@ table = { path = "../util/table" }
 bloomable = { path = "../util/bloomable" }
 vm = { path = "vm" }
 wasm = { path = "wasm" }
+hash = { path = "../util/hash" }
 
 [dev-dependencies]
 native-contracts = { path = "native_contracts", features = ["test_contracts"] }

ethcore/evm/Cargo.toml

@@ -18,6 +18,7 @@ vm = { path = "../vm" }
 parity-wasm = "0.12"
 ethcore-logger = { path = "../../logger" }
 wasm-utils = { git = "https://github.com/paritytech/wasm-utils" }
+hash = { path = "../../util/hash" }
 
 [dev-dependencies]
 rustc-hex = "1.0"

ethcore/evm/src/interpreter/mod.rs

@@ -26,6 +26,7 @@ mod shared_cache;
 use std::marker::PhantomData;
 use std::{cmp, mem};
 use std::sync::Arc;
+use hash::keccak;
 
 use vm::{
 	self, ActionParams, ActionValue, CallType, MessageCallResult,
@@ -180,7 +181,7 @@ impl<Cost: CostType> vm::Vm for Interpreter<Cost> {
 			match result {
 				InstructionResult::JumpToPosition(position) => {
 					if valid_jump_destinations.is_none() {
-						let code_hash = params.code_hash.clone().unwrap_or_else(|| code.sha3());
+						let code_hash = params.code_hash.clone().unwrap_or_else(|| keccak(code.as_ref()));
 						valid_jump_destinations = Some(self.cache.jump_destinations(&code_hash, code));
 					}
 					let jump_destinations = valid_jump_destinations.as_ref().expect("jump_destinations are initialized on first jump; qed");
@@ -464,8 +465,8 @@ impl<Cost: CostType> Interpreter<Cost> {
 			instructions::SHA3 => {
 				let offset = stack.pop_back();
 				let size = stack.pop_back();
-				let sha3 = self.mem.read_slice(offset, size).sha3();
+				let k = keccak(self.mem.read_slice(offset, size));
-				stack.push(U256::from(&*sha3));
+				stack.push(U256::from(&*k));
 			},
 			instructions::SLOAD => {
 				let key = H256::from(&stack.pop_back());
@@ -880,7 +881,7 @@ mod tests {
 	use rustc_hex::FromHex;
 	use vmtype::VMType;
 	use factory::Factory;
-	use vm::{self, ActionParams, ActionValue};
+	use vm::{ActionParams, ActionValue};
 	use vm::tests::{FakeExt, test_finalize};
 
 	#[test]

ethcore/evm/src/interpreter/shared_cache.rs

@@ -15,9 +15,9 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use std::sync::Arc;
+use hash::KECCAK_EMPTY;
 use heapsize::HeapSizeOf;
 use util::{H256, Mutex};
-use util::sha3::*;
 use util::cache::MemoryLruCache;
 use bit_set::BitSet;
 use super::super::instructions;
@@ -50,7 +50,7 @@ impl SharedCache {
 
 	/// Get jump destinations bitmap for a contract.
 	pub fn jump_destinations(&self, code_hash: &H256, code: &[u8]) -> Arc<BitSet> {
-		if code_hash == &SHA3_EMPTY {
+		if code_hash == &KECCAK_EMPTY {
 			return Self::find_jump_destinations(code);
 		}
 

ethcore/evm/src/lib.rs

@@ -27,6 +27,7 @@ extern crate wasm_utils;
 extern crate ethcore_logger;
 extern crate heapsize;
 extern crate vm;
+extern crate hash;
 
 #[macro_use]
 extern crate lazy_static;

ethcore/light/Cargo.toml

@@ -32,6 +32,7 @@ bincode = "0.8.0"
 serde = "1.0"
 serde_derive = "1.0"
 stats = { path = "../../util/stats" }
+hash = { path = "../../util/hash" }
 
 [features]
 default = []

ethcore/light/src/client/header_chain.rs

@@ -487,7 +487,7 @@ impl HeaderChain {
 
 	/// Get the genesis hash.
 	pub fn genesis_hash(&self) -> H256 {
-		::util::Hashable::sha3(&self.genesis_header)
+		self.genesis_header.hash()
 	}
 
 	/// Get the best block's data.

ethcore/light/src/lib.rs

@@ -84,6 +84,7 @@ extern crate smallvec;
 extern crate stats;
 extern crate time;
 extern crate vm;
+extern crate hash;
 
 #[cfg(feature = "ipc")]
 extern crate ethcore_ipc as ipc;

ethcore/light/src/on_demand/request.rs

@@ -25,13 +25,13 @@ use ethcore::receipt::Receipt;
 use ethcore::state::{self, ProvedExecution};
 use ethcore::transaction::SignedTransaction;
 use vm::EnvInfo;
+use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY, KECCAK_EMPTY_LIST_RLP, keccak};
 
 use request::{self as net_request, IncompleteRequest, CompleteRequest, Output, OutputKind, Field};
 
 use rlp::{RlpStream, UntrustedRlp};
 use util::{Address, Bytes, DBValue, HashDB, Mutex, H256, U256};
 use util::memorydb::MemoryDB;
-use util::sha3::{Hashable, SHA3_NULL_RLP, SHA3_EMPTY, SHA3_EMPTY_LIST_RLP};
 use util::trie::{Trie, TrieDB, TrieError};
 
 const SUPPLIED_MATCHES: &'static str = "supplied responses always match produced requests; enforced by `check_response`; qed";
@@ -276,7 +276,7 @@ impl From<Request> for CheckedRequest {
 			Request::Account(req) => {
 				let net_req = net_request::IncompleteAccountRequest {
 					block_hash: req.header.field(),
-					address_hash: ::util::Hashable::sha3(&req.address).into(),
+					address_hash: ::hash::keccak(&req.address).into(),
 				};
 				CheckedRequest::Account(req, net_req)
 			}
@@ -366,7 +366,7 @@ impl CheckedRequest {
 			}
 			CheckedRequest::Receipts(ref check, ref req) => {
 				// empty transactions -> no receipts
-				if check.0.as_ref().ok().map_or(false, |hdr| hdr.receipts_root() == SHA3_NULL_RLP) {
+				if check.0.as_ref().ok().map_or(false, |hdr| hdr.receipts_root() == KECCAK_NULL_RLP) {
 					return Some(Response::Receipts(Vec::new()));
 				}
 
@@ -377,7 +377,7 @@ impl CheckedRequest {
 			CheckedRequest::Body(ref check, ref req) => {
 				// check for empty body.
 				if let Some(hdr) = check.0.as_ref().ok() {
-					if hdr.transactions_root() == SHA3_NULL_RLP && hdr.uncles_hash() == SHA3_EMPTY_LIST_RLP {
+					if hdr.transactions_root() == KECCAK_NULL_RLP && hdr.uncles_hash() == KECCAK_EMPTY_LIST_RLP {
 						let mut stream = RlpStream::new_list(3);
 						stream.append_raw(hdr.rlp().as_raw(), 1);
 						stream.begin_list(0);
@@ -422,7 +422,7 @@ impl CheckedRequest {
 					})
 			}
 			CheckedRequest::Code(_, ref req) => {
-				if req.code_hash.as_ref().map_or(false, |&h| h == SHA3_EMPTY) {
+				if req.code_hash.as_ref().map_or(false, |&h| h == KECCAK_EMPTY) {
 					Some(Response::Code(Vec::new()))
 				} else {
 					None
@@ -571,8 +571,8 @@ impl net_request::ResponseLike for Response {
 		match *self {
 			Response::HeaderProof((ref hash, _)) => f(0, Output::Hash(*hash)),
 			Response::Account(None) => {
-				f(0, Output::Hash(SHA3_EMPTY)); // code hash
+				f(0, Output::Hash(KECCAK_EMPTY)); // code hash
-				f(1, Output::Hash(SHA3_NULL_RLP)); // storage root.
+				f(1, Output::Hash(KECCAK_NULL_RLP)); // storage root.
 			}
 			Response::Account(Some(ref acc)) => {
 				f(0, Output::Hash(acc.code_hash));
@@ -688,7 +688,7 @@ impl HeaderByHash {
 		};
 
 		let header = headers.get(0).ok_or(Error::Empty)?;
-		let hash = header.sha3();
+		let hash = header.hash();
 		match hash == expected_hash {
 			true => {
 				cache.lock().insert_block_header(hash, header.clone());
@@ -713,7 +713,7 @@ impl Body {
 			return Err(Error::WrongTrieRoot(header.transactions_root(), tx_root));
 		}
 
-		let uncles_hash = body.rlp().at(1).as_raw().sha3();
+		let uncles_hash = keccak(body.rlp().at(1).as_raw());
 		if uncles_hash != header.uncles_hash() {
 			return Err(Error::WrongHash(header.uncles_hash(), uncles_hash));
 		}
@@ -768,7 +768,7 @@ impl Account {
 		let mut db = MemoryDB::new();
 		for node in proof { db.insert(&node[..]); }
 
-		match TrieDB::new(&db, &state_root).and_then(|t| t.get(&self.address.sha3()))? {
+		match TrieDB::new(&db, &state_root).and_then(|t| t.get(&keccak(&self.address)))? {
 			Some(val) => {
 				let rlp = UntrustedRlp::new(&val);
 				Ok(Some(BasicAccount {
@@ -800,7 +800,7 @@ impl Code {
 		code_hash: &H256,
 		code: &[u8]
 	) -> Result<Vec<u8>, Error> {
-		let found_hash = code.sha3();
+		let found_hash = keccak(code);
 		if &found_hash == code_hash {
 			Ok(code.to_vec())
 		} else {
@@ -853,6 +853,7 @@ mod tests {
 	use util::{MemoryDB, Address, Mutex, H256};
 	use util::trie::{Trie, TrieMut, SecTrieDB, SecTrieDBMut};
 	use util::trie::recorder::Recorder;
+	use hash::keccak;
 
 	use ethcore::client::{BlockChainClient, TestBlockChainClient, EachBlockWith};
 	use ethcore::header::Header;
@@ -998,7 +999,7 @@ mod tests {
 	#[test]
 	fn check_code() {
 		let code = vec![1u8; 256];
-		let code_hash = ::util::Hashable::sha3(&code);
+		let code_hash = keccak(&code);
 		let header = Header::new();
 		let req = Code {
 			header: encoded::Header::new(::rlp::encode(&header).into_vec()).into(),

ethcore/src/account_db.rs

@@ -16,6 +16,7 @@
 
 //! DB backend wrapper for Account trie
 use std::collections::HashMap;
+use hash::{KECCAK_NULL_RLP, keccak};
 use util::*;
 use rlp::NULL_RLP;
 
@@ -79,7 +80,7 @@ impl<'db> AccountDB<'db> {
 	/// Create a new AccountDB from an address.
 	#[cfg(test)]
 	pub fn new(db: &'db HashDB, address: &Address) -> Self {
-		Self::from_hash(db, address.sha3())
+		Self::from_hash(db, keccak(address))
 	}
 
 	/// Create a new AcountDB from an address' hash.
@@ -97,14 +98,14 @@ impl<'db> HashDB for AccountDB<'db>{
 	}
 
 	fn get(&self, key: &H256) -> Option<DBValue> {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return Some(DBValue::from_slice(&NULL_RLP));
 		}
 		self.db.get(&combine_key(&self.address_hash, key))
 	}
 
 	fn contains(&self, key: &H256) -> bool {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return true;
 		}
 		self.db.contains(&combine_key(&self.address_hash, key))
@@ -133,7 +134,7 @@ impl<'db> AccountDBMut<'db> {
 	/// Create a new AccountDB from an address.
 	#[cfg(test)]
 	pub fn new(db: &'db mut HashDB, address: &Address) -> Self {
-		Self::from_hash(db, address.sha3())
+		Self::from_hash(db, keccak(address))
 	}
 
 	/// Create a new AcountDB from an address' hash.
@@ -156,14 +157,14 @@ impl<'db> HashDB for AccountDBMut<'db>{
 	}
 
 	fn get(&self, key: &H256) -> Option<DBValue> {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return Some(DBValue::from_slice(&NULL_RLP));
 		}
 		self.db.get(&combine_key(&self.address_hash, key))
 	}
 
 	fn contains(&self, key: &H256) -> bool {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return true;
 		}
 		self.db.contains(&combine_key(&self.address_hash, key))
@@ -171,16 +172,16 @@ impl<'db> HashDB for AccountDBMut<'db>{
 
 	fn insert(&mut self, value: &[u8]) -> H256 {
 		if value == &NULL_RLP {
-			return SHA3_NULL_RLP.clone();
+			return KECCAK_NULL_RLP.clone();
 		}
-		let k = value.sha3();
+		let k = keccak(value);
 		let ak = combine_key(&self.address_hash, &k);
 		self.db.emplace(ak, DBValue::from_slice(value));
 		k
 	}
 
 	fn emplace(&mut self, key: H256, value: DBValue) {
-		if key == SHA3_NULL_RLP {
+		if key == KECCAK_NULL_RLP {
 			return;
 		}
 		let key = combine_key(&self.address_hash, &key);
@@ -188,7 +189,7 @@ impl<'db> HashDB for AccountDBMut<'db>{
 	}
 
 	fn remove(&mut self, key: &H256) {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return;
 		}
 		let key = combine_key(&self.address_hash, key);
@@ -204,14 +205,14 @@ impl<'db> HashDB for Wrapping<'db> {
 	}
 
 	fn get(&self, key: &H256) -> Option<DBValue> {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return Some(DBValue::from_slice(&NULL_RLP));
 		}
 		self.0.get(key)
 	}
 
 	fn contains(&self, key: &H256) -> bool {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return true;
 		}
 		self.0.contains(key)
@@ -238,14 +239,14 @@ impl<'db> HashDB for WrappingMut<'db>{
 	}
 
 	fn get(&self, key: &H256) -> Option<DBValue> {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return Some(DBValue::from_slice(&NULL_RLP));
 		}
 		self.0.get(key)
 	}
 
 	fn contains(&self, key: &H256) -> bool {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return true;
 		}
 		self.0.contains(key)
@@ -253,20 +254,20 @@ impl<'db> HashDB for WrappingMut<'db>{
 
 	fn insert(&mut self, value: &[u8]) -> H256 {
 		if value == &NULL_RLP {
-			return SHA3_NULL_RLP.clone();
+			return KECCAK_NULL_RLP.clone();
 		}
 		self.0.insert(value)
 	}
 
 	fn emplace(&mut self, key: H256, value: DBValue) {
-		if key == SHA3_NULL_RLP {
+		if key == KECCAK_NULL_RLP {
 			return;
 		}
 		self.0.emplace(key, value)
 	}
 
 	fn remove(&mut self, key: &H256) {
-		if key == &SHA3_NULL_RLP {
+		if key == &KECCAK_NULL_RLP {
 			return;
 		}
 		self.0.remove(key)

ethcore/src/block.rs

@@ -19,9 +19,10 @@
 use std::cmp;
 use std::sync::Arc;
 use std::collections::HashSet;
+use hash::{keccak, KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP};
 
 use rlp::{UntrustedRlp, RlpStream, Encodable, Decodable, DecoderError};
-use util::{Bytes, Address, Hashable, U256, H256, ordered_trie_root, SHA3_NULL_RLP, SHA3_EMPTY_LIST_RLP};
+use util::{Bytes, Address, U256, H256, ordered_trie_root};
 use util::error::{Mismatch, OutOfBounds};
 
 use basic_types::{LogBloom, Seal};
@@ -398,13 +399,13 @@ impl<'x> OpenBlock<'x> {
 		if let Err(e) = s.engine.on_close_block(&mut s.block) {
 			warn!("Encountered error on closing the block: {}", e);
 		}
-		
+
 		if let Err(e) = s.block.state.commit() {
 			warn!("Encountered error on state commit: {}", e);
 		}
 		s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes().into_vec())));
 		let uncle_bytes = s.block.uncles.iter().fold(RlpStream::new_list(s.block.uncles.len()), |mut s, u| {s.append_raw(&u.rlp(Seal::With), 1); s} ).out();
-		s.block.header.set_uncles_hash(uncle_bytes.sha3());
+		s.block.header.set_uncles_hash(keccak(&uncle_bytes));
 		s.block.header.set_state_root(s.block.state.root().clone());
 		s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes().into_vec())));
 		s.block.header.set_log_bloom(s.block.receipts.iter().fold(LogBloom::zero(), |mut b, r| {b = &b | &r.log_bloom; b})); //TODO: use |= operator
@@ -429,14 +430,14 @@ impl<'x> OpenBlock<'x> {
 		if let Err(e) = s.block.state.commit() {
 			warn!("Encountered error on state commit: {}", e);
 		}
-		if s.block.header.transactions_root().is_zero() || s.block.header.transactions_root() == &SHA3_NULL_RLP {
+		if s.block.header.transactions_root().is_zero() || s.block.header.transactions_root() == &KECCAK_NULL_RLP {
 			s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes().into_vec())));
 		}
 		let uncle_bytes = s.block.uncles.iter().fold(RlpStream::new_list(s.block.uncles.len()), |mut s, u| {s.append_raw(&u.rlp(Seal::With), 1); s} ).out();
-		if s.block.header.uncles_hash().is_zero() || s.block.header.uncles_hash() == &SHA3_EMPTY_LIST_RLP {
+		if s.block.header.uncles_hash().is_zero() || s.block.header.uncles_hash() == &KECCAK_EMPTY_LIST_RLP {
-			s.block.header.set_uncles_hash(uncle_bytes.sha3());
+			s.block.header.set_uncles_hash(keccak(&uncle_bytes));
 		}
-		if s.block.header.receipts_root().is_zero() || s.block.header.receipts_root() == &SHA3_NULL_RLP {
+		if s.block.header.receipts_root().is_zero() || s.block.header.receipts_root() == &KECCAK_NULL_RLP {
 			s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes().into_vec())));
 		}
 
@@ -469,7 +470,7 @@ impl<'x> IsBlock for LockedBlock {
 
 impl ClosedBlock {
 	/// Get the hash of the header without seal arguments.
-	pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
+	pub fn hash(&self) -> H256 { self.header().rlp_keccak(Seal::Without) }
 
 	/// Turn this into a `LockedBlock`, unable to be reopened again.
 	pub fn lock(self) -> LockedBlock {
@@ -494,7 +495,7 @@ impl ClosedBlock {
 
 impl LockedBlock {
 	/// Get the hash of the header without seal arguments.
-	pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
+	pub fn hash(&self) -> H256 { self.header().rlp_keccak(Seal::Without) }
 
 	/// Provide a valid seal in order to turn this into a `SealedBlock`.
 	///

ethcore/src/blockchain/blockchain.rs

@@ -512,7 +512,7 @@ impl BlockChain {
 				// we need to insert genesis into the cache
 				let block = BlockView::new(genesis);
 				let header = block.header_view();
-				let hash = block.sha3();
+				let hash = block.hash();
 
 				let details = BlockDetails {
 					number: header.number(),
@@ -764,7 +764,7 @@ impl BlockChain {
 	pub fn insert_unordered_block(&self, batch: &mut DBTransaction, bytes: &[u8], receipts: Vec<Receipt>, parent_td: Option<U256>, is_best: bool, is_ancient: bool) -> bool {
 		let block = BlockView::new(bytes);
 		let header = block.header_view();
-		let hash = header.sha3();
+		let hash = header.hash();
 
 		if self.is_known(&hash) {
 			return false;
@@ -966,7 +966,7 @@ impl BlockChain {
 		// create views onto rlp
 		let block = BlockView::new(bytes);
 		let header = block.header_view();
-		let hash = header.sha3();
+		let hash = header.hash();
 
 		if self.is_known_child(&header.parent_hash(), &hash) {
 			return ImportRoute::none();
@@ -1005,7 +1005,7 @@ impl BlockChain {
 
