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authorJacob Evans <jacob@dekz.net>2018-06-19 11:30:13 +0800
committerJacob Evans <jacob@dekz.net>2018-06-19 15:32:17 +0800
commit560a55bfd1a05bda0d4fb4b97d76e9ea0d9301a7 (patch)
treedb144ad73789e2e8196a377507e9f38690c64d2f /packages/contracts/src
parent190eafc30e2e444ed15b76217a6162ec04b33f73 (diff)
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Optimize and remove redundant encodePacked
Diffstat (limited to 'packages/contracts/src')
-rw-r--r--packages/contracts/src/contracts/current/protocol/Exchange/MixinTransactions.sol8
-rw-r--r--packages/contracts/src/contracts/current/protocol/Exchange/libs/LibEIP712.sol19
-rw-r--r--packages/contracts/src/contracts/current/protocol/Exchange/libs/LibOrder.sol6
-rw-r--r--packages/contracts/src/utils/transaction_factory.ts3
4 files changed, 23 insertions, 13 deletions
diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/contracts/current/protocol/Exchange/MixinTransactions.sol
index 9bdaa0f8f..f1332363c 100644
--- a/packages/contracts/src/contracts/current/protocol/Exchange/MixinTransactions.sol
+++ b/packages/contracts/src/contracts/current/protocol/Exchange/MixinTransactions.sol
@@ -53,14 +53,14 @@ contract MixinTransactions is
/// @return EIP712 hash of the Transaction.
function hashZeroExTransaction(uint256 salt, address signer, bytes data)
internal
- view
+ pure
returns (bytes32)
{
- return keccak256(abi.encodePacked(
+ return keccak256(abi.encode(
EIP712_ZEROEX_TRANSACTION_SCHEMA_HASH,
salt,
- bytes32(signer),
- keccak256(abi.encodePacked(data))
+ signer,
+ keccak256(data)
));
}
diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibEIP712.sol b/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibEIP712.sol
index 991137f32..b983347a4 100644
--- a/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibEIP712.sol
+++ b/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibEIP712.sol
@@ -22,6 +22,12 @@ contract LibEIP712 {
// EIP191 header for EIP712 prefix
string constant EIP191_HEADER = "\x19\x01";
+ // EIP712 Domain Name value
+ string constant EIP712_DOMAIN_NAME = "0x Protocol";
+
+ // EIP712 Domain Version value
+ string constant EIP712_DOMAIN_VERSION = "2";
+
// Hash of the EIP712 Domain Separator Schema
bytes32 public constant EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH = keccak256(abi.encodePacked(
"EIP712Domain(",
@@ -35,16 +41,19 @@ contract LibEIP712 {
bytes32 public EIP712_DOMAIN_HASH;
constructor ()
- public
+ public
{
- EIP712_DOMAIN_HASH = keccak256(abi.encodePacked(
+ EIP712_DOMAIN_HASH = keccak256(abi.encode(
EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH,
- keccak256(abi.encodePacked("0x Protocol")),
- keccak256(abi.encodePacked("2")),
- bytes32(address(this))
+ keccak256(bytes(EIP712_DOMAIN_NAME)),
+ keccak256(bytes(EIP712_DOMAIN_VERSION)),
+ address(this)
));
}
+ /// @dev Calculates EIP712 encoding for a hash struct in this EIP712 Domain.
+ /// @param hashStruct The EIP712 hash struct.
+ /// @return EIP712 hash applied to this EIP712 Domain.
function hashEIP712Message(bytes32 hashStruct)
internal
view
diff --git a/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibOrder.sol b/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibOrder.sol
index 04374f1d0..b21de6927 100644
--- a/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibOrder.sol
+++ b/packages/contracts/src/contracts/current/protocol/Exchange/libs/LibOrder.sol
@@ -99,6 +99,8 @@ contract LibOrder is
pure
returns (bytes32)
{
+ // Note: changing this to abi.encode results in an error on 0.4.24
+ // UnimplementedFeatureError: Variable inaccessible, too deep inside stack (17)
return keccak256(abi.encodePacked(
EIP712_ORDER_SCHEMA_HASH,
bytes32(order.makerAddress),
@@ -111,8 +113,8 @@ contract LibOrder is
order.takerFee,
order.expirationTimeSeconds,
order.salt,
- keccak256(abi.encodePacked(order.makerAssetData)),
- keccak256(abi.encodePacked(order.takerAssetData))
+ keccak256(order.makerAssetData),
+ keccak256(order.takerAssetData)
));
}
}
diff --git a/packages/contracts/src/utils/transaction_factory.ts b/packages/contracts/src/utils/transaction_factory.ts
index c0a32b83a..19ef4e1bf 100644
--- a/packages/contracts/src/utils/transaction_factory.ts
+++ b/packages/contracts/src/utils/transaction_factory.ts
@@ -1,4 +1,4 @@
-import { crypto, EIP712Schema, EIP712Types, EIP712Utils, generatePseudoRandomSalt } from '@0xproject/order-utils';
+import { EIP712Schema, EIP712Types, EIP712Utils, generatePseudoRandomSalt } from '@0xproject/order-utils';
import { SignatureType } from '@0xproject/types';
import * as ethUtil from 'ethereumjs-util';
@@ -24,7 +24,6 @@ export class TransactionFactory {
this._signerBuff = ethUtil.privateToAddress(this._privateKey);
}
public newSignedTransaction(data: string, signatureType: SignatureType = SignatureType.EthSign): SignedTransaction {
- const executeTransactionSchemaHashBuff = EIP712Utils.compileSchema(EIP712_ZEROEX_TRANSACTION_SCHEMA);
const salt = generatePseudoRandomSalt();
const signer = `0x${this._signerBuff.toString('hex')}`;
const executeTransactionData = {