status-im
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payment-network-apps
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use ECDSA utils from OpenZeppelin

This commit is contained in:
Michele Balistreri 2020-09-29 08:47:58 +02:00
parent a1e7b666fa
commit 245a4626ee
No known key found for this signature in database
GPG Key ID: E9567DA33A4F791A
3 changed files with 7 additions and 25 deletions
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22
status-pay/contracts/EVMUtils.sol
View File

@ -12,28 +12,6 @@ library EVMUtils {
));
}
function recoverSigner(bytes32 _digest, bytes memory _sig) internal pure returns (address) {
require(_sig.length == 65, "bad signature length");
bytes32 r;
bytes32 s;
uint8 v;
// solium-disable-next-line security/no-inline-assembly
assembly {
r := mload(add(_sig, 32))
s := mload(add(_sig, 64))
v := byte(0, mload(add(_sig, 96)))
}
if (v < 27) {
v += 27;
}
require(v == 27 || v == 28, "signature version doesn't match");
return ecrecover(_digest, v, r, s);
}
function getChainID() internal pure returns (uint256) {
uint256 id;
assembly {

6
status-pay/contracts/StatusPay.sol
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@ -3,6 +3,8 @@ pragma solidity >=0.5.0 <0.7.0;
pragma experimental ABIEncoderV2;
import "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts-ethereum-package/contracts/cryptography/ECDSA.sol";
import "./IBlockRelay.sol";
import "./BlockConsumer.sol";
import "./EVMUtils.sol";
@ -154,7 +156,7 @@ contract StatusPay is BlockConsumer {
function unlockAccount(Unlock memory _unlock, bytes memory _signature) public {
require(owners[msg.sender] == address(0), "this owner already has an account");
address signer = EVMUtils.recoverSigner(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashUnlock(_unlock)), _signature);
address signer = ECDSA.recover(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashUnlock(_unlock)), _signature);
address accountAddress = keycards[signer];
validateAnchorBlock(_unlock.blockNumber, _unlock.blockHash, maxTxDelayInBlocks);
@ -171,7 +173,7 @@ contract StatusPay is BlockConsumer {
}
function requestPayment(Payment memory _payment, bytes memory _signature) public {
address signer = EVMUtils.recoverSigner(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashPayment(_payment)), _signature);
address signer = ECDSA.recover(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashPayment(_payment)), _signature);
Account storage payer = accounts[keycards[signer]];
// allow direct payment without Keycard from owner

4
status-pay/contracts/StatusPayBucket.sol
View File

@ -3,6 +3,8 @@ pragma solidity >=0.5.0 <0.7.0;
pragma experimental ABIEncoderV2;
import "@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts-ethereum-package/contracts/cryptography/ECDSA.sol";
import "./StatusPay.sol";
import "./IBlockRelay.sol";
import "./BlockConsumer.sol";
@ -76,7 +78,7 @@ contract StatusPayBucket is BlockConsumer {
require(blockTimestamp() < expirationTime, "expired redeemable");
require(blockTimestamp() > startTime, "reedeming not yet started");
address recipient = EVMUtils.recoverSigner(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashRedeem(_redeem)), _sig);
address recipient = ECDSA.recover(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashRedeem(_redeem)), _sig);
Redeemable storage redeemable = redeemables[recipient];
require(redeemable.recipient == recipient, "not found");