 	/// Get inserted block info which is critical to prepare extras updates.
 	fn block_info(&self, header: &HeaderView) -> BlockInfo {
-		let hash = header.sha3();
+		let hash = header.hash();
 		let number = header.number();
 		let parent_hash = header.parent_hash();
 		let parent_details = self.block_details(&parent_hash).unwrap_or_else(|| panic!("Invalid parent hash: {:?}", parent_hash));
@@ -1466,9 +1466,9 @@ mod tests {
 	#![cfg_attr(feature="dev", allow(similar_names))]
 	use std::sync::Arc;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use util::kvdb::KeyValueDB;
 	use util::hash::*;
-	use util::sha3::Hashable;
 	use receipt::Receipt;
 	use blockchain::{BlockProvider, BlockChain, Config, ImportRoute};
 	use tests::helpers::*;
@@ -1518,8 +1518,8 @@ mod tests {
 		let mut finalizer = BlockFinalizer::default();
 		let genesis = canon_chain.generate(&mut finalizer).unwrap();
 		let first = canon_chain.generate(&mut finalizer).unwrap();
-		let genesis_hash = BlockView::new(&genesis).header_view().sha3();
+		let genesis_hash = BlockView::new(&genesis).header_view().hash();
-		let first_hash = BlockView::new(&first).header_view().sha3();
+		let first_hash = BlockView::new(&first).header_view().hash();
 
 		let db = new_db();
 		let bc = new_chain(&genesis, db.clone());
@@ -1549,7 +1549,7 @@ mod tests {
 		let mut canon_chain = ChainGenerator::default();
 		let mut finalizer = BlockFinalizer::default();
 		let genesis = canon_chain.generate(&mut finalizer).unwrap();
-		let genesis_hash = BlockView::new(&genesis).header_view().sha3();
+		let genesis_hash = BlockView::new(&genesis).header_view().hash();
 
 		let db = new_db();
 		let bc = new_chain(&genesis, db.clone());
@@ -1558,7 +1558,7 @@ mod tests {
 		let mut batch = db.transaction();
 		for _ in 0..10 {
 			let block = canon_chain.generate(&mut finalizer).unwrap();
-			block_hashes.push(BlockView::new(&block).header_view().sha3());
+			block_hashes.push(BlockView::new(&block).header_view().hash());
 			bc.insert_block(&mut batch, &block, vec![]);
 			bc.commit();
 		}
@@ -1607,14 +1607,14 @@ mod tests {
 
 		assert_eq!(
 			[&b4b, &b3b, &b2b].iter().map(|b| BlockView::new(b).header()).collect::<Vec<_>>(),
-			bc.find_uncle_headers(&BlockView::new(&b4a).header_view().sha3(), 3).unwrap()
+			bc.find_uncle_headers(&BlockView::new(&b4a).header_view().hash(), 3).unwrap()
 		);
 
 		// TODO: insert block that already includes one of them as an uncle to check it's not allowed.
 	}
 
 	fn secret() -> Secret {
-		"".sha3().into()
+		keccak("").into()
 	}
 
 	#[test]
@@ -1646,8 +1646,8 @@ mod tests {
 		let b2 = fork_chain
 			.generate(&mut fork_finalizer).unwrap();
 
-		let b1a_hash = BlockView::new(&b1a).header_view().sha3();
+		let b1a_hash = BlockView::new(&b1a).header_view().hash();
-		let b2_hash = BlockView::new(&b2).header_view().sha3();
+		let b2_hash = BlockView::new(&b2).header_view().hash();
 
 		let t1_hash = t1.hash();
 
@@ -1730,9 +1730,9 @@ mod tests {
 			.with_transaction(t3.clone())
 			.generate(&mut fork_finalizer).unwrap();
 
-		let b1a_hash = BlockView::new(&b1a).header_view().sha3();
+		let b1a_hash = BlockView::new(&b1a).header_view().hash();
-		let b1b_hash = BlockView::new(&b1b).header_view().sha3();
+		let b1b_hash = BlockView::new(&b1b).header_view().hash();
-		let b2_hash = BlockView::new(&b2).header_view().sha3();
+		let b2_hash = BlockView::new(&b2).header_view().hash();
 
 		let t1_hash = t1.hash();
 		let t2_hash = t2.hash();
@@ -1790,11 +1790,11 @@ mod tests {
 		let b3b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
 		let b3a = canon_chain.generate(&mut finalizer).unwrap();
 
-		let genesis_hash = BlockView::new(&genesis).header_view().sha3();
+		let genesis_hash = BlockView::new(&genesis).header_view().hash();
-		let b1_hash= BlockView::new(&b1).header_view().sha3();
+		let b1_hash= BlockView::new(&b1).header_view().hash();
-		let b2_hash= BlockView::new(&b2).header_view().sha3();
+		let b2_hash= BlockView::new(&b2).header_view().hash();
-		let b3a_hash= BlockView::new(&b3a).header_view().sha3();
+		let b3a_hash= BlockView::new(&b3a).header_view().hash();
-		let b3b_hash= BlockView::new(&b3b).header_view().sha3();
+		let b3b_hash= BlockView::new(&b3b).header_view().hash();
 
 		// b3a is a part of canon chain, whereas b3b is part of sidechain
 		let best_block_hash = b3a_hash.clone();
@@ -1910,8 +1910,8 @@ mod tests {
 		let mut finalizer = BlockFinalizer::default();
 		let genesis = canon_chain.generate(&mut finalizer).unwrap();
 		let first = canon_chain.generate(&mut finalizer).unwrap();
-		let genesis_hash = BlockView::new(&genesis).header_view().sha3();
+		let genesis_hash = BlockView::new(&genesis).header_view().hash();
-		let first_hash = BlockView::new(&first).header_view().sha3();
+		let first_hash = BlockView::new(&first).header_view().hash();
 		let db = new_db();
 
 		{
@@ -2226,9 +2226,9 @@ mod tests {
 		let genesis = canon_chain.generate(&mut finalizer).unwrap();
 		let first = canon_chain.generate(&mut finalizer).unwrap();
 		let second = canon_chain.generate(&mut finalizer).unwrap();
-		let genesis_hash = BlockView::new(&genesis).header_view().sha3();
+		let genesis_hash = BlockView::new(&genesis).header_view().hash();
-		let first_hash = BlockView::new(&first).header_view().sha3();
+		let first_hash = BlockView::new(&first).header_view().hash();
-		let second_hash = BlockView::new(&second).header_view().sha3();
+		let second_hash = BlockView::new(&second).header_view().hash();
 
 		let db = new_db();
 		let bc = new_chain(&genesis, db.clone());
@@ -2266,7 +2266,7 @@ mod tests {
 			// create a longer fork
 			for i in 0..5 {
 				let canon_block = canon_chain.generate(&mut finalizer).unwrap();
-				let hash = BlockView::new(&canon_block).header_view().sha3();
+				let hash = BlockView::new(&canon_block).header_view().hash();
 
 				bc.insert_block(&mut batch, &canon_block, vec![]);
 				bc.insert_epoch_transition(&mut batch, i, EpochTransition {
@@ -2279,7 +2279,7 @@ mod tests {
 
 			assert_eq!(bc.best_block_number(), 5);
 
-			let hash = BlockView::new(&uncle).header_view().sha3();
+			let hash = BlockView::new(&uncle).header_view().hash();
 			bc.insert_block(&mut batch, &uncle, vec![]);
 			bc.insert_epoch_transition(&mut batch, 999, EpochTransition {
 				block_hash: hash,

ethcore/src/blockchain/generator/complete.rs

@@ -16,7 +16,6 @@
 
 use util::hash::H256;
 use util::bytes::Bytes;
-use util::sha3::Hashable;
 use views::BlockView;
 
 #[derive(Default, Clone)]
@@ -46,7 +45,7 @@ impl<'a, I> Iterator for Complete<'a, I> where I: Iterator, <I as Iterator>::Ite
 	fn next(&mut self) -> Option<Self::Item> {
 		self.iter.next().map(|item| {
 			let rlp = item.complete(self.finalizer.parent_hash.clone());
-			self.finalizer.parent_hash = BlockView::new(&rlp).header_view().sha3();
+			self.finalizer.parent_hash = BlockView::new(&rlp).header_view().hash();
 			rlp
 		})
 	}

ethcore/src/blockchain/generator/generator.rs

@@ -111,7 +111,6 @@ impl Iterator for ChainGenerator {
 
 mod tests {
 	use util::hash::{H256, H2048};
-	use util::sha3::Hashable;
 	use views::BlockView;
 	use blockchain::generator::{ChainIterator, ChainGenerator, BlockFinalizer};
 
@@ -129,7 +128,7 @@ mod tests {
 		let b1_rlp = canon_chain.generate(&mut finalizer).unwrap();
 		let b1 = BlockView::new(&b1_rlp);
 
-		assert_eq!(b1.header_view().parent_hash(), genesis.header_view().sha3());
+		assert_eq!(b1.header_view().parent_hash(), genesis.header_view().hash());
 		assert_eq!(b1.header_view().number(), 1);
 
 		let mut fork_chain = canon_chain.fork(1);
@@ -137,13 +136,13 @@ mod tests {
 		let b2_rlp_fork = fork_chain.generate(&mut finalizer.fork()).unwrap();
 		let b2_fork = BlockView::new(&b2_rlp_fork);
 
-		assert_eq!(b2_fork.header_view().parent_hash(), b1.header_view().sha3());
+		assert_eq!(b2_fork.header_view().parent_hash(), b1.header_view().hash());
 		assert_eq!(b2_fork.header_view().number(), 2);
 
 		let b2_rlp = canon_chain.generate(&mut finalizer).unwrap();
 		let b2 = BlockView::new(&b2_rlp);
 
-		assert_eq!(b2.header_view().parent_hash(), b1.header_view().sha3());
+		assert_eq!(b2.header_view().parent_hash(), b1.header_view().hash());
 		assert_eq!(b2.header_view().number(), 2);
 		assert!(b2.header_view().difficulty() > b2_fork.header_view().difficulty());
 	}
@@ -163,7 +162,7 @@ mod tests {
 		assert_eq!(block0.header_view().parent_hash(), H256::default());
 
 		assert_eq!(block1.header_view().number(), 1);
-		assert_eq!(block1.header_view().parent_hash(), block0.header_view().sha3());
+		assert_eq!(block1.header_view().parent_hash(), block0.header_view().hash());
 
 	}
 

ethcore/src/builtin.rs

@@ -23,7 +23,8 @@ use crypto::ripemd160::Ripemd160 as Ripemd160Digest;
 use crypto::digest::Digest;
 use num::{BigUint, Zero, One};
 
-use util::{U256, H256, Hashable, BytesRef};
+use hash::keccak;
+use util::{U256, H256, BytesRef};
 use ethkey::{Signature, recover as ec_recover};
 use ethjson;
 
@@ -228,7 +229,7 @@ impl Impl for EcRecover {
 		let s = Signature::from_rsv(&r, &s, bit);
 		if s.is_valid() {
 			if let Ok(p) = ec_recover(&s, &hash) {
-				let r = p.sha3();
+				let r = keccak(p);
 				output.write(0, &[0; 12]);
 				output.write(12, &r[12..r.len()]);
 			}
@@ -572,14 +573,6 @@ mod tests {
 
 	#[test]
 	fn ecrecover() {
-		/*let k = KeyPair::from_secret(b"test".sha3()).unwrap();
-		let a: Address = From::from(k.public().sha3());
-		println!("Address: {}", a);
-		let m = b"hello world".sha3();
-		println!("Message: {}", m);
-		let s = k.sign(&m).unwrap();
-		println!("Signed: {}", s);*/
-
 		let f = ethereum_builtin("ecrecover");
 
 		let i = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03").unwrap();

ethcore/src/client/client.rs

@@ -23,7 +23,8 @@ use time::precise_time_ns;
 use itertools::Itertools;
 
 // util
-use util::{Bytes, PerfTimer, Mutex, RwLock, MutexGuard, Hashable};
+use hash::keccak;
+use util::{Bytes, PerfTimer, Mutex, RwLock, MutexGuard};
 use util::{journaldb, DBValue, TrieFactory, Trie};
 use util::{U256, H256, Address, H2048};
 use util::trie::TrieSpec;
@@ -652,7 +653,7 @@ impl Client {
 			.map(Into::into)
 			.collect();
 
-		assert_eq!(header.hash(), BlockView::new(block_data).header_view().sha3());
+		assert_eq!(header.hash(), BlockView::new(block_data).header_view().hash());
 
 		//let traces = From::from(block.traces().clone().unwrap_or_else(Vec::new));
 
@@ -1503,7 +1504,7 @@ impl BlockChainClient for Client {
 		};
 
 		let (_, db) = state.drop();
-		let account_db = self.factories.accountdb.readonly(db.as_hashdb(), account.sha3());
+		let account_db = self.factories.accountdb.readonly(db.as_hashdb(), keccak(account));
 		let trie = match self.factories.trie.readonly(account_db.as_hashdb(), &root) {
 			Ok(trie) => trie,
 			_ => {
@@ -1591,7 +1592,7 @@ impl BlockChainClient for Client {
 		use verification::queue::kind::BlockLike;
 		use verification::queue::kind::blocks::Unverified;
 
-		// create unverified block here so the `sha3` calculation can be cached.
+		// create unverified block here so the `keccak` calculation can be cached.
 		let unverified = Unverified::new(bytes);
 
 		{
@@ -1792,7 +1793,7 @@ impl BlockChainClient for Client {
 				let dispatch = move |reg_addr, data| {
 					future::done(self.call_contract(BlockId::Latest, reg_addr, data))
 				};
-				r.get_address(dispatch, name.as_bytes().sha3(), "A".to_string()).wait().ok()
+				r.get_address(dispatch, keccak(name.as_bytes()), "A".to_string()).wait().ok()
 			})
 			.and_then(|a| if a.is_zero() { None } else { Some(a) })
 	}
@@ -2067,16 +2068,16 @@ mod tests {
 
 	#[test]
 	fn should_return_correct_log_index() {
+		use hash::keccak;
 		use super::transaction_receipt;
 		use ethkey::KeyPair;
 		use log_entry::{LogEntry, LocalizedLogEntry};
 		use receipt::{Receipt, LocalizedReceipt};
 		use transaction::{Transaction, LocalizedTransaction, Action};
-		use util::Hashable;
 		use tests::helpers::TestEngine;
 
 		// given
-		let key = KeyPair::from_secret_slice(&"test".sha3()).unwrap();
+		let key = KeyPair::from_secret_slice(&keccak("test")).unwrap();
 		let secret = key.secret();
 		let engine = TestEngine::new(0);
 

ethcore/src/client/test_client.rs

@@ -22,6 +22,7 @@ use std::collections::{HashMap, BTreeMap};
 use std::mem;
 use itertools::Itertools;
 use rustc_hex::FromHex;
+use hash::keccak;
 use util::*;
 use rlp::*;
 use ethkey::{Generator, Random};
@@ -241,7 +242,7 @@ impl TestBlockChainClient {
 					uncle_header.set_parent_hash(self.last_hash.read().clone());
 					uncle_header.set_number(n as BlockNumber);
 					uncles.append(&uncle_header);
-					header.set_uncles_hash(uncles.as_raw().sha3());
+					header.set_uncles_hash(keccak(uncles.as_raw()));
 					uncles
 				},
 				_ => RlpStream::new_list(0)

ethcore/src/encoded.rs

@@ -28,8 +28,9 @@ use header::{BlockNumber, Header as FullHeader};
 use transaction::UnverifiedTransaction;
 use views;
 
+use hash::keccak;
 use heapsize::HeapSizeOf;
-use util::{Address, Hashable, H256, H2048, U256};
+use util::{Address, H256, H2048, U256};
 use rlp::Rlp;
 
 /// Owning header view.
@@ -65,7 +66,7 @@ impl Header {
 // forwarders to borrowed view.
 impl Header {
 	/// Returns the header hash.
-	pub fn hash(&self) -> H256 { self.sha3() }
+	pub fn hash(&self) -> H256 { keccak(&self.0) }
 
 	/// Returns the parent hash.
 	pub fn parent_hash(&self) -> H256 { self.view().parent_hash() }
@@ -110,12 +111,6 @@ impl Header {
 	pub fn seal(&self) -> Vec<Vec<u8>> { self.view().seal() }
 }
 
-impl Hashable for Header {
-	fn sha3(&self) -> H256 {
-		self.0.sha3()
-	}
-}
-
 /// Owning block body view.
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "ipc", binary)]
@@ -219,7 +214,7 @@ impl Block {
 // forwarders to borrowed header view.
 impl Block {
 	/// Returns the header hash.
-	pub fn hash(&self) -> H256 { self.header_view().sha3() }
+	pub fn hash(&self) -> H256 { self.header_view().hash() }
 
 	/// Returns the parent hash.
 	pub fn parent_hash(&self) -> H256 { self.header_view().parent_hash() }

ethcore/src/engines/authority_round/mod.rs

@@ -830,6 +830,7 @@ impl Engine for AuthorityRound {
 mod tests {
 	use std::sync::Arc;
 	use std::sync::atomic::{AtomicUsize, Ordering as AtomicOrdering};
+	use hash::keccak;
 	use util::*;
 	use header::Header;
 	use error::{Error, BlockError};
@@ -884,8 +885,8 @@ mod tests {
 	#[test]
 	fn generates_seal_and_does_not_double_propose() {
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let addr1 = tap.insert_account("1".sha3().into(), "1").unwrap();
+		let addr1 = tap.insert_account(keccak("1").into(), "1").unwrap();
-		let addr2 = tap.insert_account("2".sha3().into(), "2").unwrap();
+		let addr2 = tap.insert_account(keccak("2").into(), "2").unwrap();
 
 		let spec = Spec::new_test_round();
 		let engine = &*spec.engine;
@@ -916,7 +917,7 @@ mod tests {
 	#[test]
 	fn proposer_switching() {
 		let tap = AccountProvider::transient_provider();
-		let addr = tap.insert_account("0".sha3().into(), "0").unwrap();
+		let addr = tap.insert_account(keccak("0").into(), "0").unwrap();
 		let mut parent_header: Header = Header::default();
 		parent_header.set_seal(vec![encode(&0usize).into_vec()]);
 		parent_header.set_gas_limit("222222".parse::<U256>().unwrap());
@@ -941,7 +942,7 @@ mod tests {
 	#[test]
 	fn rejects_future_block() {
 		let tap = AccountProvider::transient_provider();
-		let addr = tap.insert_account("0".sha3().into(), "0").unwrap();
+		let addr = tap.insert_account(keccak("0").into(), "0").unwrap();
 
 		let mut parent_header: Header = Header::default();
 		parent_header.set_seal(vec![encode(&0usize).into_vec()]);
@@ -967,7 +968,7 @@ mod tests {
 	#[test]
 	fn rejects_step_backwards() {
 		let tap = AccountProvider::transient_provider();
-		let addr = tap.insert_account("0".sha3().into(), "0").unwrap();
+		let addr = tap.insert_account(keccak("0").into(), "0").unwrap();
 
 		let mut parent_header: Header = Header::default();
 		parent_header.set_seal(vec![encode(&4usize).into_vec()]);

ethcore/src/engines/basic_authority.rs

@@ -252,6 +252,7 @@ impl Engine for BasicAuthority {
 #[cfg(test)]
 mod tests {
 	use std::sync::Arc;
+	use hash::keccak;
 	use util::*;
 	use block::*;
 	use error::{BlockError, Error};
@@ -308,7 +309,7 @@ mod tests {
 	#[test]
 	fn can_generate_seal() {
 		let tap = AccountProvider::transient_provider();
-		let addr = tap.insert_account("".sha3().into(), "").unwrap();
+		let addr = tap.insert_account(keccak("").into(), "").unwrap();
 
 		let spec = new_test_authority();
 		let engine = &*spec.engine;
@@ -326,7 +327,7 @@ mod tests {
 	#[test]
 	fn seals_internally() {
 		let tap = AccountProvider::transient_provider();
-		let authority = tap.insert_account("".sha3().into(), "").unwrap();
+		let authority = tap.insert_account(keccak("").into(), "").unwrap();
 
 		let engine = new_test_authority().engine;
 		assert!(!engine.seals_internally().unwrap());

ethcore/src/engines/tendermint/message.rs

@@ -17,6 +17,7 @@
 //! Tendermint message handling.
 
 use std::cmp;
+use hash::keccak;
 use util::*;
 use super::{Height, View, BlockHash, Step};
 use error::Error;
@@ -99,7 +100,7 @@ impl ConsensusMessage {
 	pub fn verify(&self) -> Result<Address, Error> {
 		let full_rlp = ::rlp::encode(self);
 		let block_info = Rlp::new(&full_rlp).at(1);
-		let public_key = recover(&self.signature.into(), &block_info.as_raw().sha3())?;
+		let public_key = recover(&self.signature.into(), &keccak(block_info.as_raw()))?;
 		Ok(public_to_address(&public_key))
 	}
 }
@@ -194,12 +195,13 @@ pub fn message_full_rlp(signature: &H520, vote_info: &Bytes) -> Bytes {
 }
 
 pub fn message_hash(vote_step: VoteStep, block_hash: H256) -> H256 {
-	message_info_rlp(&vote_step, Some(block_hash)).sha3()
+	keccak(message_info_rlp(&vote_step, Some(block_hash)))
 }
 
 #[cfg(test)]
 mod tests {
 	use std::sync::Arc;
+	use hash::keccak;
 	use util::*;
 	use rlp::*;
 	use account_provider::AccountProvider;
@@ -228,7 +230,7 @@ mod tests {
 				view: 123,
 				step: Step::Precommit,
 			},
-			block_hash: Some("1".sha3())
+			block_hash: Some(keccak("1")),
 		};
 		let raw_rlp = ::rlp::encode(&message).into_vec();
 		let rlp = Rlp::new(&raw_rlp);
@@ -251,12 +253,12 @@ mod tests {
 	#[test]
 	fn generate_and_verify() {
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let addr = tap.insert_account("0".sha3().into(), "0").unwrap();
+		let addr = tap.insert_account(keccak("0").into(), "0").unwrap();
 		tap.unlock_account_permanently(addr, "0".into()).unwrap();
 
 		let mi = message_info_rlp(&VoteStep::new(123, 2, Step::Precommit), Some(H256::default()));
 
-		let raw_rlp = message_full_rlp(&tap.sign(addr, None, mi.sha3()).unwrap().into(), &mi);
+		let raw_rlp = message_full_rlp(&tap.sign(addr, None, keccak(&mi)).unwrap().into(), &mi);
 
 		let rlp = UntrustedRlp::new(&raw_rlp);
 		let message: ConsensusMessage = rlp.as_val().unwrap();

ethcore/src/engines/tendermint/mod.rs

@@ -28,6 +28,7 @@ mod params;
 use std::sync::{Weak, Arc};
 use std::sync::atomic::{AtomicUsize, Ordering as AtomicOrdering};
 use std::collections::{HashSet, BTreeMap, HashMap};
+use hash::keccak;
 use std::cmp;
 use util::*;
 use client::{Client, EngineClient};
@@ -213,7 +214,7 @@ impl Tendermint {
 		let r = self.view.load(AtomicOrdering::SeqCst);
 		let s = *self.step.read();
 		let vote_info = message_info_rlp(&VoteStep::new(h, r, s), block_hash);
-		match (self.signer.read().address(), self.sign(vote_info.sha3()).map(Into::into)) {
+		match (self.signer.read().address(), self.sign(keccak(&vote_info)).map(Into::into)) {
 			(Some(validator), Ok(signature)) => {
 				let message_rlp = message_full_rlp(&signature, &vote_info);
 				let message = ConsensusMessage::new(signature, h, r, s, block_hash);
@@ -498,7 +499,7 @@ impl Engine for Tendermint {
 		let view = self.view.load(AtomicOrdering::SeqCst);
 		let bh = Some(header.bare_hash());
 		let vote_info = message_info_rlp(&VoteStep::new(height, view, Step::Propose), bh.clone());
-		if let Ok(signature) = self.sign(vote_info.sha3()).map(Into::into) {
+		if let Ok(signature) = self.sign(keccak(&vote_info)).map(Into::into) {
 			// Insert Propose vote.
 			debug!(target: "engine", "Submitting proposal {} at height {} view {}.", header.bare_hash(), height, view);
 			self.votes.vote(ConsensusMessage::new(signature, height, view, Step::Propose, bh), author);
@@ -522,7 +523,7 @@ impl Engine for Tendermint {
 		let rlp = UntrustedRlp::new(rlp);
 		let message: ConsensusMessage = rlp.as_val()?;
 		if !self.votes.is_old_or_known(&message) {
-			let sender = public_to_address(&recover(&message.signature.into(), &rlp.at(1)?.as_raw().sha3())?);
+			let sender = public_to_address(&recover(&message.signature.into(), &keccak(rlp.at(1)?.as_raw()))?);
 			if !self.is_authority(&sender) {
 				return Err(EngineError::NotAuthorized(sender).into());
 			}
@@ -798,7 +799,7 @@ mod tests {
 
 	fn vote<F>(engine: &Engine, signer: F, height: usize, view: usize, step: Step, block_hash: Option<H256>) -> Bytes where F: FnOnce(H256) -> Result<H520, ::account_provider::SignError> {
 		let mi = message_info_rlp(&VoteStep::new(height, view, step), block_hash);
-		let m = message_full_rlp(&signer(mi.sha3()).unwrap().into(), &mi);
+		let m = message_full_rlp(&signer(keccak(&mi)).unwrap().into(), &mi);
 		engine.handle_message(&m).unwrap();
 		m
 	}
@@ -806,7 +807,7 @@ mod tests {
 	fn proposal_seal(tap: &Arc<AccountProvider>, header: &Header, view: View) -> Vec<Bytes> {
 		let author = header.author();
 		let vote_info = message_info_rlp(&VoteStep::new(header.number() as Height, view, Step::Propose), Some(header.bare_hash()));
-		let signature = tap.sign(*author, None, vote_info.sha3()).unwrap();
+		let signature = tap.sign(*author, None, keccak(vote_info)).unwrap();
 		vec![
 			::rlp::encode(&view).into_vec(),
 			::rlp::encode(&H520::from(signature)).into_vec(),
@@ -815,7 +816,7 @@ mod tests {
 	}
 
 	fn insert_and_unlock(tap: &Arc<AccountProvider>, acc: &str) -> Address {
-		let addr = tap.insert_account(acc.sha3().into(), acc).unwrap();
+		let addr = tap.insert_account(keccak(acc).into(), acc).unwrap();
 		tap.unlock_account_permanently(addr, acc.into()).unwrap();
 		addr
 	}
@@ -922,7 +923,7 @@ mod tests {
 		let mut seal = proposal_seal(&tap, &header, 0);
 
 		let vote_info = message_info_rlp(&VoteStep::new(2, 0, Step::Precommit), Some(header.bare_hash()));
-		let signature1 = tap.sign(proposer, None, vote_info.sha3()).unwrap();
+		let signature1 = tap.sign(proposer, None, keccak(&vote_info)).unwrap();
 
 		seal[1] = ::rlp::NULL_RLP.to_vec();
 		seal[2] = ::rlp::encode_list(&vec![H520::from(signature1.clone())]).into_vec();
@@ -935,7 +936,7 @@ mod tests {
 		}
 
 		let voter = insert_and_unlock(&tap, "0");
-		let signature0 = tap.sign(voter, None, vote_info.sha3()).unwrap();
+		let signature0 = tap.sign(voter, None, keccak(&vote_info)).unwrap();
 
 		seal[2] = ::rlp::encode_list(&vec![H520::from(signature1.clone()), H520::from(signature0.clone())]).into_vec();
 		header.set_seal(seal.clone());
@@ -943,7 +944,7 @@ mod tests {
 		assert!(engine.verify_block_family(&header, &parent_header, None).is_ok());
 
 		let bad_voter = insert_and_unlock(&tap, "101");
-		let bad_signature = tap.sign(bad_voter, None, vote_info.sha3()).unwrap();
+		let bad_signature = tap.sign(bad_voter, None, keccak(vote_info)).unwrap();
 
 		seal[2] = ::rlp::encode_list(&vec![H520::from(signature1), H520::from(bad_signature)]).into_vec();
 		header.set_seal(seal);
@@ -1076,10 +1077,10 @@ mod tests {
 		let mut seal = proposal_seal(&tap, &header, 0);
 
 		let vote_info = message_info_rlp(&VoteStep::new(2, 0, Step::Precommit), Some(header.bare_hash()));
-		let signature1 = tap.sign(proposer, None, vote_info.sha3()).unwrap();
+		let signature1 = tap.sign(proposer, None, keccak(&vote_info)).unwrap();
 
 		let voter = insert_and_unlock(&tap, "0");
-		let signature0 = tap.sign(voter, None, vote_info.sha3()).unwrap();
+		let signature0 = tap.sign(voter, None, keccak(&vote_info)).unwrap();
 
 		seal[1] = ::rlp::NULL_RLP.to_vec();
 		seal[2] = ::rlp::encode_list(&vec![H520::from(signature1.clone())]).into_vec();
@@ -1116,7 +1117,7 @@ mod tests {
 		assert!(epoch_verifier.verify_light(&header).is_ok());
 
 		let bad_voter = insert_and_unlock(&tap, "101");
-		let bad_signature = tap.sign(bad_voter, None, vote_info.sha3()).unwrap();
+		let bad_signature = tap.sign(bad_voter, None, keccak(&vote_info)).unwrap();
 
 		seal[2] = ::rlp::encode_list(&vec![H520::from(signature1), H520::from(bad_signature)]).into_vec();
 		header.set_seal(seal);

ethcore/src/engines/validator_set/contract.rs

@@ -128,6 +128,7 @@ impl ValidatorSet for ValidatorContract {
 mod tests {
 	use std::sync::Arc;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use util::*;
 	use rlp::encode;
 	use spec::Spec;
@@ -153,7 +154,7 @@ mod tests {
 	#[test]
 	fn reports_validators() {
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let v1 = tap.insert_account("1".sha3().into(), "").unwrap();
+		let v1 = tap.insert_account(keccak("1").into(), "").unwrap();
 		let client = generate_dummy_client_with_spec_and_accounts(Spec::new_validator_contract, Some(tap.clone()));
 		client.engine().register_client(Arc::downgrade(&client));
 		let validator_contract = "0000000000000000000000000000000000000005".parse::<Address>().unwrap();

ethcore/src/engines/validator_set/multi.rs

@@ -144,6 +144,7 @@ impl ValidatorSet for Multi {
 mod tests {
 	use std::sync::Arc;
 	use std::collections::BTreeMap;
+	use hash::keccak;
 	use account_provider::AccountProvider;
 	use client::{BlockChainClient, EngineClient};
 	use engines::EpochChange;
@@ -163,9 +164,9 @@ mod tests {
 		let _ = ::env_logger::init();
 
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let s0: Secret = "0".sha3().into();
+		let s0: Secret = keccak("0").into();
 		let v0 = tap.insert_account(s0.clone(), "").unwrap();
-		let v1 = tap.insert_account("1".sha3().into(), "").unwrap();
+		let v1 = tap.insert_account(keccak("1").into(), "").unwrap();
 		let client = generate_dummy_client_with_spec_and_accounts(Spec::new_validator_multi, Some(tap));
 		client.engine().register_client(Arc::downgrade(&client));
 

ethcore/src/engines/validator_set/safe_contract.rs

@@ -19,6 +19,7 @@
 use std::sync::{Weak, Arc};
 use futures::Future;
 use native_contracts::ValidatorSet as Provider;
+use hash::keccak;
 
 use util::*;
 use util::cache::MemoryLruCache;
@@ -41,7 +42,7 @@ const MEMOIZE_CAPACITY: usize = 500;
 const EVENT_NAME: &'static [u8] = &*b"InitiateChange(bytes32,address[])";
 
 lazy_static! {
-	static ref EVENT_NAME_HASH: H256 = EVENT_NAME.sha3();
+	static ref EVENT_NAME_HASH: H256 = keccak(EVENT_NAME);
 }
 
 /// The validator contract should have the following interface:
@@ -424,6 +425,7 @@ impl ValidatorSet for ValidatorSafeContract {
 mod tests {
 	use std::sync::Arc;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use util::*;
 	use types::ids::BlockId;
 	use spec::Spec;
@@ -449,9 +451,9 @@ mod tests {
 	#[test]
 	fn knows_validators() {
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let s0: Secret = "1".sha3().into();
+		let s0: Secret = keccak("1").into();
 		let v0 = tap.insert_account(s0.clone(), "").unwrap();
-		let v1 = tap.insert_account("0".sha3().into(), "").unwrap();
+		let v1 = tap.insert_account(keccak("0").into(), "").unwrap();
 		let chain_id = Spec::new_validator_safe_contract().chain_id();
 		let client = generate_dummy_client_with_spec_and_accounts(Spec::new_validator_safe_contract, Some(tap));
 		client.engine().register_client(Arc::downgrade(&client));

ethcore/src/engines/vote_collector.rs

@@ -206,6 +206,7 @@ impl <M: Message + Default + Encodable + Debug> VoteCollector<M> {
 
 #[cfg(test)]
 mod tests {
+	use hash::keccak;
 	use util::*;
 	use rlp::*;
 	use super::*;
@@ -251,7 +252,7 @@ mod tests {
 	#[test]
 	fn seal_retrieval() {
 		let collector = VoteCollector::default();
-		let bh = Some("1".sha3());
+		let bh = Some(keccak("1"));
 		let mut signatures = Vec::new();
 		for _ in 0..5 {
 			signatures.push(H520::random());
@@ -263,9 +264,9 @@ mod tests {
 		// Good proposal
 		random_vote(&collector, signatures[0].clone(), propose_round.clone(), bh.clone());
 		// Wrong block proposal.
-		random_vote(&collector, signatures[0].clone(), propose_round.clone(), Some("0".sha3()));
+		random_vote(&collector, signatures[0].clone(), propose_round.clone(), Some(keccak("0")));
 		// Wrong block commit.
-		random_vote(&collector, signatures[3].clone(), commit_round.clone(), Some("0".sha3()));
+		random_vote(&collector, signatures[3].clone(), commit_round.clone(), Some(keccak("0")));
 		// Wrong round.
 		random_vote(&collector, signatures[0].clone(), 6, bh.clone());
 		// Wrong round.
@@ -291,22 +292,22 @@ mod tests {
 		let round1 = 1;
 		let round3 = 3;
 		// good 1
-		random_vote(&collector, H520::random(), round1, Some("0".sha3()));
+		random_vote(&collector, H520::random(), round1, Some(keccak("0")));
-		random_vote(&collector, H520::random(), 0, Some("0".sha3()));
+		random_vote(&collector, H520::random(), 0, Some(keccak("0")));
 		// good 3
-		random_vote(&collector, H520::random(), round3, Some("0".sha3()));
+		random_vote(&collector, H520::random(), round3, Some(keccak("0")));
-		random_vote(&collector, H520::random(), 2, Some("0".sha3()));
+		random_vote(&collector, H520::random(), 2, Some(keccak("0")));
 		// good prevote
-		random_vote(&collector, H520::random(), round1, Some("1".sha3()));
+		random_vote(&collector, H520::random(), round1, Some(keccak("1")));
 		// good prevote
 		let same_sig = H520::random();
-		random_vote(&collector, same_sig.clone(), round1, Some("1".sha3()));
+		random_vote(&collector, same_sig.clone(), round1, Some(keccak("1")));
-		random_vote(&collector, same_sig, round1, Some("1".sha3()));
+		random_vote(&collector, same_sig, round1, Some(keccak("1")));
 		// good precommit
-		random_vote(&collector, H520::random(), round3, Some("1".sha3()));
+		random_vote(&collector, H520::random(), round3, Some(keccak("1")));
 		// good prevote
-		random_vote(&collector, H520::random(), round1, Some("0".sha3()));
+		random_vote(&collector, H520::random(), round1, Some(keccak("0")));
-		random_vote(&collector, H520::random(), 4, Some("2".sha3()));
+		random_vote(&collector, H520::random(), 4, Some(keccak("2")));
 
 		assert_eq!(collector.count_round_votes(&round1), 4);
 		assert_eq!(collector.count_round_votes(&round3), 2);
@@ -314,7 +315,7 @@ mod tests {
 		let message = TestMessage {
 			signature: H520::default(),
 			step: round1,
-			block_hash: Some("1".sha3())
+			block_hash: Some(keccak("1"))
 		};
 		assert_eq!(collector.count_aligned_votes(&message), 2);
 	}
@@ -325,11 +326,11 @@ mod tests {
 		let vote = |round, hash| {
 			random_vote(&collector, H520::random(), round, hash);
 		};
-		vote(6, Some("0".sha3()));
+		vote(6, Some(keccak("0")));
-		vote(3, Some("0".sha3()));
+		vote(3, Some(keccak("0")));
-		vote(7, Some("0".sha3()));
+		vote(7, Some(keccak("0")));
-		vote(8, Some("1".sha3()));
+		vote(8, Some(keccak("1")));
-		vote(1, Some("1".sha3()));
+		vote(1, Some(keccak("1")));
 
 		collector.throw_out_old(&7);
 		assert_eq!(collector.len(), 2);
@@ -340,9 +341,9 @@ mod tests {
 		let collector = VoteCollector::default();
 		let round = 3;
 		// Vote is inserted fine.
-		assert!(full_vote(&collector, H520::random(), round, Some("0".sha3()), &Address::default()));
+		assert!(full_vote(&collector, H520::random(), round, Some(keccak("0")), &Address::default()));
 		// Returns the double voting address.
-		assert!(!full_vote(&collector, H520::random(), round, Some("1".sha3()), &Address::default()));
+		assert!(!full_vote(&collector, H520::random(), round, Some(keccak("1")), &Address::default()));
 		assert_eq!(collector.count_round_votes(&round), 1);
 	}
 }

ethcore/src/ethereum/ethash.rs

@@ -18,6 +18,7 @@ use std::path::Path;
 use std::cmp;
 use std::collections::{BTreeMap, HashMap};
 use std::sync::Arc;
+use hash::{KECCAK_EMPTY_LIST_RLP};
 use ethash::{quick_get_difficulty, slow_get_seedhash, EthashManager};
 use util::*;
 use block::*;
@@ -481,7 +482,7 @@ impl Ethash {
 			panic!("Can't calculate genesis block difficulty");
 		}
 
-		let parent_has_uncles = parent.uncles_hash() != &sha3::SHA3_EMPTY_LIST_RLP;
+		let parent_has_uncles = parent.uncles_hash() != &KECCAK_EMPTY_LIST_RLP;
 
 		let min_difficulty = self.ethash_params.minimum_difficulty;
 

ethcore/src/ethereum/mod.rs

@@ -119,7 +119,7 @@ mod tests {
 
 		assert_eq!(morden.state_root(), "f3f4696bbf3b3b07775128eb7a3763279a394e382130f27c21e70233e04946a9".into());
 		let genesis = morden.genesis_block();
-		assert_eq!(BlockView::new(&genesis).header_view().sha3(), "0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303".into());
+		assert_eq!(BlockView::new(&genesis).header_view().hash(), "0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303".into());
 
 		let _ = morden.engine;
 	}
@@ -130,7 +130,7 @@ mod tests {
 
 		assert_eq!(frontier.state_root(), "d7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544".into());
 		let genesis = frontier.genesis_block();
-		assert_eq!(BlockView::new(&genesis).header_view().sha3(), "d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3".into());
+		assert_eq!(BlockView::new(&genesis).header_view().hash(), "d4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3".into());
 
 		let _ = frontier.engine;
 	}

ethcore/src/executive.rs

@@ -17,6 +17,7 @@
 //! Transaction Execution environment.
 use std::cmp;
 use std::sync::Arc;
+use hash::keccak;
 use util::*;
 use state::{Backend as StateBackend, State, Substate, CleanupMode};
 use engines::Engine;
@@ -47,20 +48,20 @@ pub fn contract_address(address_scheme: CreateContractAddress, sender: &Address,
 			let mut stream = RlpStream::new_list(2);
 			stream.append(sender);
 			stream.append(nonce);
-			(From::from(stream.as_raw().sha3()), None)
+			(From::from(keccak(stream.as_raw())), None)
 		},
 		CreateContractAddress::FromCodeHash => {
-			let code_hash = code.sha3();
+			let code_hash = keccak(code);
 			let mut buffer = [0xffu8; 20 + 32];
 			&mut buffer[20..].copy_from_slice(&code_hash[..]);
-			(From::from((&buffer[..]).sha3()), Some(code_hash))
+			(From::from(keccak(&buffer[..])), Some(code_hash))
 		},
 		CreateContractAddress::FromSenderAndCodeHash => {
-			let code_hash = code.sha3();
+			let code_hash = keccak(code);
 			let mut buffer = [0u8; 20 + 32];
 			&mut buffer[..20].copy_from_slice(&sender[..]);
 			&mut buffer[20..].copy_from_slice(&code_hash[..]);
-			(From::from((&buffer[..]).sha3()), Some(code_hash))
+			(From::from(keccak(&buffer[..])), Some(code_hash))
 		},
 	}
 }
@@ -1307,8 +1308,8 @@ mod tests {
 		}
 	}
 
-	evm_test!{test_sha3: test_sha3_jit, test_sha3_int}
+	evm_test!{test_keccak: test_keccak_jit, test_keccak_int}
-	fn test_sha3(factory: Factory) {
+	fn test_keccak(factory: Factory) {
 		let code = "6064640fffffffff20600055".from_hex().unwrap();
 
 		let sender = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();

ethcore/src/header.rs

@@ -18,6 +18,7 @@
 
 use std::cmp;
 use std::cell::RefCell;
+use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP, keccak};
 use heapsize::HeapSizeOf;
 use util::*;
 use basic_types::{LogBloom, ZERO_LOGBLOOM};
@@ -101,12 +102,12 @@ impl Default for Header {
 			number: 0,
 			author: Address::default(),
 
-			transactions_root: SHA3_NULL_RLP,
+			transactions_root: KECCAK_NULL_RLP,
-			uncles_hash: SHA3_EMPTY_LIST_RLP,
+			uncles_hash: KECCAK_EMPTY_LIST_RLP,
 			extra_data: vec![],
 
-			state_root: SHA3_NULL_RLP,
+			state_root: KECCAK_NULL_RLP,
-			receipts_root: SHA3_NULL_RLP,
+			receipts_root: KECCAK_NULL_RLP,
 			log_bloom: ZERO_LOGBLOOM.clone(),
 			gas_used: U256::default(),
 			gas_limit: U256::default(),
@@ -195,13 +196,13 @@ impl Header {
 	/// Set the seal field of the header.
 	pub fn set_seal(&mut self, a: Vec<Bytes>) { self.seal = a; self.note_dirty(); }
 
-	/// Get the hash of this header (sha3 of the RLP).
+	/// Get the hash of this header (keccak of the RLP).
 	pub fn hash(&self) -> H256 {
  		let mut hash = self.hash.borrow_mut();
  		match &mut *hash {
  			&mut Some(ref h) => h.clone(),
  			hash @ &mut None => {
-				let h = self.rlp_sha3(Seal::With);
+				let h = self.rlp_keccak(Seal::With);
  				*hash = Some(h.clone());
  				h
  			}
@@ -214,7 +215,7 @@ impl Header {
 		match &mut *hash {
 			&mut Some(ref h) => h.clone(),
 			hash @ &mut None => {
-				let h = self.rlp_sha3(Seal::Without);
+				let h = self.rlp_keccak(Seal::Without);
 				*hash = Some(h.clone());
 				h
 			}
@@ -258,8 +259,8 @@ impl Header {
 		s.out()
 	}
 
-	/// Get the SHA3 (Keccak) of this header, optionally `with_seal`.
+	/// Get the KECCAK (Keccak) of this header, optionally `with_seal`.
-	pub fn rlp_sha3(&self, with_seal: Seal) -> H256 { self.rlp(with_seal).sha3() }
+	pub fn rlp_keccak(&self, with_seal: Seal) -> H256 { keccak(self.rlp(with_seal)) }
 }
 
 impl Decodable for Header {
@@ -279,7 +280,7 @@ impl Decodable for Header {
 			timestamp: cmp::min(r.val_at::<U256>(11)?, u64::max_value().into()).as_u64(),
 			extra_data: r.val_at(12)?,
 			seal: vec![],
-			hash: RefCell::new(Some(r.as_raw().sha3())),
+			hash: RefCell::new(Some(keccak(r.as_raw()))),
 			bare_hash: RefCell::new(None),
 		};
 

ethcore/src/lib.rs

@@ -101,6 +101,7 @@ extern crate num;
 extern crate price_info;
 extern crate rand;
 extern crate rlp;
+extern crate hash;
 extern crate heapsize;
 
 #[macro_use]

ethcore/src/migrations/state/v7.rs

@@ -23,14 +23,14 @@ use util::Bytes;
 use util::{Address, H256};
 use util::kvdb::Database;
 use util::migration::{Batch, Config, Error, Migration, SimpleMigration, Progress};
-use util::sha3::Hashable;
+use hash::keccak;
 use std::sync::Arc;
 
 use rlp::{decode, Rlp, RlpStream};
 
 // attempt to migrate a key, value pair. None if migration not possible.
 fn attempt_migrate(mut key_h: H256, val: &[u8]) -> Option<H256> {
-	let val_hash = val.sha3();
+	let val_hash = keccak(val);
 
 	if key_h != val_hash {
 		// this is a key which has been xor'd with an address.
@@ -43,7 +43,7 @@ fn attempt_migrate(mut key_h: H256, val: &[u8]) -> Option<H256> {
 			return None;
 		}
 
-		let address_hash = Address::from(address).sha3();
+		let address_hash = keccak(Address::from(address));
 
 		// create the xor'd key in place.
 		key_h.copy_from_slice(&*val_hash);

ethcore/src/miner/banning_queue.rs

@@ -24,7 +24,8 @@ use transient_hashmap::TransientHashMap;
 use miner::{TransactionQueue, TransactionQueueDetailsProvider, TransactionImportResult, TransactionOrigin};
 use miner::transaction_queue::QueuingInstant;
 use error::{Error, TransactionError};
-use util::{U256, H256, Address, Hashable};
+use util::{U256, H256, Address};
+use hash::keccak;
 
 type Count = u16;
 
@@ -103,7 +104,7 @@ impl BanningTransactionQueue {
 
 			// Check code
 			if let Action::Create = transaction.action {
-				let code_hash = transaction.data.sha3();
+				let code_hash = keccak(&transaction.data);
 				let count = self.codes_bans.direct().get(&code_hash).cloned().unwrap_or(0);
 				if count > threshold {
 					debug!(target: "txqueue", "Ignoring transaction {:?} because code is banned.", transaction.hash());
@@ -131,7 +132,7 @@ impl BanningTransactionQueue {
 						self.ban_recipient(recipient)
 					},
 					Action::Create => {
-						self.ban_codehash(transaction.data.sha3())
+						self.ban_codehash(keccak(&transaction.data))
 					},
 				};
 				sender_banned || recipient_or_code_banned
@@ -210,13 +211,14 @@ impl DerefMut for BanningTransactionQueue {
 mod tests {
 	use std::time::Duration;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use super::{BanningTransactionQueue, Threshold};
 	use ethkey::{Random, Generator};
 	use transaction::{Transaction, SignedTransaction, Action};
 	use error::{Error, TransactionError};
 	use client::TransactionImportResult;
 	use miner::{TransactionQueue, TransactionOrigin};
-	use util::{U256, Address, Hashable};
+	use util::{U256, Address};
 	use miner::transaction_queue::test::DummyTransactionDetailsProvider;
 
 	fn queue() -> BanningTransactionQueue {
@@ -310,7 +312,7 @@ mod tests {
 	fn should_not_accept_transactions_with_banned_code() {
 		// given
 		let tx = transaction(Action::Create);
-		let codehash = tx.data.sha3();
+		let codehash = keccak(&tx.data);
 		let mut txq = queue();
 		// Banlist once (threshold not reached)
 		let banlist1 = txq.ban_codehash(codehash);

ethcore/src/miner/miner.rs

@@ -1235,6 +1235,7 @@ mod tests {
 	use std::sync::Arc;
 	use std::time::Duration;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use super::super::{MinerService, PrioritizationStrategy};
 	use super::*;
 	use block::IsBlock;
@@ -1418,7 +1419,7 @@ mod tests {
 	fn should_fail_setting_engine_signer_on_pow() {
 		let spec = Spec::new_pow_test_spec;
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let addr = tap.insert_account("1".sha3().into(), "").unwrap();
+		let addr = tap.insert_account(keccak("1").into(), "").unwrap();
 		let client = generate_dummy_client_with_spec_and_accounts(spec, Some(tap.clone()));
 		assert!(match client.miner().set_engine_signer(addr, "".into()) { Err(AccountError::InappropriateChain) => true, _ => false })
 	}
@@ -1427,7 +1428,7 @@ mod tests {
 	fn should_fail_setting_engine_signer_without_account_provider() {
 		let spec = Spec::new_instant;
 		let tap = Arc::new(AccountProvider::transient_provider());
-		let addr = tap.insert_account("1".sha3().into(), "").unwrap();
+		let addr = tap.insert_account(keccak("1").into(), "").unwrap();
 		let client = generate_dummy_client_with_spec_and_accounts(spec, None);
 		assert!(match client.miner().set_engine_signer(addr, "".into()) { Err(AccountError::NotFound) => true, _ => false });
 	}

ethcore/src/pod_account.rs

@@ -17,6 +17,7 @@
 use std::fmt;
 use std::collections::BTreeMap;
 use itertools::Itertools;
+use hash::{keccak};
 use util::*;
 use state::Account;
 use ethjson;
@@ -61,7 +62,7 @@ impl PodAccount {
 		stream.append(&self.nonce);
 		stream.append(&self.balance);
 		stream.append(&sec_trie_root(self.storage.iter().map(|(k, v)| (k.to_vec(), rlp::encode(&U256::from(&**v)).to_vec())).collect()));
-		stream.append(&self.code.as_ref().unwrap_or(&vec![]).sha3());
+		stream.append(&keccak(&self.code.as_ref().unwrap_or(&vec![])));
 		stream.out()
 	}
 
@@ -117,7 +118,7 @@ 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| c.sha3()),
+			self.code.as_ref().map_or_else(H256::new, |c| keccak(c)),
 			self.storage.len(),
 		)
 	}

ethcore/src/snapshot/account.rs

@@ -19,8 +19,9 @@
 use account_db::{AccountDB, AccountDBMut};
 use basic_account::BasicAccount;
 use snapshot::Error;
+use hash::{KECCAK_EMPTY, KECCAK_NULL_RLP};
 
-use util::{U256, H256, Bytes, HashDB, SHA3_EMPTY, SHA3_NULL_RLP};
+use util::{U256, H256, Bytes, HashDB};
 use util::trie::{TrieDB, Trie};
 use rlp::{RlpStream, UntrustedRlp};
 
@@ -30,8 +31,8 @@ use std::collections::HashSet;
 const ACC_EMPTY: BasicAccount = BasicAccount {
 	nonce: U256([0, 0, 0, 0]),
 	balance: U256([0, 0, 0, 0]),
-	storage_root: SHA3_NULL_RLP,
+	storage_root: KECCAK_NULL_RLP,
-	code_hash: SHA3_EMPTY,
+	code_hash: KECCAK_EMPTY,
 };
 
 // whether an encoded account has code and how it is referred to.
@@ -78,7 +79,7 @@ pub fn to_fat_rlps(account_hash: &H256, acc: &BasicAccount, acct_db: &AccountDB,
 					  .append(&acc.balance);
 
 		// [has_code, code_hash].
-		if acc.code_hash == SHA3_EMPTY {
+		if acc.code_hash == KECCAK_EMPTY {
 			account_stream.append(&CodeState::Empty.raw()).append_empty_data();
 		} else if used_code.contains(&acc.code_hash) {
 			account_stream.append(&CodeState::Hash.raw()).append(&acc.code_hash);
@@ -164,7 +165,7 @@ pub fn from_fat_rlp(
 
 	// load the code if it exists.
 	let (code_hash, new_code) = match code_state {
-		CodeState::Empty => (SHA3_EMPTY, None),
+		CodeState::Empty => (KECCAK_EMPTY, None),
 		CodeState::Inline => {
 			let code: Bytes = rlp.val_at(3)?;
 			let code_hash = acct_db.insert(&code);
@@ -210,8 +211,8 @@ mod tests {
 	use tests::helpers::get_temp_state_db;
 	use snapshot::tests::helpers::fill_storage;
 
-	use util::sha3::{SHA3_EMPTY, SHA3_NULL_RLP};
+	use hash::{KECCAK_EMPTY, KECCAK_NULL_RLP, keccak};
-	use util::{Address, H256, HashDB, DBValue, Hashable};
+	use util::{Address, H256, HashDB, DBValue};
 	use rlp::UntrustedRlp;
 
 	use std::collections::HashSet;
@@ -226,14 +227,14 @@ mod tests {
 		let account = BasicAccount {
 			nonce: 50.into(),
 			balance: 123456789.into(),
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
-			code_hash: SHA3_EMPTY,
+			code_hash: KECCAK_EMPTY,
 		};
 
 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp), account);
 
-		let fat_rlps = to_fat_rlps(&addr.sha3(), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
+		let fat_rlps = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
 		let fat_rlp = UntrustedRlp::new(&fat_rlps[0]).at(1).unwrap();
 		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hashdb_mut(), &addr), fat_rlp, H256::zero()).unwrap().0, account);
 	}
@@ -245,20 +246,20 @@ mod tests {
 
 		let account = {
 			let acct_db = AccountDBMut::new(db.as_hashdb_mut(), &addr);
-			let mut root = SHA3_NULL_RLP;
+			let mut root = KECCAK_NULL_RLP;
 			fill_storage(acct_db, &mut root, &mut H256::zero());
 			BasicAccount {
 				nonce: 25.into(),
 				balance: 987654321.into(),
 				storage_root: root,
-				code_hash: SHA3_EMPTY,
+				code_hash: KECCAK_EMPTY,
 			}
 		};
 
 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp), account);
 
-		let fat_rlp = to_fat_rlps(&addr.sha3(), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
+		let fat_rlp = to_fat_rlps(&keccak(&addr), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), usize::max_value(), usize::max_value()).unwrap();
 		let fat_rlp = UntrustedRlp::new(&fat_rlp[0]).at(1).unwrap();
 		assert_eq!(from_fat_rlp(&mut AccountDBMut::new(db.as_hashdb_mut(), &addr), fat_rlp, H256::zero()).unwrap().0, account);
 	}
@@ -270,21 +271,21 @@ mod tests {
 
 		let account = {
 			let acct_db = AccountDBMut::new(db.as_hashdb_mut(), &addr);
-			let mut root = SHA3_NULL_RLP;
+			let mut root = KECCAK_NULL_RLP;
 			fill_storage(acct_db, &mut root, &mut H256::zero());
 			BasicAccount {
 				nonce: 25.into(),
 				balance: 987654321.into(),
 				storage_root: root,
-				code_hash: SHA3_EMPTY,
+				code_hash: KECCAK_EMPTY,
 			}
 		};
 
 		let thin_rlp = ::rlp::encode(&account);
 		assert_eq!(::rlp::decode::<BasicAccount>(&thin_rlp), account);
 
-		let fat_rlps = to_fat_rlps(&addr.sha3(), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), 500, 1000).unwrap();
+		let fat_rlps = to_fat_rlps(&keccak(addr), &account, &AccountDB::new(db.as_hashdb(), &addr), &mut Default::default(), 500, 1000).unwrap();
-		let mut root = SHA3_NULL_RLP;
+		let mut root = KECCAK_NULL_RLP;
 		let mut restored_account = None;
 		for rlp in fat_rlps {
 			let fat_rlp = UntrustedRlp::new(&rlp).at(1).unwrap();
@@ -314,21 +315,21 @@ mod tests {
 		let account1 = BasicAccount {
 			nonce: 50.into(),
 			balance: 123456789.into(),
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			code_hash: code_hash,
 		};
 
 		let account2 = BasicAccount {
 			nonce: 400.into(),
 			balance: 98765432123456789usize.into(),
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			code_hash: code_hash,
 		};
 
 		let mut used_code = HashSet::new();
 
-		let fat_rlp1 = to_fat_rlps(&addr1.sha3(), &account1, &AccountDB::new(db.as_hashdb(), &addr1), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
+		let fat_rlp1 = to_fat_rlps(&keccak(&addr1), &account1, &AccountDB::new(db.as_hashdb(), &addr1), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
-		let fat_rlp2 = to_fat_rlps(&addr2.sha3(), &account2, &AccountDB::new(db.as_hashdb(), &addr2), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
+		let fat_rlp2 = to_fat_rlps(&keccak(&addr2), &account2, &AccountDB::new(db.as_hashdb(), &addr2), &mut used_code, usize::max_value(), usize::max_value()).unwrap();
 		assert_eq!(used_code.len(), 1);
 
 		let fat_rlp1 = UntrustedRlp::new(&fat_rlp1[0]).at(1).unwrap();

ethcore/src/snapshot/block.rs

@@ -18,10 +18,11 @@
 
 use block::Block;
 use header::Header;
+use hash::keccak;
 
 use views::BlockView;
 use rlp::{DecoderError, RlpStream, UntrustedRlp};
-use util::{Bytes, Hashable, H256};
+use util::{Bytes, H256};
 use util::triehash::ordered_trie_root;
 
 const HEADER_FIELDS: usize = 8;
@@ -111,7 +112,7 @@ impl AbridgedBlock {
 
 		let mut uncles_rlp = RlpStream::new();
 		uncles_rlp.append_list(&uncles);
-		header.set_uncles_hash(uncles_rlp.as_raw().sha3());
+		header.set_uncles_hash(keccak(uncles_rlp.as_raw()));
 
 		let mut seal_fields = Vec::new();
 		for i in (HEADER_FIELDS + BLOCK_FIELDS)..rlp.item_count()? {

ethcore/src/snapshot/io.rs

@@ -342,7 +342,7 @@ impl SnapshotReader for LooseReader {
 #[cfg(test)]
 mod tests {
 	use devtools::RandomTempPath;
-	use util::sha3::Hashable;
+	use hash::keccak;
 
 	use snapshot::ManifestData;
 	use super::{SnapshotWriter, SnapshotReader, PackedWriter, PackedReader, LooseWriter, LooseReader, SNAPSHOT_VERSION};
@@ -359,24 +359,24 @@ mod tests {
 		let mut block_hashes = Vec::new();
 
 		for chunk in STATE_CHUNKS {
-			let hash = chunk.sha3();
+			let hash = keccak(&chunk);
 			state_hashes.push(hash.clone());
 			writer.write_state_chunk(hash, chunk).unwrap();
 		}
 
 		for chunk in BLOCK_CHUNKS {
-			let hash = chunk.sha3();
+			let hash = keccak(&chunk);
 			block_hashes.push(hash.clone());
-			writer.write_block_chunk(chunk.sha3(), chunk).unwrap();
+			writer.write_block_chunk(keccak(&chunk), chunk).unwrap();
 		}
 
 		let manifest = ManifestData {
 			version: SNAPSHOT_VERSION,
 			state_hashes: state_hashes,
 			block_hashes: block_hashes,
-			state_root: b"notarealroot".sha3(),
+			state_root: keccak(b"notarealroot"),
 			block_number: 12345678987654321,
-			block_hash: b"notarealblock".sha3(),
+			block_hash: keccak(b"notarealblock"),
 		};
 
 		writer.finish(manifest.clone()).unwrap();
@@ -398,24 +398,24 @@ mod tests {
 		let mut block_hashes = Vec::new();
 
 		for chunk in STATE_CHUNKS {
-			let hash = chunk.sha3();
+			let hash = keccak(&chunk);
 			state_hashes.push(hash.clone());
 			writer.write_state_chunk(hash, chunk).unwrap();
 		}
 
 		for chunk in BLOCK_CHUNKS {
-			let hash = chunk.sha3();
+			let hash = keccak(&chunk);
 			block_hashes.push(hash.clone());
-			writer.write_block_chunk(chunk.sha3(), chunk).unwrap();
+			writer.write_block_chunk(keccak(&chunk), chunk).unwrap();
 		}
 
 		let manifest = ManifestData {
 			version: SNAPSHOT_VERSION,
 			state_hashes: state_hashes,
 			block_hashes: block_hashes,
-			state_root: b"notarealroot".sha3(),
+			state_root: keccak(b"notarealroot"),
 			block_number: 12345678987654321,
-			block_hash: b"notarealblock".sha3(),
+			block_hash: keccak(b"notarealblock)"),
 		};
 
 		writer.finish(manifest.clone()).unwrap();

ethcore/src/snapshot/mod.rs

@@ -22,6 +22,7 @@
 use std::collections::{HashMap, HashSet};
 use std::sync::Arc;
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use hash::{keccak, KECCAK_NULL_RLP, KECCAK_EMPTY};
 
 use account_db::{AccountDB, AccountDBMut};
 use blockchain::{BlockChain, BlockProvider};
@@ -29,13 +30,12 @@ use engines::Engine;
 use header::Header;
 use ids::BlockId;
 
-use util::{Bytes, Hashable, HashDB, DBValue, snappy, U256};
+use util::{Bytes, HashDB, DBValue, snappy, U256};
 use util::Mutex;
 use util::hash::{H256};
 use util::journaldb::{self, Algorithm, JournalDB};
 use util::kvdb::KeyValueDB;
 use util::trie::{TrieDB, TrieDBMut, Trie, TrieMut};
-use util::sha3::SHA3_NULL_RLP;
 use rlp::{RlpStream, UntrustedRlp};
 use bloom_journal::Bloom;
 
@@ -183,7 +183,7 @@ pub fn chunk_secondary<'a>(mut chunker: Box<SnapshotComponents>, chain: &'a Bloc
 		let mut chunk_sink = |raw_data: &[u8]| {
 			let compressed_size = snappy::compress_into(raw_data, &mut snappy_buffer);
 			let compressed = &snappy_buffer[..compressed_size];
-			let hash = compressed.sha3();
+			let hash = keccak(&compressed);
 			let size = compressed.len();
 
 			writer.lock().write_block_chunk(hash, compressed)?;
@@ -240,7 +240,7 @@ impl<'a> StateChunker<'a> {
 
 		let compressed_size = snappy::compress_into(&raw_data, &mut self.snappy_buffer);
 		let compressed = &self.snappy_buffer[..compressed_size];
-		let hash = compressed.sha3();
+		let hash = keccak(&compressed);
 
 		self.writer.lock().write_state_chunk(hash, compressed)?;
 		trace!(target: "snapshot", "wrote state chunk. size: {}, uncompressed size: {}", compressed_size, raw_data.len());
@@ -318,7 +318,7 @@ impl StateRebuilder {
 	pub fn new(db: Arc<KeyValueDB>, pruning: Algorithm) -> Self {
 		StateRebuilder {
 			db: journaldb::new(db.clone(), pruning, ::db::COL_STATE),
-			state_root: SHA3_NULL_RLP,
+			state_root: KECCAK_NULL_RLP,
 			known_code: HashMap::new(),
 			missing_code: HashMap::new(),
 			bloom: StateDB::load_bloom(&*db),
@@ -362,7 +362,7 @@ impl StateRebuilder {
 
 		// batch trie writes
 		{
-			let mut account_trie = if self.state_root != SHA3_NULL_RLP {
+			let mut account_trie = if self.state_root != KECCAK_NULL_RLP {
 				TrieDBMut::from_existing(self.db.as_hashdb_mut(), &mut self.state_root)?
 			} else {
 				TrieDBMut::new(self.db.as_hashdb_mut(), &mut self.state_root)
@@ -443,7 +443,7 @@ fn rebuild_accounts(
 				// new inline code
 				Some(code) => status.new_code.push((code_hash, code, hash)),
 				None => {
-					if code_hash != ::util::SHA3_EMPTY {
+					if code_hash != KECCAK_EMPTY {
 						// see if this code has already been included inline
 						match known_code.get(&code_hash) {
 							Some(&first_with) => {

ethcore/src/snapshot/tests/helpers.rs

@@ -18,6 +18,7 @@
 //! which can be queried before and after a full snapshot/restore cycle.
 
 use std::sync::Arc;
+use hash::{KECCAK_NULL_RLP};
 
 use account_db::AccountDBMut;
 use basic_account::BasicAccount;
@@ -36,7 +37,6 @@ use util::hashdb::HashDB;
 use util::journaldb;
 use util::trie::{Alphabet, StandardMap, SecTrieDBMut, TrieMut, ValueMode};
 use util::trie::{TrieDB, TrieDBMut, Trie};
-use util::sha3::SHA3_NULL_RLP;
 
 // the proportion of accounts we will alter each tick.
 const ACCOUNT_CHURN: f32 = 0.01;
@@ -51,7 +51,7 @@ impl StateProducer {
 	/// Create a new `StateProducer`.
 	pub fn new() -> Self {
 		StateProducer {
-			state_root: SHA3_NULL_RLP,
+			state_root: KECCAK_NULL_RLP,
 			storage_seed: H256::zero(),
 		}
 	}
@@ -115,7 +115,7 @@ pub fn fill_storage(mut db: AccountDBMut, root: &mut H256, seed: &mut H256) {
 		count: 100,
 	};
 	{
-		let mut trie = if *root == SHA3_NULL_RLP {
+		let mut trie = if *root == KECCAK_NULL_RLP {
 			SecTrieDBMut::new(&mut db, root)
 		} else {
 			SecTrieDBMut::from_existing(&mut db, root).unwrap()

ethcore/src/snapshot/tests/proof_of_authority.rs

@@ -30,7 +30,7 @@ use spec::Spec;
 use tests::helpers;
 use transaction::{Transaction, Action, SignedTransaction};
 
-use util::{Address, Hashable};
+use util::Address;
 use util::kvdb;
 
 const PASS: &'static str = "";
@@ -38,14 +38,14 @@ const TRANSITION_BLOCK_1: usize = 2; // block at which the contract becomes acti
 const TRANSITION_BLOCK_2: usize = 10; // block at which the second contract activates.
 
 macro_rules! secret {
-	($e: expr) => { Secret::from_slice(&$e.sha3()) }
+	($e: expr) => { Secret::from_slice(&$crate::hash::keccak($e)) }
 }
 
 lazy_static! {
 	// contract addresses.
 	static ref CONTRACT_ADDR_1: Address = Address::from_str("0000000000000000000000000000000000000005").unwrap();
 	static ref CONTRACT_ADDR_2: Address = Address::from_str("0000000000000000000000000000000000000006").unwrap();
-	// secret: `sha3(1)`, and initial validator.
+	// secret: `keccak(1)`, and initial validator.
 	static ref RICH_ADDR: Address = Address::from_str("7d577a597b2742b498cb5cf0c26cdcd726d39e6e").unwrap();
 	// rich address' secret.
 	static ref RICH_SECRET: Secret = secret!("1");
@@ -53,7 +53,7 @@ lazy_static! {
 
 
 /// Contract code used here: https://gist.github.com/anonymous/2a43783647e0f0dfcc359bd6fd81d6d9
-/// Account with secrets "1".sha3() is initially the validator.
+/// Account with secrets keccak("1") is initially the validator.
 /// Transitions to the contract at block 2, initially same validator set.
 /// Create a new Spec with AuthorityRound which uses a contract at address 5 to determine the current validators using `getValidators`.
 /// `native_contracts::test_contracts::ValidatorSet` provides a native wrapper for the ABi.

ethcore/src/snapshot/tests/proof_of_work.rs

@@ -71,7 +71,7 @@ fn chunk_and_restore(amount: u64) {
 		version: 2,
 		state_hashes: Vec::new(),
 		block_hashes: block_hashes,
-		state_root: ::util::sha3::SHA3_NULL_RLP,
+		state_root: ::hash::KECCAK_NULL_RLP,
 		block_number: amount,
 		block_hash: best_hash,
 	};
@@ -134,7 +134,7 @@ fn checks_flag() {
 		version: 2,
 		state_hashes: Vec::new(),
 		block_hashes: Vec::new(),
-		state_root: ::util::sha3::SHA3_NULL_RLP,
+		state_root: ::hash::KECCAK_NULL_RLP,
 		block_number: 102,
 		block_hash: H256::default(),
 	};

ethcore/src/snapshot/tests/state.rs

@@ -32,10 +32,9 @@ use util::memorydb::MemoryDB;
 use util::Mutex;
 use devtools::RandomTempPath;
 
-use util::sha3::SHA3_NULL_RLP;
-
 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;
+use hash::{KECCAK_NULL_RLP, keccak};
 
 #[test]
 fn snap_and_restore() {
@@ -98,7 +97,7 @@ fn snap_and_restore() {
 fn get_code_from_prev_chunk() {
 	use std::collections::HashSet;
 	use rlp::RlpStream;
-	use util::{HashDB, H256, U256, Hashable};
+	use util::{HashDB, H256, U256};
 
 	use account_db::{AccountDBMut, AccountDB};
 
@@ -107,8 +106,8 @@ fn get_code_from_prev_chunk() {
 	let mut acc_stream = RlpStream::new_list(4);
 	acc_stream.append(&U256::default())
 		.append(&U256::default())
-		.append(&SHA3_NULL_RLP)
+		.append(&KECCAK_NULL_RLP)
-		.append(&code.sha3());
+		.append(&keccak(code));
 
 	let (h1, h2) = (H256::random(), H256::random());
 

ethcore/src/spec/genesis.rs

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use util::{Address, H256, U256};
-use util::sha3::SHA3_NULL_RLP;
+use hash::KECCAK_NULL_RLP;
 use ethjson;
 use super::seal::Seal;
 
@@ -54,8 +54,8 @@ impl From<ethjson::spec::Genesis> for Genesis {
 			timestamp: g.timestamp.map_or(0, Into::into),
 			parent_hash: g.parent_hash.map_or_else(H256::zero, Into::into),
 			gas_limit: g.gas_limit.into(),
-			transactions_root: g.transactions_root.map_or_else(|| SHA3_NULL_RLP.clone(), Into::into),
+			transactions_root: g.transactions_root.map_or_else(|| KECCAK_NULL_RLP.clone(), Into::into),
-			receipts_root: g.receipts_root.map_or_else(|| SHA3_NULL_RLP.clone(), Into::into),
+			receipts_root: g.receipts_root.map_or_else(|| KECCAK_NULL_RLP.clone(), Into::into),
 			state_root: g.state_root.map(Into::into),
 			gas_used: g.gas_used.map_or_else(U256::zero, Into::into),
 			extra_data: g.extra_data.map_or_else(Vec::new, Into::into),

ethcore/src/spec/spec.rs

@@ -21,6 +21,7 @@ use std::collections::BTreeMap;
 use std::path::Path;
 use std::sync::Arc;
 use rustc_hex::FromHex;
+use hash::{KECCAK_NULL_RLP, keccak};
 use super::genesis::Genesis;
 use super::seal::Generic as GenericSeal;
 
@@ -203,9 +204,9 @@ pub struct Spec {
 	pub gas_used: U256,
 	/// The genesis block's timestamp field.
 	pub timestamp: u64,
-	/// Transactions root of the genesis block. Should be SHA3_NULL_RLP.
+	/// Transactions root of the genesis block. Should be KECCAK_NULL_RLP.
 	pub transactions_root: H256,
-	/// Receipts root of the genesis block. Should be SHA3_NULL_RLP.
+	/// Receipts root of the genesis block. Should be KECCAK_NULL_RLP.
 	pub receipts_root: H256,
 	/// The genesis block's extra data field.
 	pub extra_data: Bytes,
@@ -287,7 +288,7 @@ impl Spec {
 
 	// given a pre-constructor state, run all the given constructors and produce a new state and state root.
 	fn run_constructors<T: Backend>(&self, factories: &Factories, mut db: T) -> Result<T, Error> {
-		let mut root = SHA3_NULL_RLP;
+		let mut root = KECCAK_NULL_RLP;
 
 		// basic accounts in spec.
 		{
@@ -301,7 +302,7 @@ impl Spec {
 		for (address, account) in self.genesis_state.get().iter() {
 			db.note_non_null_account(address);
 			account.insert_additional(
-				&mut *factories.accountdb.create(db.as_hashdb_mut(), address.sha3()),
+				&mut *factories.accountdb.create(db.as_hashdb_mut(), keccak(address)),
 				&factories.trie
 			);
 		}
@@ -333,7 +334,7 @@ impl Spec {
 				trace!(target: "spec", "  .. root before = {}", state.root());
 				let params = ActionParams {
 					code_address: address.clone(),
-					code_hash: Some(constructor.sha3()),
+					code_hash: Some(keccak(constructor)),
 					address: address.clone(),
 					sender: from.clone(),
 					origin: from.clone(),
@@ -399,7 +400,7 @@ impl Spec {
 		header.set_number(0);
 		header.set_author(self.author.clone());
 		header.set_transactions_root(self.transactions_root.clone());
-		header.set_uncles_hash(RlpStream::new_list(0).out().sha3());
+		header.set_uncles_hash(keccak(RlpStream::new_list(0).out()));
 		header.set_extra_data(self.extra_data.clone());
 		header.set_state_root(self.state_root());
 		header.set_receipts_root(self.receipts_root.clone());
@@ -486,7 +487,7 @@ impl Spec {
 	/// Create a new Spec which conforms to the Frontier-era Morden chain except that it's a NullEngine consensus with applying reward on block close.
 	pub fn new_test_with_reward() -> Spec { load_bundled!("null_morden_with_reward") }
 
-	/// Create a new Spec which is a NullEngine consensus with a premine of address whose secret is sha3('').
+	/// Create a new Spec which is a NullEngine consensus with a premine of address whose secret is keccak('').
 	pub fn new_null() -> Spec { load_bundled!("null") }
 
 	/// Create a new Spec which constructs a contract at address 5 with storage at 0 equal to 1.
@@ -496,15 +497,15 @@ impl Spec {
 	pub fn new_instant() -> Spec { load_bundled!("instant_seal") }
 
 	/// Create a new Spec with AuthorityRound consensus which does internal sealing (not requiring work).
-	/// Accounts with secrets "0".sha3() and "1".sha3() are the validators.
+	/// Accounts with secrets keccak("0") and keccak("1") are the validators.
 	pub fn new_test_round() -> Self { load_bundled!("authority_round") }
 
 	/// Create a new Spec with Tendermint consensus which does internal sealing (not requiring work).
-	/// Account "0".sha3() and "1".sha3() are a authorities.
+	/// Account keccak("0") and keccak("1") are a authorities.
 	pub fn new_test_tendermint() -> Self { load_bundled!("tendermint") }
 
 	/// TestList.sol used in both specs: https://github.com/paritytech/contracts/pull/30/files
-	/// Accounts with secrets "0".sha3() and "1".sha3() are initially the validators.
+	/// Accounts with secrets keccak("0") and keccak("1") are initially the validators.
 	/// Create a new Spec with BasicAuthority which uses a contract at address 5 to determine the current validators using `getValidators`.
 	/// Second validator can be removed with "0xbfc708a000000000000000000000000082a978b3f5962a5b0957d9ee9eef472ee55b42f1" and added back in using "0x4d238c8e00000000000000000000000082a978b3f5962a5b0957d9ee9eef472ee55b42f1".
 	pub fn new_validator_safe_contract() -> Self { load_bundled!("validator_safe_contract") }
@@ -515,7 +516,7 @@ impl Spec {
 	pub fn new_validator_contract() -> Self { load_bundled!("validator_contract") }
 
 	/// Create a new Spec with BasicAuthority which uses multiple validator sets changing with height.
-	/// Account with secrets "0".sha3() is the validator for block 1 and with "1".sha3() onwards.
+	/// Account with secrets keccak("0") is the validator for block 1 and with keccak("1") onwards.
 	pub fn new_validator_multi() -> Self { load_bundled!("validator_multi") }
 
 	/// Create a new spec for a PoW chain
@@ -543,7 +544,7 @@ mod tests {
 
 		assert_eq!(test_spec.state_root(), H256::from_str("f3f4696bbf3b3b07775128eb7a3763279a394e382130f27c21e70233e04946a9").unwrap());
 		let genesis = test_spec.genesis_block();
-		assert_eq!(BlockView::new(&genesis).header_view().sha3(), H256::from_str("0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303").unwrap());
+		assert_eq!(BlockView::new(&genesis).header_view().hash(), H256::from_str("0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303").unwrap());
 	}
 
 	#[test]

ethcore/src/state/account.rs

@@ -19,6 +19,7 @@
 use std::fmt;
 use std::sync::Arc;
 use std::collections::HashMap;
+use hash::{KECCAK_EMPTY, KECCAK_NULL_RLP, keccak};
 use util::*;
 use pod_account::*;
 use rlp::*;
@@ -81,10 +82,10 @@ impl Account {
 		Account {
 			balance: balance,
 			nonce: nonce,
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			storage_cache: Self::empty_storage_cache(),
 			storage_changes: storage,
-			code_hash: code.sha3(),
+			code_hash: keccak(&code),
 			code_size: Some(code.len()),
 			code_cache: Arc::new(code),
 			code_filth: Filth::Dirty,
@@ -101,10 +102,10 @@ impl Account {
 		Account {
 			balance: pod.balance,
 			nonce: pod.nonce,
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			storage_cache: Self::empty_storage_cache(),
 			storage_changes: pod.storage.into_iter().collect(),
-			code_hash: pod.code.as_ref().map_or(SHA3_EMPTY, |c| c.sha3()),
+			code_hash: pod.code.as_ref().map_or(KECCAK_EMPTY, |c| keccak(c)),
 			code_filth: Filth::Dirty,
 			code_size: Some(pod.code.as_ref().map_or(0, |c| c.len())),
 			code_cache: Arc::new(pod.code.map_or_else(|| { warn!("POD account with unknown code is being created! Assuming no code."); vec![] }, |c| c)),
@@ -117,10 +118,10 @@ impl Account {
 		Account {
 			balance: balance,
 			nonce: nonce,
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			storage_cache: Self::empty_storage_cache(),
 			storage_changes: HashMap::new(),
-			code_hash: SHA3_EMPTY,
+			code_hash: KECCAK_EMPTY,
 			code_cache: Arc::new(vec![]),
 			code_size: Some(0),
 			code_filth: Filth::Clean,
@@ -140,10 +141,10 @@ impl Account {
 		Account {
 			balance: balance,
 			nonce: nonce,
-			storage_root: SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 			storage_cache: Self::empty_storage_cache(),
 			storage_changes: HashMap::new(),
-			code_hash: SHA3_EMPTY,
+			code_hash: KECCAK_EMPTY,
 			code_cache: Arc::new(vec![]),
 			code_size: None,
 			code_filth: Filth::Clean,
@@ -154,7 +155,7 @@ impl Account {
 	/// Set this account's code to the given code.
 	/// NOTE: Account should have been created with `new_contract()`
 	pub fn init_code(&mut self, code: Bytes) {
-		self.code_hash = code.sha3();
+		self.code_hash = keccak(&code);
 		self.code_cache = Arc::new(code);
 		self.code_size = Some(self.code_cache.len());
 		self.code_filth = Filth::Dirty;
@@ -211,7 +212,7 @@ impl Account {
 	pub fn address_hash(&self, address: &Address) -> H256 {
 		let hash = self.address_hash.get();
 		hash.unwrap_or_else(|| {
-			let hash = address.sha3();
+			let hash = keccak(address);
 			self.address_hash.set(Some(hash.clone()));
 			hash
 		})
@@ -220,7 +221,7 @@ impl Account {
 	/// returns the account's code. If `None` then the code cache isn't available -
 	/// get someone who knows to call `note_code`.
 	pub fn code(&self) -> Option<Arc<Bytes>> {
-		if self.code_hash != SHA3_EMPTY && self.code_cache.is_empty() {
+		if self.code_hash != KECCAK_EMPTY && self.code_cache.is_empty() {
 			return None;
 		}
 		Some(self.code_cache.clone())
@@ -235,7 +236,7 @@ impl Account {
 	#[cfg(test)]
 	/// Provide a byte array which hashes to the `code_hash`. returns the hash as a result.
 	pub fn note_code(&mut self, code: Bytes) -> Result<(), H256> {
-		let h = code.sha3();
+		let h = keccak(&code);
 		if self.code_hash == h {
 			self.code_cache = Arc::new(code);
 			self.code_size = Some(self.code_cache.len());
@@ -247,7 +248,7 @@ impl Account {
 
 	/// Is `code_cache` valid; such that code is going to return Some?
 	pub fn is_cached(&self) -> bool {
-		!self.code_cache.is_empty() || (self.code_cache.is_empty() && self.code_hash == SHA3_EMPTY)
+		!self.code_cache.is_empty() || (self.code_cache.is_empty() && self.code_hash == KECCAK_EMPTY)
 	}
 
 	/// Provide a database to get `code_hash`. Should not be called if it is a contract without code.
@@ -284,7 +285,7 @@ impl Account {
 		// TODO: fill out self.code_cache;
 		trace!("Account::cache_code_size: ic={}; self.code_hash={:?}, self.code_cache={}", self.is_cached(), self.code_hash, self.code_cache.pretty());
 		self.code_size.is_some() ||
-			if self.code_hash != SHA3_EMPTY {
+			if self.code_hash != KECCAK_EMPTY {
 				match db.get(&self.code_hash) {
 					Some(x) => {
 						self.code_size = Some(x.len());
@@ -308,19 +309,19 @@ impl Account {
 	/// NOTE: Will panic if `!self.storage_is_clean()`
 	pub fn is_empty(&self) -> bool {
 		assert!(self.storage_is_clean(), "Account::is_empty() may only legally be called when storage is clean.");
-		self.is_null() && self.storage_root == SHA3_NULL_RLP
+		self.is_null() && self.storage_root == KECCAK_NULL_RLP
 	}
 
 	/// Check if account has zero nonce, balance, no code.
 	pub fn is_null(&self) -> bool {
 		self.balance.is_zero() &&
 		self.nonce.is_zero() &&
-		self.code_hash == SHA3_EMPTY
+		self.code_hash == KECCAK_EMPTY
 	}
 
 	/// Check if account is basic (Has no code).
 	pub fn is_basic(&self) -> bool {
-		self.code_hash == SHA3_EMPTY
+		self.code_hash == KECCAK_EMPTY
 	}
 
 	/// Return the storage root associated with this account or None if it has been altered via the overlay.
@@ -592,8 +593,8 @@ mod tests {
 		assert_eq!(a.rlp().to_hex(), "f8448045a056e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421a0c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470");
 		assert_eq!(a.balance(), &U256::from(69u8));
 		assert_eq!(a.nonce(), &U256::from(0u8));
-		assert_eq!(a.code_hash(), SHA3_EMPTY);
+		assert_eq!(a.code_hash(), KECCAK_EMPTY);
-		assert_eq!(a.storage_root().unwrap(), &SHA3_NULL_RLP);
+		assert_eq!(a.storage_root().unwrap(), &KECCAK_NULL_RLP);
 	}
 
 	#[test]

ethcore/src/state/mod.rs

@@ -24,6 +24,7 @@ use std::collections::hash_map::Entry;
 use std::collections::{HashMap, BTreeMap, HashSet};
 use std::fmt;
 use std::sync::Arc;
+use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY};
 
 use receipt::Receipt;
 use engines::Engine;
@@ -552,7 +553,7 @@ impl<B: Backend> State<B> {
 	/// Get an account's code hash.
 	pub fn code_hash(&self, a: &Address) -> trie::Result<H256> {
 		self.ensure_cached(a, RequireCache::None, true,
-			|a| a.as_ref().map_or(SHA3_EMPTY, |a| a.code_hash()))
+			|a| a.as_ref().map_or(KECCAK_EMPTY, |a| a.code_hash()))
 	}
 
 	/// Get accounts' code size.
@@ -938,7 +939,7 @@ impl<B: Backend> State<B> {
 	/// Returns a merkle proof of the account's trie node omitted or an encountered trie error.
 	/// If the account doesn't exist in the trie, prove that and return defaults.
 	/// Requires a secure trie to be used for accurate results.
-	/// `account_key` == sha3(address)
+	/// `account_key` == keccak(address)
 	pub fn prove_account(&self, account_key: H256) -> trie::Result<(Vec<Bytes>, BasicAccount)> {
 		let mut recorder = Recorder::new();
 		let trie = TrieDB::new(self.db.as_hashdb(), &self.root)?;
@@ -949,8 +950,8 @@ impl<B: Backend> State<B> {
 		let account = maybe_account.unwrap_or_else(|| BasicAccount {
 			balance: 0.into(),
 			nonce: self.account_start_nonce,
-			code_hash: SHA3_EMPTY,
+			code_hash: KECCAK_EMPTY,
-			storage_root: ::util::sha3::SHA3_NULL_RLP,
+			storage_root: KECCAK_NULL_RLP,
 		});
 
 		Ok((recorder.drain().into_iter().map(|r| r.data).collect(), account))
@@ -959,11 +960,11 @@ impl<B: Backend> State<B> {
 	/// Prove an account's storage key's existence or nonexistence in the state.
 	/// Returns a merkle proof of the account's storage trie.
 	/// Requires a secure trie to be used for correctness.
-	/// `account_key` == sha3(address)
+	/// `account_key` == keccak(address)
-	/// `storage_key` == sha3(key)
+	/// `storage_key` == keccak(key)
 	pub fn prove_storage(&self, account_key: H256, storage_key: H256) -> trie::Result<(Vec<Bytes>, H256)> {
 		// TODO: probably could look into cache somehow but it's keyed by
-		// address, not sha3(address).
+		// address, not keccak(address).
 		let trie = TrieDB::new(self.db.as_hashdb(), &self.root)?;
 		let acc = match trie.get_with(&account_key, Account::from_rlp)? {
 			Some(acc) => acc,
@@ -1008,13 +1009,13 @@ impl Clone for State<StateDB> {
 
 #[cfg(test)]
 mod tests {
-
 	use std::sync::Arc;
 	use std::str::FromStr;
 	use rustc_hex::FromHex;
+	use hash::keccak;
 	use super::*;
 	use ethkey::Secret;
-	use util::{U256, H256, Address, Hashable};
+	use util::{U256, H256, Address};
 	use tests::helpers::*;
 	use vm::EnvInfo;
 	use spec::*;
@@ -1024,7 +1025,7 @@ mod tests {
 	use evm::CallType;
 
 	fn secret() -> Secret {
-		"".sha3().into()
+		keccak("").into()
 	}
 
 	#[test]

ethcore/src/state_db.rs

@@ -24,7 +24,8 @@ use util::hash::{H256};
 use util::hashdb::HashDB;
 use state::{self, Account};
 use header::BlockNumber;
-use util::{Address, DBTransaction, UtilError, Mutex, Hashable};
+use hash::keccak;
+use util::{Address, DBTransaction, UtilError, Mutex};
 use bloom_journal::{Bloom, BloomJournal};
 use db::COL_ACCOUNT_BLOOM;
 use byteorder::{LittleEndian, ByteOrder};
@@ -443,13 +444,13 @@ impl state::Backend for StateDB {
 	fn note_non_null_account(&self, address: &Address) {
 		trace!(target: "account_bloom", "Note account bloom: {:?}", address);
 		let mut bloom = self.account_bloom.lock();
-		bloom.set(&*address.sha3());
+		bloom.set(&*keccak(address));
 	}
 
 	fn is_known_null(&self, address: &Address) -> bool {
 		trace!(target: "account_bloom", "Check account bloom: {:?}", address);
 		let bloom = self.account_bloom.lock();
-		let is_null = !bloom.check(&*address.sha3());
+		let is_null = !bloom.check(&*keccak(address));
 		is_null
 	}
 }

ethcore/src/tests/client.rs

@@ -16,6 +16,7 @@
 
 use std::str::FromStr;
 use std::sync::Arc;
+use hash::keccak;
 use io::IoChannel;
 use client::{BlockChainClient, MiningBlockChainClient, Client, ClientConfig, BlockId};
 use state::{self, State, CleanupMode};
@@ -254,7 +255,7 @@ fn can_mine() {
 
 	let b = client.prepare_open_block(Address::default(), (3141562.into(), 31415620.into()), vec![]).close();
 
-	assert_eq!(*b.block().header().parent_hash(), BlockView::new(&dummy_blocks[0]).header_view().sha3());
+	assert_eq!(*b.block().header().parent_hash(), BlockView::new(&dummy_blocks[0]).header_view().hash());
 }
 
 #[test]
@@ -298,7 +299,7 @@ fn change_history_size() {
 
 #[test]
 fn does_not_propagate_delayed_transactions() {
-	let key = KeyPair::from_secret("test".sha3().into()).unwrap();
+	let key = KeyPair::from_secret(keccak("test").into()).unwrap();
 	let secret = key.secret();
 	let tx0 = PendingTransaction::new(Transaction {
 		nonce: 0.into(),

ethcore/src/tests/evm.rs

@@ -1,6 +1,7 @@
 //! Tests of EVM integration with transaction execution.
 
 use std::sync::Arc;
+use hash::keccak;
 use vm::{EnvInfo, ActionParams, ActionValue, CallType};
 use evm::{Factory, VMType};
 use executive::Executive;
@@ -16,11 +17,11 @@ use util::*;
 evm_test!{test_blockhash_eip210: test_blockhash_eip210_jit, test_blockhash_eip210_int}
 fn test_blockhash_eip210(factory: Factory) {
 	let get_prev_hash_code = Arc::new("600143034060205260206020f3".from_hex().unwrap()); // this returns previous block hash
-	let get_prev_hash_code_hash = get_prev_hash_code.sha3();
+	let get_prev_hash_code_hash = keccak(get_prev_hash_code.as_ref());
 	// This is same as DEFAULT_BLOCKHASH_CONTRACT except for metropolis transition block check removed.
 	let test_blockhash_contract = "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";
 	let blockhash_contract_code = Arc::new(test_blockhash_contract.from_hex().unwrap());
-	let blockhash_contract_code_hash = blockhash_contract_code.sha3();
+	let blockhash_contract_code_hash = keccak(blockhash_contract_code.as_ref());
 	let engine = TestEngine::new_metropolis();
 	let mut env_info = EnvInfo::default();
 

ethcore/src/tests/helpers.rs

@@ -16,6 +16,7 @@
 
 use std::collections::BTreeMap;
 use std::sync::Arc;
+use hash::keccak;
 use ethkey::KeyPair;
 use io::*;
 use client::{BlockChainClient, Client, ClientConfig};
@@ -178,7 +179,7 @@ pub fn generate_dummy_client_with_spec_accounts_and_data<F>(get_test_spec: F, ac
 	let mut last_hashes = vec![];
 	let mut last_header = genesis_header.clone();
 
-	let kp = KeyPair::from_secret_slice(&"".sha3()).unwrap();
+	let kp = KeyPair::from_secret_slice(&keccak("")).unwrap();
 	let author = kp.address();
 
 	let mut n = 0;

ethcore/src/tests/trace.rs

@@ -17,6 +17,7 @@
 //! Client tests of tracing
 
 use ethkey::KeyPair;
+use hash::keccak;
 use block::*;
 use util::*;
 use io::*;
@@ -62,14 +63,14 @@ fn can_trace_block_and_uncle_reward() {
 	//    |
 	// block with transaction and uncle
 
-	let genesis_header = spec.genesis_header();    
+	let genesis_header = spec.genesis_header();
 	let mut db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
 	let mut rolling_timestamp = 40;
 	let mut last_hashes = vec![];
 	let mut last_header = genesis_header.clone();
 	last_hashes.push(last_header.hash());
 
-	let kp = KeyPair::from_secret_slice(&"".sha3()).unwrap();
+	let kp = KeyPair::from_secret_slice(&keccak("")).unwrap();
 	let author = kp.address();
 
 	// Add root block first
@@ -89,7 +90,7 @@ fn can_trace_block_and_uncle_reward() {
 	rolling_timestamp += 10;
 	root_block.set_timestamp(rolling_timestamp);
 
-	let root_block = root_block.close_and_lock().seal(engine, vec![]).unwrap();	
+	let root_block = root_block.close_and_lock().seal(engine, vec![]).unwrap();
 
 	if let Err(e) = client.import_block(root_block.rlp_bytes()) {
 		panic!("error importing block which is valid by definition: {:?}", e);
@@ -118,7 +119,7 @@ fn can_trace_block_and_uncle_reward() {
 	rolling_timestamp += 10;
 	parent_block.set_timestamp(rolling_timestamp);
 
-	let parent_block = parent_block.close_and_lock().seal(engine, vec![]).unwrap();	
+	let parent_block = parent_block.close_and_lock().seal(engine, vec![]).unwrap();
 
 	if let Err(e) = client.import_block(parent_block.rlp_bytes()) {
 		panic!("error importing block which is valid by definition: {:?}", e);
@@ -131,14 +132,14 @@ fn can_trace_block_and_uncle_reward() {
 
 	// Add testing block with transaction and uncle
 	let mut block = OpenBlock::new(
-		engine, 
+		engine,
-		Default::default(), 
+		Default::default(),
-		true, 
+		true,
-		db, 
+		db,
-		&last_header, 
+		&last_header,
 		Arc::new(last_hashes.clone()),
 		author.clone(),
-		(3141562.into(), 31415620.into()), 
+		(3141562.into(), 31415620.into()),
 		vec![],
 		false
 		).unwrap();
@@ -172,7 +173,7 @@ fn can_trace_block_and_uncle_reward() {
 
 	let res = client.import_block(block.rlp_bytes());
 	if res.is_err() {
-		panic!("error importing block: {:#?}", res.err().unwrap());        
+		panic!("error importing block: {:#?}", res.err().unwrap());
 	}
 
 	block.drain();
@@ -202,5 +203,5 @@ fn can_trace_block_and_uncle_reward() {
 
 	// Test1. Check block filter
 	let traces = client.block_traces(BlockId::Number(3));
-	assert_eq!(traces.unwrap().len(), 3);	
+	assert_eq!(traces.unwrap().len(), 3);
 }

ethcore/src/trace/types/filter.rs

@@ -18,8 +18,8 @@
 
 use std::ops::Range;
 use bloomchain::{Filter as BloomFilter, Bloom, Number};
+use hash::keccak;
 use util::Address;
-use util::sha3::Hashable;
 use bloomable::Bloomable;
 use basic_types::LogBloom;
 use trace::flat::FlatTrace;
@@ -55,7 +55,7 @@ impl AddressesFilter {
 		match self.list.is_empty() {
 			true => vec![LogBloom::default()],
 			false => self.list.iter()
-				.map(|address| LogBloom::from_bloomed(&address.sha3()))
+				.map(|address| LogBloom::from_bloomed(&keccak(address)))
 				.collect(),
 		}
 	}
@@ -67,7 +67,7 @@ impl AddressesFilter {
 			false => blooms
 				.into_iter()
 				.flat_map(|bloom| self.list.iter()
-					.map(|address| bloom.with_bloomed(&address.sha3()))
+					.map(|address| bloom.with_bloomed(&keccak(address)))
 					.collect::<Vec<_>>())
 				.collect(),
 		}
@@ -139,7 +139,7 @@ impl Filter {
 #[cfg(test)]
 mod tests {
 	use util::Address;
-	use util::sha3::Hashable;
+	use hash::keccak;
 	use bloomable::Bloomable;
 	use trace::trace::{Action, Call, Res, Create, CreateResult, Suicide, Reward};
 	use trace::flat::FlatTrace;
@@ -169,9 +169,9 @@ mod tests {
 		let blooms = filter.bloom_possibilities();
 		assert_eq!(blooms.len(), 1);
 
-		assert!(blooms[0].contains_bloomed(&Address::from(1).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(1))));
-		assert!(blooms[0].contains_bloomed(&Address::from(2).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(2))));
-		assert!(!blooms[0].contains_bloomed(&Address::from(3).sha3()));
+		assert!(!blooms[0].contains_bloomed(&keccak(Address::from(3))));
 	}
 
 	#[test]
@@ -185,8 +185,8 @@ mod tests {
 		let blooms = filter.bloom_possibilities();
 		assert_eq!(blooms.len(), 1);
 
-		assert!(blooms[0].contains_bloomed(&Address::from(1).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(1))));
-		assert!(!blooms[0].contains_bloomed(&Address::from(2).sha3()));
+		assert!(!blooms[0].contains_bloomed(&keccak(Address::from(2))));
 	}
 
 	#[test]
@@ -200,8 +200,8 @@ mod tests {
 		let blooms = filter.bloom_possibilities();
 		assert_eq!(blooms.len(), 1);
 
-		assert!(blooms[0].contains_bloomed(&Address::from(1).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(1))));
-		assert!(!blooms[0].contains_bloomed(&Address::from(2).sha3()));
+		assert!(!blooms[0].contains_bloomed(&keccak(Address::from(2))));
 	}
 
 	#[test]
@@ -215,25 +215,25 @@ mod tests {
 		let blooms = filter.bloom_possibilities();
 		assert_eq!(blooms.len(), 4);
 
-		assert!(blooms[0].contains_bloomed(&Address::from(1).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(1))));
-		assert!(blooms[0].contains_bloomed(&Address::from(2).sha3()));
+		assert!(blooms[0].contains_bloomed(&keccak(Address::from(2))));
-		assert!(!blooms[0].contains_bloomed(&Address::from(3).sha3()));
+		assert!(!blooms[0].contains_bloomed(&keccak(Address::from(3))));
-		assert!(!blooms[0].contains_bloomed(&Address::from(4).sha3()));
+		assert!(!blooms[0].contains_bloomed(&keccak(Address::from(4))));
 
-		assert!(blooms[1].contains_bloomed(&Address::from(1).sha3()));
+		assert!(blooms[1].contains_bloomed(&keccak(Address::from(1))));
-		assert!(blooms[1].contains_bloomed(&Address::from(4).sha3()));
+		assert!(blooms[1].contains_bloomed(&keccak(Address::from(4))));
-		assert!(!blooms[1].contains_bloomed(&Address::from(2).sha3()));
+		assert!(!blooms[1].contains_bloomed(&keccak(Address::from(2))));
-		assert!(!blooms[1].contains_bloomed(&Address::from(3).sha3()));
+		assert!(!blooms[1].contains_bloomed(&keccak(Address::from(3))));
 
-		assert!(blooms[2].contains_bloomed(&Address::from(2).sha3()));
+		assert!(blooms[2].contains_bloomed(&keccak(Address::from(2))));
-		assert!(blooms[2].contains_bloomed(&Address::from(3).sha3()));
+		assert!(blooms[2].contains_bloomed(&keccak(Address::from(3))));
-		assert!(!blooms[2].contains_bloomed(&Address::from(1).sha3()));
+		assert!(!blooms[2].contains_bloomed(&keccak(Address::from(1))));
-		assert!(!blooms[2].contains_bloomed(&Address::from(4).sha3()));
+		assert!(!blooms[2].contains_bloomed(&keccak(Address::from(4))));
 
-		assert!(blooms[3].contains_bloomed(&Address::from(3).sha3()));
+		assert!(blooms[3].contains_bloomed(&keccak(Address::from(3))));
-		assert!(blooms[3].contains_bloomed(&Address::from(4).sha3()));
+		assert!(blooms[3].contains_bloomed(&keccak(Address::from(4))));
-		assert!(!blooms[3].contains_bloomed(&Address::from(1).sha3()));
+		assert!(!blooms[3].contains_bloomed(&keccak(Address::from(1))));
-		assert!(!blooms[3].contains_bloomed(&Address::from(2).sha3()));
+		assert!(!blooms[3].contains_bloomed(&keccak(Address::from(2))));
 	}
 
 	#[test]

ethcore/src/trace/types/trace.rs

@@ -17,7 +17,7 @@
 //! Tracing datatypes.
 
 use util::{U256, Bytes, Address};
-use util::sha3::Hashable;
+use hash::keccak;
 use bloomable::Bloomable;
 use rlp::*;
 
@@ -51,7 +51,7 @@ pub struct CreateResult {
 impl CreateResult {
 	/// Returns bloom.
 	pub fn bloom(&self) -> LogBloom {
-		LogBloom::from_bloomed(&self.address.sha3())
+		LogBloom::from_bloomed(&keccak(&self.address))
 	}
 }
 
@@ -90,8 +90,8 @@ impl Call {
 	/// Returns call action bloom.
 	/// The bloom contains from and to addresses.
 	pub fn bloom(&self) -> LogBloom {
-		LogBloom::from_bloomed(&self.from.sha3())
+		LogBloom::from_bloomed(&keccak(&self.from))
-			.with_bloomed(&self.to.sha3())
+			.with_bloomed(&keccak(&self.to))
 	}
 }
 
@@ -124,7 +124,7 @@ impl Create {
 	/// Returns bloom create action bloom.
 	/// The bloom contains only from address.
 	pub fn bloom(&self) -> LogBloom {
-		LogBloom::from_bloomed(&self.from.sha3())
+		LogBloom::from_bloomed(&keccak(&self.from))
 	}
 }
 
@@ -173,7 +173,7 @@ pub struct Reward {
 impl Reward {
 	/// Return reward action bloom.
 	pub fn bloom(&self) -> LogBloom {
-		LogBloom::from_bloomed(&self.author.sha3())
+		LogBloom::from_bloomed(&keccak(&self.author))
 	}
 }
 
@@ -214,8 +214,8 @@ pub struct Suicide {
 impl Suicide {
 	/// Return suicide action bloom.
 	pub fn bloom(&self) -> LogBloom {
-		LogBloom::from_bloomed(&self.address.sha3())
+		LogBloom::from_bloomed(&keccak(self.address))
-			.with_bloomed(&self.refund_address.sha3())
+			.with_bloomed(&keccak(self.refund_address))
 	}
 }
 

ethcore/src/transaction.rs

@@ -18,7 +18,7 @@
 
 use std::ops::Deref;
 use rlp::*;
-use util::sha3::Hashable;
+use hash::keccak;
 use heapsize::HeapSizeOf;
 use util::{H256, Address, U256, Bytes};
 use ethkey::{Signature, Secret, Public, recover, public_to_address, Error as EthkeyError};
@@ -167,7 +167,7 @@ impl Transaction {
 	pub fn hash(&self, chain_id: Option<u64>) -> H256 {
 		let mut stream = RlpStream::new();
 		self.rlp_append_unsigned_transaction(&mut stream, chain_id);
-		stream.as_raw().sha3()
+		keccak(stream.as_raw())
 	}
 
 	/// Signs the transaction as coming from `sender`.
@@ -274,7 +274,7 @@ impl Decodable for UnverifiedTransaction {
 		if d.item_count()? != 9 {
 			return Err(DecoderError::RlpIncorrectListLen);
 		}
-		let hash = d.as_raw().sha3();
+		let hash = keccak(d.as_raw());
 		Ok(UnverifiedTransaction {
 			unsigned: Transaction {
 				nonce: d.val_at(0)?,
@@ -299,7 +299,7 @@ impl Encodable for UnverifiedTransaction {
 impl UnverifiedTransaction {
 	/// Used to compute hash of created transactions
 	fn compute_hash(mut self) -> UnverifiedTransaction {
-		let hash = (&*self.rlp_bytes()).sha3();
+		let hash = keccak(&*self.rlp_bytes());
 		self.hash = hash;
 		self
 	}
@@ -357,7 +357,7 @@ impl UnverifiedTransaction {
 		}
 	}
 
-	/// Get the hash of this header (sha3 of the RLP).
+	/// Get the hash of this header (keccak of the RLP).
 	pub fn hash(&self) -> H256 {
 		self.hash
 	}
@@ -545,7 +545,8 @@ impl From<SignedTransaction> for PendingTransaction {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use util::{Hashable, U256};
+	use util::{U256};
+	use hash::keccak;
 
 	#[test]
 	fn sender_test() {
@@ -575,7 +576,7 @@ mod tests {
 			value: U256::from(1),
 			data: b"Hello!".to_vec()
 		}.sign(&key.secret(), None);
-		assert_eq!(Address::from(key.public().sha3()), t.sender());
+		assert_eq!(Address::from(keccak(key.public())), t.sender());
 		assert_eq!(t.chain_id(), None);
 	}
 
@@ -609,7 +610,7 @@ mod tests {
 			value: U256::from(1),
 			data: b"Hello!".to_vec()
 		}.sign(&key.secret(), Some(69));
-		assert_eq!(Address::from(key.public().sha3()), t.sender());
+		assert_eq!(Address::from(keccak(key.public())), t.sender());
 		assert_eq!(t.chain_id(), Some(69));
 	}
 

ethcore/src/verification/verification.rs

@@ -22,6 +22,7 @@
 //! 3. Final verification against the blockchain done before enactment.
 
 use std::collections::HashSet;
+use hash::keccak;
 use heapsize::HeapSizeOf;
 use util::*;
 use engines::Engine;
@@ -257,7 +258,7 @@ fn verify_block_integrity(block: &[u8], transactions_root: &H256, uncles_hash: &
 	if expected_root != transactions_root {
 		return Err(From::from(BlockError::InvalidTransactionsRoot(Mismatch { expected: expected_root.clone(), found: transactions_root.clone() })))
 	}
-	let expected_uncles = &block.at(2)?.as_raw().sha3();
+	let expected_uncles = &keccak(block.at(2)?.as_raw());
 	if expected_uncles != uncles_hash {
 		return Err(From::from(BlockError::InvalidUnclesHash(Mismatch { expected: expected_uncles.clone(), found: uncles_hash.clone() })))
 	}
@@ -267,6 +268,7 @@ fn verify_block_integrity(block: &[u8], transactions_root: &H256, uncles_hash: &
 #[cfg(test)]
 mod tests {
 	use std::collections::{BTreeMap, HashMap};
+	use hash::keccak;
 	use util::*;
 	use ethkey::{Random, Generator};
 	use header::*;
@@ -325,7 +327,7 @@ mod tests {
 
 		pub fn insert(&mut self, bytes: Bytes) {
 			let number = BlockView::new(&bytes).header_view().number();
-			let hash = BlockView::new(&bytes).header_view().sha3();
+			let hash = BlockView::new(&bytes).header_view().hash();
 			self.blocks.insert(hash.clone(), bytes);
 			self.numbers.insert(number, hash.clone());
 		}
@@ -483,7 +485,7 @@ mod tests {
 		let good_uncles = vec![ good_uncle1.clone(), good_uncle2.clone() ];
 		let mut uncles_rlp = RlpStream::new();
 		uncles_rlp.append_list(&good_uncles);
-		let good_uncles_hash = uncles_rlp.as_raw().sha3();
+		let good_uncles_hash = keccak(uncles_rlp.as_raw());
 		let good_transactions_root = ordered_trie_root(good_transactions.iter().map(|t| ::rlp::encode::<UnverifiedTransaction>(t).into_vec()));
 
 		let mut parent = good.clone();

ethcore/src/views/block.rs

@@ -16,6 +16,7 @@
 
 //! View onto block rlp.
 
+use hash::keccak;
 use util::*;
 use header::*;
 use transaction::*;
@@ -44,7 +45,7 @@ impl<'a> BlockView<'a> {
 
 	/// Block header hash.
 	pub fn hash(&self) -> H256 {
-		self.sha3()
+		self.header_view().hash()
 	}
 
 	/// Return reference to underlaying rlp.
@@ -75,7 +76,7 @@ impl<'a> BlockView<'a> {
 	/// Return List of transactions with additional localization info.
 	pub fn localized_transactions(&self) -> Vec<LocalizedTransaction> {
 		let header = self.header_view();
-		let block_hash = header.sha3();
+		let block_hash = header.hash();
 		let block_number = header.number();
 		self.transactions()
 			.into_iter()
@@ -101,7 +102,7 @@ impl<'a> BlockView<'a> {
 
 	/// Return transaction hashes.
 	pub fn transaction_hashes(&self) -> Vec<H256> {
-		self.rlp.at(1).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+		self.rlp.at(1).iter().map(|rlp| keccak(rlp.as_raw())).collect()
 	}
 
 	/// Returns transaction at given index without deserializing unnecessary data.
@@ -112,7 +113,7 @@ impl<'a> BlockView<'a> {
 	/// Returns localized transaction at given index.
 	pub fn localized_transaction_at(&self, index: usize) -> Option<LocalizedTransaction> {
 		let header = self.header_view();
-		let block_hash = header.sha3();
+		let block_hash = header.hash();
 		let block_number = header.number();
 		self.transaction_at(index).map(|t| LocalizedTransaction {
 			signed: t,
@@ -140,7 +141,7 @@ impl<'a> BlockView<'a> {
 
 	/// Return list of uncle hashes of given block.
 	pub fn uncle_hashes(&self) -> Vec<H256> {
-		self.rlp.at(2).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+		self.rlp.at(2).iter().map(|rlp| keccak(rlp.as_raw())).collect()
 	}
 
 	/// Return nth uncle.
@@ -154,12 +155,6 @@ impl<'a> BlockView<'a> {
 	}
 }
 
-impl<'a> Hashable for BlockView<'a> {
-	fn sha3(&self) -> H256 {
-		self.header_view().sha3()
-	}
-}
-
 #[cfg(test)]
 mod tests {
 	use std::str::FromStr;

ethcore/src/views/body.rs

@@ -16,6 +16,7 @@
 
 //! View onto block body rlp.
 
+use hash::keccak;
 use util::*;
 use header::*;
 use transaction::*;
@@ -78,7 +79,7 @@ impl<'a> BodyView<'a> {
 
 	/// Return transaction hashes.
 	pub fn transaction_hashes(&self) -> Vec<H256> {
-		self.rlp.at(0).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+		self.rlp.at(0).iter().map(|rlp| keccak(rlp.as_raw())).collect()
 	}
 
 	/// Returns transaction at given index without deserializing unnecessary data.
@@ -114,7 +115,7 @@ impl<'a> BodyView<'a> {
 
 	/// Return list of uncle hashes of given block.
 	pub fn uncle_hashes(&self) -> Vec<H256> {
-		self.rlp.at(1).iter().map(|rlp| rlp.as_raw().sha3()).collect()
+		self.rlp.at(1).iter().map(|rlp| keccak(rlp.as_raw())).collect()
 	}
 
 	/// Return nth uncle.

ethcore/src/views/header.rs

@@ -16,7 +16,8 @@
 
 //! View onto block header rlp
 
-use util::{U256, Bytes, Hashable, H256, Address, H2048};
+use hash::keccak;
+use util::{U256, Bytes, H256, Address, H2048};
 use rlp::Rlp;
 use header::BlockNumber;
 
@@ -41,7 +42,9 @@ impl<'a> HeaderView<'a> {
 	}
 
 	/// Returns header hash.
-	pub fn hash(&self) -> H256 { self.sha3() }
+	pub fn hash(&self) -> H256 {
+		keccak(self.rlp.as_raw())
+	}
 
 	/// Returns raw rlp.
 	pub fn rlp(&self) -> &Rlp<'a> { &self.rlp }
@@ -95,12 +98,6 @@ impl<'a> HeaderView<'a> {
 	}
 }
 
-impl<'a> Hashable for HeaderView<'a> {
-	fn sha3(&self) -> H256 {
-		self.rlp.as_raw().sha3()
-	}
-}
-
 #[cfg(test)]
 mod tests {
 	use std::str::FromStr;

ethcore/src/views/transaction.rs

@@ -15,7 +15,8 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! View onto transaction rlp
-use util::{U256, Bytes, Hashable, H256};
+use util::{U256, Bytes, H256};
+use hash::keccak;
 use rlp::Rlp;
 
 /// View onto transaction rlp.
@@ -43,6 +44,11 @@ impl<'a> TransactionView<'a> {
 		&self.rlp
 	}
 
+	/// Returns transaction hash.
+	pub fn hash(&self) -> H256 {
+		keccak(self.rlp.as_raw())
+	}
+
 	/// Get the nonce field of the transaction.
 	pub fn nonce(&self) -> U256 { self.rlp.val_at(0) }
 
@@ -68,12 +74,6 @@ impl<'a> TransactionView<'a> {
 	pub fn s(&self) -> U256 { self.rlp.val_at(8) }
 }
 
-impl<'a> Hashable for TransactionView<'a> {
-	fn sha3(&self) -> H256 {
-		self.rlp.as_raw().sha3()
-	}
-}
-
 #[cfg(test)]
 mod tests {
 	use std::str::FromStr;

ethcore/types/Cargo.toml

@@ -10,6 +10,7 @@ rlp_derive = { path = "../../util/rlp_derive" }
 ethcore-util = { path = "../../util" }
 ethjson = { path = "../../json" }
 bloomable = { path = "../../util/bloomable" }
+hash = { path = "../../util/hash" }
 heapsize = "0.4"
 
 [dev-dependencies]

ethcore/types/src/filter.rs

@@ -16,10 +16,11 @@
 
 //! Blockchain filter
 
-use util::{Address, H256, Hashable, H2048};
+use util::{Address, H256, H2048};
 use bloomable::Bloomable;
 use ids::BlockId;
 use log_entry::LogEntry;
+use hash::keccak;
 
 /// Blockchain Filter.
 #[derive(Debug, PartialEq)]
@@ -78,7 +79,7 @@ impl Filter {
 			Some(ref addresses) if !addresses.is_empty() =>
 				addresses.iter().map(|ref address| {
 					let mut bloom = H2048::default();
-					bloom.shift_bloomed(&address.sha3());
+					bloom.shift_bloomed(&keccak(address));
 					bloom
 				}).collect(),
 			_ => vec![H2048::default()]
@@ -89,7 +90,7 @@ impl Filter {
 			Some(ref topics) => bs.into_iter().flat_map(|bloom| {
 				topics.into_iter().map(|topic| {
 					let mut b = bloom.clone();
-					b.shift_bloomed(&topic.sha3());
+					b.shift_bloomed(&keccak(topic));
 					b
 				}).collect::<Vec<H2048>>()
 			}).collect()

ethcore/types/src/lib.rs

@@ -22,6 +22,7 @@ extern crate rlp;
 #[macro_use]
 extern crate rlp_derive;
 extern crate bloomable;
+extern crate hash;
 extern crate heapsize;
 
 #[cfg(test)]

ethcore/types/src/log_entry.rs

@@ -17,8 +17,9 @@
 //! Log entry type definition.
 
 use std::ops::Deref;
+use hash::keccak;
 use heapsize::HeapSizeOf;
-use util::{H256, Address, Bytes, Hashable};
+use util::{H256, Address, Bytes};
 use bloomable::Bloomable;
 
 use {BlockNumber};
@@ -46,7 +47,7 @@ impl HeapSizeOf for LogEntry {
 impl LogEntry {
 	/// Calculates the bloom of this log entry.
 	pub fn bloom(&self) -> LogBloom {
-		self.topics.iter().fold(LogBloom::from_bloomed(&self.address.sha3()), |b, t| b.with_bloomed(&t.sha3()))
+		self.topics.iter().fold(LogBloom::from_bloomed(&keccak(&self.address)), |b, t| b.with_bloomed(&keccak(t)))
 	}
 }
 

ethcore/vm/Cargo.toml

@@ -11,4 +11,5 @@ common-types = { path = "../types" }
 evmjit = { path = "../../evmjit", optional = true }
 ethjson = { path = "../../json" }
 lazy_static = "0.2"
-rlp = { path = "../../util/rlp" }
+rlp = { path = "../../util/rlp" }
+hash = { path = "../../util/hash" }

ethcore/vm/src/action_params.rs

@@ -17,7 +17,7 @@
 //! Evm input params.
 use util::{Address, Bytes, U256};
 use util::hash::{H256};
-use util::sha3::{Hashable, SHA3_EMPTY};
+use hash::{keccak, KECCAK_EMPTY};
 use ethjson;
 
 use call_type::CallType;
@@ -87,7 +87,7 @@ impl Default for ActionParams {
 	fn default() -> ActionParams {
 		ActionParams {
 			code_address: Address::new(),
-			code_hash: Some(SHA3_EMPTY),
+			code_hash: Some(KECCAK_EMPTY),
 			address: Address::new(),
 			sender: Address::new(),
 			origin: Address::new(),
@@ -106,7 +106,7 @@ impl From<ethjson::vm::Transaction> for ActionParams {
 		let address: Address = t.address.into();
 		ActionParams {
 			code_address: Address::new(),
-			code_hash: Some((&*t.code).sha3()),
+			code_hash: Some(keccak(&*t.code)),
 			address: address,
 			sender: t.sender.into(),
 			origin: t.origin.into(),

ethcore/vm/src/env_info.rs

@@ -18,7 +18,8 @@
 
 use std::cmp;
 use std::sync::Arc;
-use util::{U256, Address, H256, Hashable};
+use hash::keccak;
+use util::{U256, Address, H256};
 use types::BlockNumber;
 use ethjson;
 
@@ -68,7 +69,7 @@ impl From<ethjson::vm::Env> for EnvInfo {
 			difficulty: e.difficulty.into(),
 			gas_limit: e.gas_limit.into(),
 			timestamp: e.timestamp.into(),
-			last_hashes: Arc::new((1..cmp::min(number + 1, 257)).map(|i| format!("{}", number - i).as_bytes().sha3()).collect()),
+			last_hashes: Arc::new((1..cmp::min(number + 1, 257)).map(|i| keccak(format!("{}", number - i).as_bytes())).collect()),
 			gas_used: U256::default(),
 		}
 	}

ethcore/vm/src/lib.rs

@@ -20,6 +20,7 @@ extern crate ethcore_util as util;
 extern crate common_types as types;
 extern crate ethjson;
 extern crate rlp;
+extern crate hash;
 
 mod action_params;
 mod call_type;
@@ -45,4 +46,4 @@ pub trait Vm {
 	/// It returns either an error, a known amount of gas left, or parameters to be used
 	/// to compute the final gas left.
 	fn exec(&mut self, params: ActionParams, ext: &mut Ext) -> Result<GasLeft>;
-}
+}

hash-fetch/Cargo.toml

@@ -18,3 +18,4 @@ fetch = { path = "../util/fetch" }
 ethcore-util = { path = "../util" }
 parity-reactor = { path = "../util/reactor" }
 native-contracts = { path = "../ethcore/native_contracts" }
+hash = { path = "../util/hash" }

hash-fetch/src/client.rs

@@ -21,11 +21,12 @@ use std::io::Write;
 use std::sync::Arc;
 use std::path::PathBuf;
 
+use hash::keccak_buffer;
 use fetch::{Fetch, Response, Error as FetchError, Client as FetchClient};
 use futures::Future;
 use parity_reactor::Remote;
 use urlhint::{ContractClient, URLHintContract, URLHint, URLHintResult};
-use util::{H256, sha3};
+use util::H256;
 
 /// API for fetching by hash.
 pub trait HashFetch: Send + Sync + 'static {
@@ -101,7 +102,7 @@ fn validate_hash(path: PathBuf, hash: H256, result: Result<Response, FetchError>
 
 	// And validate the hash
 	let mut file_reader = io::BufReader::new(fs::File::open(&path)?);
-	let content_hash = sha3(&mut file_reader)?;
+	let content_hash = keccak_buffer(&mut file_reader)?;
 	if content_hash != hash {
 		Err(Error::HashMismatch{ got: content_hash, expected: hash })
 	} else {

hash-fetch/src/lib.rs

@@ -31,6 +31,7 @@ extern crate native_contracts;
 extern crate parity_reactor;
 extern crate rand;
 extern crate rustc_hex;
+extern crate hash;
 
 pub extern crate fetch;
 

hash-fetch/src/urlhint.rs

@@ -20,10 +20,11 @@ use std::sync::Arc;
 use rustc_hex::ToHex;
 use mime::Mime;
 use mime_guess;
+use hash::keccak;
 
 use futures::{future, BoxFuture, Future};
 use native_contracts::{Registry, Urlhint};
-use util::{Address, Bytes, Hashable};
+use util::{Address, Bytes};
 
 const COMMIT_LEN: usize = 20;
 
@@ -164,7 +165,7 @@ impl URLHint for URLHintContract {
 
 		let urlhint = self.urlhint.clone();
 		let client = self.client.clone();
-		self.registrar.get_address(do_call, "githubhint".sha3(), "A".into())
+		self.registrar.get_address(do_call, keccak("githubhint"), "A".into())
 			.map(|addr| if addr == Address::default() { None } else { Some(addr) })
 			.and_then(move |address| {
 				let mut fixed_id = [0; 32];

parity/blockchain.rs

@@ -21,7 +21,8 @@ use std::time::{Instant, Duration};
 use std::thread::sleep;
 use std::sync::Arc;
 use rustc_hex::FromHex;
-use util::{ToPretty, U256, H256, Address, Hashable};
+use hash::{keccak, KECCAK_NULL_RLP};
+use util::{ToPretty, U256, H256, Address};
 use rlp::PayloadInfo;
 use ethcore::service::ClientService;
 use ethcore::client::{Mode, DatabaseCompactionProfile, VMType, BlockImportError, BlockChainClient, BlockId};
@@ -639,13 +640,13 @@ fn execute_export_state(cmd: ExportState) -> Result<(), String> {
 			out.write_fmt(format_args!("\n\"0x{}\": {{\"balance\": \"{:x}\", \"nonce\": \"{:x}\"", account.hex(), balance, client.nonce(&account, at).unwrap_or_else(U256::zero))).expect("Write error");
 			let code = client.code(&account, at).unwrap_or(None).unwrap_or_else(Vec::new);
 			if !code.is_empty() {
-				out.write_fmt(format_args!(", \"code_hash\": \"0x{}\"", code.sha3().hex())).expect("Write error");
+				out.write_fmt(format_args!(", \"code_hash\": \"0x{}\"", keccak(&code).hex())).expect("Write error");
 				if cmd.code {
 					out.write_fmt(format_args!(", \"code\": \"{}\"", code.to_hex())).expect("Write error");
 				}
 			}
-			let storage_root = client.storage_root(&account, at).unwrap_or(::util::SHA3_NULL_RLP);
+			let storage_root = client.storage_root(&account, at).unwrap_or(KECCAK_NULL_RLP);
-			if storage_root != ::util::SHA3_NULL_RLP {
+			if storage_root != KECCAK_NULL_RLP {
 				out.write_fmt(format_args!(", \"storage_root\": \"0x{}\"", storage_root.hex())).expect("Write error");
 				if cmd.storage {
 					out.write_fmt(format_args!(", \"storage\": {{")).expect("Write error");

parity/configuration.rs

@@ -22,7 +22,8 @@ use std::collections::BTreeMap;
 use std::cmp::max;
 use std::str::FromStr;
 use cli::{Args, ArgsError};
-use util::{Hashable, H256, U256, Bytes, version_data, Address};
+use hash::keccak;
+use util::{H256, U256, Bytes, version_data, Address};
 use util::journaldb::Algorithm;
 use util::Colour;
 use ethsync::{NetworkConfiguration, is_valid_node_url};
@@ -506,7 +507,7 @@ impl Configuration {
 				io_path: self.directories().db,
 				listen_addr: self.stratum_interface(),
 				port: self.args.flag_ports_shift + self.args.flag_stratum_port,
-				secret: self.args.flag_stratum_secret.as_ref().map(|s| s.parse::<H256>().unwrap_or_else(|_| s.sha3())),
+				secret: self.args.flag_stratum_secret.as_ref().map(|s| s.parse::<H256>().unwrap_or_else(|_| keccak(s))),
 			}))
 		} else { Ok(None) }
 	}
@@ -729,7 +730,7 @@ impl Configuration {
 		ret.listen_address = Some(format!("{}", listen));
 		ret.public_address = public.map(|p| format!("{}", p));
 		ret.use_secret = match self.args.flag_node_key.as_ref()
-			.map(|s| s.parse::<Secret>().or_else(|_| Secret::from_unsafe_slice(&s.sha3())).map_err(|e| format!("Invalid key: {:?}", e))
+			.map(|s| s.parse::<Secret>().or_else(|_| Secret::from_unsafe_slice(&keccak(s))).map_err(|e| format!("Invalid key: {:?}", e))
 			) {
 			None => None,
 			Some(Ok(key)) => Some(key),

parity/main.rs

@@ -70,6 +70,7 @@ extern crate parity_whisper;
 extern crate path;
 extern crate rpc_cli;
 extern crate node_filter;
+extern crate hash;
 
 #[macro_use]
 extern crate log as rlog;
@@ -130,7 +131,7 @@ use std::collections::HashMap;
 use std::io::{self as stdio, BufReader, Read, Write};
 use std::fs::{remove_file, metadata, File, create_dir_all};
 use std::path::PathBuf;
-use util::sha3::sha3;
+use hash::keccak_buffer;
 use cli::Args;
 use configuration::{Cmd, Execute, Configuration};
 use deprecated::find_deprecated;
@@ -140,7 +141,7 @@ use dir::default_hypervisor_path;
 fn print_hash_of(maybe_file: Option<String>) -> Result<String, String> {
 	if let Some(file) = maybe_file {
 		let mut f = BufReader::new(File::open(&file).map_err(|_| "Unable to open file".to_owned())?);
-		let hash = sha3(&mut f).map_err(|_| "Unable to read from file".to_owned())?;
+		let hash = keccak_buffer(&mut f).map_err(|_| "Unable to read from file".to_owned())?;
 		Ok(hash.hex())
 	} else {
 		Err("Streaming from standard input not yet supported. Specify a file.".to_owned())

parity/snapshot.rs

@@ -20,6 +20,7 @@ use std::time::Duration;
 use std::path::{Path, PathBuf};
 use std::sync::Arc;
 
+use hash::keccak;
 use ethcore::snapshot::{Progress, RestorationStatus, SnapshotService as SS};
 use ethcore::snapshot::io::{SnapshotReader, PackedReader, PackedWriter};
 use ethcore::snapshot::service::Service as SnapshotService;
@@ -65,8 +66,6 @@ pub struct SnapshotCommand {
 // helper for reading chunks from arbitrary reader and feeding them into the
 // service.
 fn restore_using<R: SnapshotReader>(snapshot: Arc<SnapshotService>, reader: &R, recover: bool) -> Result<(), String> {
-	use util::sha3::Hashable;
-
 	let manifest = reader.manifest();
 
 	info!("Restoring to block #{} (0x{:?})", manifest.block_number, manifest.block_hash);
@@ -95,7 +94,7 @@ fn restore_using<R: SnapshotReader>(snapshot: Arc<SnapshotService>, reader: &R,
  		let chunk = reader.chunk(state_hash)
 			.map_err(|e| format!("Encountered error while reading chunk {:?}: {}", state_hash, e))?;
 
-		let hash = chunk.sha3();
+		let hash = keccak(&chunk);
 		if hash != state_hash {
 			return Err(format!("Mismatched chunk hash. Expected {:?}, got {:?}", state_hash, hash));
 		}
@@ -112,7 +111,7 @@ fn restore_using<R: SnapshotReader>(snapshot: Arc<SnapshotService>, reader: &R,
  		let chunk = reader.chunk(block_hash)
 			.map_err(|e| format!("Encountered error while reading chunk {:?}: {}", block_hash, e))?;
 
-		let hash = chunk.sha3();
+		let hash = keccak(&chunk);
 		if hash != block_hash {
 			return Err(format!("Mismatched chunk hash. Expected {:?}, got {:?}", block_hash, hash));
 		}

rpc/Cargo.toml

@@ -54,6 +54,7 @@ parity-updater = { path = "../updater" }
 rlp = { path = "../util/rlp" }
 stats = { path = "../util/stats" }
 vm = { path = "../ethcore/vm" }
+hash = { path = "../util/hash" }
 
 clippy = { version = "0.0.103", optional = true}
 pretty_assertions = "0.1"

rpc/src/authcodes.rs

@@ -21,7 +21,8 @@ use std::{fs, time, mem};
 use itertools::Itertools;
 use rand::Rng;
 use rand::os::OsRng;
-use util::{H256, Hashable};
+use hash::keccak;
+use util::H256;
 
 /// Providing current time in seconds
 pub trait TimeProvider {
@@ -162,7 +163,7 @@ impl<T: TimeProvider> AuthCodes<T> {
 			return false;
 		}
 
-		let as_token = |code| format!("{}:{}", code, time).sha3();
+		let as_token = |code| keccak(format!("{}:{}", code, time));
 
 		// Check if it's the initial token.
 		if self.is_empty() {
@@ -231,12 +232,13 @@ mod tests {
 	use std::io::{Read, Write};
 	use std::{time, fs};
 	use std::cell::Cell;
+	use hash::keccak;
 
-	use util::{H256, Hashable};
+	use util::H256;
 	use super::*;
 
 	fn generate_hash(val: &str, time: u64) -> H256 {
-		format!("{}:{}", val, time).sha3()
+		keccak(format!("{}:{}", val, time))
 	}
 
 	#[test]

rpc/src/lib.rs

@@ -60,6 +60,7 @@ extern crate parity_reactor;
 extern crate parity_updater as updater;
 extern crate rlp;
 extern crate stats;
+extern crate hash;
 
 #[macro_use]
 extern crate log;

rpc/src/tests/ws.rs

@@ -56,7 +56,7 @@ pub fn request(server: Server<ws::Server>, request: &str) -> http_client::Respon
 #[cfg(test)]
 mod testing {
 	use std::time;
-	use util::Hashable;
+	use hash::keccak;
 	use devtools::http_client;
 	use super::{serve, request};
 
@@ -125,7 +125,7 @@ mod testing {
 				{{}}
 			",
 			port,
-			format!("{}:{}", code, timestamp).sha3(),
+			keccak(format!("{}:{}", code, timestamp)),
 			timestamp,
 			)
 		);
@@ -155,7 +155,7 @@ mod testing {
 				{{}}
 			",
 			port,
-			format!("{}:{}", code, timestamp).sha3(),
+			keccak(format!("{}:{}", code, timestamp)),
 			timestamp,
 			)
 		);
@@ -171,7 +171,7 @@ mod testing {
 				{{}}
 			",
 			port,
-			format!("{}:{}", code, timestamp).sha3(),
+			keccak(format!("{}:{}", code, timestamp)),
 			timestamp,
 			)
 		);

rpc/src/v1/helpers/dispatch.rs

@@ -26,8 +26,8 @@ use light::client::LightChainClient;
 use light::on_demand::{request, OnDemand};
 use light::TransactionQueue as LightTransactionQueue;
 use rlp;
+use hash::keccak;
 use util::{Address, H520, H256, U256, Bytes, Mutex, RwLock};
-use util::sha3::Hashable;
 use stats::Corpus;
 
 use ethkey::Signature;
@@ -226,7 +226,7 @@ pub fn eth_data_hash(mut data: Bytes) -> H256 {
 		format!("\x19Ethereum Signed Message:\n{}", data.len())
 		.into_bytes();
 	message_data.append(&mut data);
-	message_data.sha3()
+	keccak(message_data)
 }
 
 /// Dispatcher for light clients -- fetches default gas price, next nonce, etc. from network.

rpc/src/v1/impls/eth.rs

@@ -24,7 +24,6 @@ use futures::{self, future, BoxFuture, Future};
 use rlp::{self, UntrustedRlp};
 use time::get_time;
 use util::{H160, H256, Address, U256, H64};
-use util::sha3::Hashable;
 use util::Mutex;
 
 use ethash::SeedHashCompute;
@@ -149,7 +148,7 @@ impl<C, SN: ?Sized, S: ?Sized, M, EM> EthClient<C, SN, S, M, EM> where
 				let view = block.header_view();
 				Ok(Some(RichBlock {
 					inner: Block {
-						hash: Some(view.sha3().into()),
+						hash: Some(view.hash().into()),
 						size: Some(block.rlp().as_raw().len().into()),
 						parent_hash: view.parent_hash().into(),
 						uncles_hash: view.uncles_hash().into(),

rpc/src/v1/impls/light/eth.rs

@@ -38,7 +38,7 @@ use ethcore::filter::Filter as EthcoreFilter;
 use ethcore::transaction::{Action, SignedTransaction, Transaction as EthTransaction};
 use ethsync::LightSync;
 use rlp::UntrustedRlp;
-use util::sha3::{SHA3_NULL_RLP, SHA3_EMPTY_LIST_RLP};
+use hash::{KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP};
 use util::{RwLock, Mutex, U256};
 
 use futures::{future, Future, BoxFuture, IntoFuture};
@@ -295,7 +295,7 @@ impl Eth for EthClient {
 		let (sync, on_demand) = (self.sync.clone(), self.on_demand.clone());
 
 		self.fetcher().header(BlockId::Hash(hash.into())).and_then(move |hdr| {
-			if hdr.transactions_root() == SHA3_NULL_RLP {
+			if hdr.transactions_root() == KECCAK_NULL_RLP {
 				future::ok(Some(U256::from(0).into())).boxed()
 			} else {
 				sync.with_context(|ctx| on_demand.request(ctx, request::Body(hdr.into())))
@@ -311,7 +311,7 @@ impl Eth for EthClient {
 		let (sync, on_demand) = (self.sync.clone(), self.on_demand.clone());
 
 		self.fetcher().header(num.into()).and_then(move |hdr| {
-			if hdr.transactions_root() == SHA3_NULL_RLP {
+			if hdr.transactions_root() == KECCAK_NULL_RLP {
 				future::ok(Some(U256::from(0).into())).boxed()
 			} else {
 				sync.with_context(|ctx| on_demand.request(ctx, request::Body(hdr.into())))
@@ -327,7 +327,7 @@ impl Eth for EthClient {
 		let (sync, on_demand) = (self.sync.clone(), self.on_demand.clone());
 
 		self.fetcher().header(BlockId::Hash(hash.into())).and_then(move |hdr| {
-			if hdr.uncles_hash() == SHA3_EMPTY_LIST_RLP {
+			if hdr.uncles_hash() == KECCAK_EMPTY_LIST_RLP {
 				future::ok(Some(U256::from(0).into())).boxed()
 			} else {
 				sync.with_context(|ctx| on_demand.request(ctx, request::Body(hdr.into())))
@@ -343,7 +343,7 @@ impl Eth for EthClient {
 		let (sync, on_demand) = (self.sync.clone(), self.on_demand.clone());
 
 		self.fetcher().header(num.into()).and_then(move |hdr| {
-			if hdr.uncles_hash() == SHA3_EMPTY_LIST_RLP {
+			if hdr.uncles_hash() == KECCAK_EMPTY_LIST_RLP {
 				future::ok(Some(U256::from(0).into())).boxed()
 			} else {
 				sync.with_context(|ctx| on_demand.request(ctx, request::Body(hdr.into())))

rpc/src/v1/impls/light/parity_set.rs

@@ -23,7 +23,7 @@ use std::sync::Arc;
 use ethsync::ManageNetwork;
 use fetch::Fetch;
 use futures::{BoxFuture, Future};
-use util::sha3;
+use hash::keccak_buffer;
 
 use jsonrpc_core::Error;
 use v1::helpers::dapps::DappsService;
@@ -129,7 +129,7 @@ impl<F: Fetch> ParitySet for ParitySetClient<F> {
 			result
 				.map_err(errors::fetch)
 				.and_then(|response| {
-					sha3(&mut io::BufReader::new(response)).map_err(errors::fetch)
+					keccak_buffer(&mut io::BufReader::new(response)).map_err(errors::fetch)
 				})
 				.map(Into::into)
 		}))

rpc/src/v1/impls/parity_set.rs

@@ -24,7 +24,7 @@ use ethcore::mode::Mode;
 use ethsync::ManageNetwork;
 use fetch::{self, Fetch};
 use futures::{BoxFuture, Future};
-use util::sha3;
+use hash::keccak_buffer;
 use updater::{Service as UpdateService};
 
 use jsonrpc_core::Error;
@@ -170,7 +170,7 @@ impl<C, M, U, F> ParitySet for ParitySetClient<C, M, U, F> where
 			result
 				.map_err(errors::fetch)
 				.and_then(|response| {
-					sha3(&mut io::BufReader::new(response)).map_err(errors::fetch)
+					keccak_buffer(&mut io::BufReader::new(response)).map_err(errors::fetch)
 				})
 				.map(Into::into)
 		}))

rpc/src/v1/impls/web3.rs

@@ -15,11 +15,11 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Web3 rpc implementation.
+use hash::keccak;
 use jsonrpc_core::*;
 use util::version;
 use v1::traits::Web3;
 use v1::types::{H256, Bytes};
-use util::sha3::Hashable;
 
 /// Web3 rpc implementation.
 pub struct Web3Client;
@@ -35,6 +35,6 @@ impl Web3 for Web3Client {
 	}
 
 	fn sha3(&self, data: Bytes) -> Result<H256, Error> {
-		Ok(data.0.sha3().into())
+		Ok(keccak(&data.0).into())
 	}
 }

rpc/src/v1/tests/eth.rs

@@ -29,7 +29,7 @@ use ethcore::miner::{MinerOptions, Banning, GasPricer, MinerService, ExternalMin
 use ethcore::account_provider::AccountProvider;
 use ethjson::blockchain::BlockChain;
 use io::IoChannel;
-use util::{U256, H256, Address, Hashable};
+use util::{U256, H256, Address};
 
 use jsonrpc_core::IoHandler;
 use v1::impls::{EthClient, SigningUnsafeClient};
@@ -431,7 +431,7 @@ fn verify_transaction_counts(name: String, chain: BlockChain) {
 	for b in chain.blocks_rlp().iter().filter(|b| Block::is_good(b)).map(|b| BlockView::new(b)) {
 		let count = b.transactions_count();
 
-		let hash = b.sha3();
+		let hash = b.hash();
 		let number = b.header_view().number();
 
 		let (req, res) = by_hash(hash, count, &mut id);

rpc_client/Cargo.toml

@@ -19,3 +19,4 @@ jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "pa
 jsonrpc-ws-server = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.7" }
 parity-rpc = { path = "../rpc" }
 ethcore-util = { path = "../util" }
+hash = { path = "../util/hash" }

rpc_client/src/client.rs

@@ -9,7 +9,8 @@ use std::thread;
 use std::time;
 
 use std::path::PathBuf;
-use util::{Hashable, Mutex};
+use hash::keccak;
+use util::Mutex;
 use url::Url;
 use std::fs::File;
 
@@ -72,7 +73,7 @@ impl Handler for RpcHandler {
 					WsError::new(WsErrorKind::Internal, format!("{}", err))
 				})?;
 				let secs = timestamp.as_secs();
-				let hashed = format!("{}:{}", self.auth_code, secs).sha3();
+				let hashed = keccak(format!("{}:{}", self.auth_code, secs));
 				let proto = format!("{:?}_{}", hashed, secs);
 				r.add_protocol(&proto);
 				Ok(r)

rpc_client/src/lib.rs

@@ -11,6 +11,7 @@ extern crate serde;
 extern crate serde_json;
 extern crate tempdir;
 extern crate url;
+extern crate hash;
 
 #[macro_use]
 extern crate log;

secret_store/Cargo.toml

@@ -29,6 +29,7 @@ ethabi = "2.0"
 ethcore = { path = "../ethcore" }
 ethcore-devtools = { path = "../devtools" }
 ethcore-util = { path = "../util" }
+hash = { path = "../util/hash" }
 ethcore-ipc = { path = "../ipc/rpc" }
 ethcore-ipc-nano = { path = "../ipc/nano" }
 ethcore-logger = { path = "../logger" }

secret_store/src/key_server_cluster/math.rs

@@ -15,7 +15,8 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use ethkey::{Public, Secret, Random, Generator, math};
-use util::{U256, H256, Hashable};
+use util::{U256, H256};
+use hash::keccak;
 use key_server_cluster::Error;
 
 #[derive(Debug)]
@@ -306,7 +307,7 @@ pub fn combine_message_hash_with_public(message_hash: &H256, public: &Public) ->
 	buffer[32..64].copy_from_slice(&public[0..32]);
 
 	// calculate hash of buffer
-	let hash = (&buffer[..]).sha3();
+	let hash = keccak(&buffer[..]);
 
 	// map hash to EC finite field value
 	let hash: U256 = hash.into();