2185 lines
89 KiB
JSON
2185 lines
89 KiB
JSON
{
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"contractName": "ECRecovery",
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"abi": [],
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"bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f30073000000000000000000000000000000000000000030146080604052600080fd00a165627a7a7230582095f4276bbe910450a81a9f24c9666db9e203894c52a3fdbade54b3b5738e695e0029",
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"deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fd00a165627a7a7230582095f4276bbe910450a81a9f24c9666db9e203894c52a3fdbade54b3b5738e695e0029",
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"sourceMap": "309:1640:1:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24",
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"deployedSourceMap": "309:1640:1:-;;;;;;;;",
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"source": "pragma solidity ^0.4.21;\n\n\n/**\n * @title Eliptic curve signature operations\n *\n * @dev Based on https://gist.github.com/axic/5b33912c6f61ae6fd96d6c4a47afde6d\n *\n * TODO Remove this library once solidity supports passing a signature to ecrecover.\n * See https://github.com/ethereum/solidity/issues/864\n *\n */\n\nlibrary ECRecovery {\n\n /**\n * @dev Recover signer address from a message by using their signature\n * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.\n * @param sig bytes signature, the signature is generated using web3.eth.sign()\n */\n function recover(bytes32 hash, bytes sig)\n internal\n pure\n returns (address)\n {\n bytes32 r;\n bytes32 s;\n uint8 v;\n\n // Check the signature length\n if (sig.length != 65) {\n return (address(0));\n }\n\n // Divide the signature in r, s and v variables\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n // solium-disable-next-line security/no-inline-assembly\n assembly {\n r := mload(add(sig, 32))\n s := mload(add(sig, 64))\n v := byte(0, mload(add(sig, 96)))\n }\n\n // Version of signature should be 27 or 28, but 0 and 1 are also possible versions\n if (v < 27) {\n v += 27;\n }\n\n // If the version is correct return the signer address\n if (v != 27 && v != 28) {\n return (address(0));\n } else {\n // solium-disable-next-line arg-overflow\n return ecrecover(hash, v, r, s);\n }\n }\n\n /**\n * toEthSignedMessageHash\n * @dev prefix a bytes32 value with \"\\x19Ethereum Signed Message:\"\n * @dev and hash the result\n */\n function toEthSignedMessageHash(bytes32 hash)\n internal\n pure\n returns (bytes32)\n {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(\n \"\\x19Ethereum Signed Message:\\n32\",\n hash\n );\n }\n}\n",
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"sourcePath": "/home/spalladino/Projects/openzeppelin-zos/contracts/ECRecovery.sol",
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"ast": {
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"absolutePath": "/home/spalladino/Projects/openzeppelin-zos/contracts/ECRecovery.sol",
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"exportedSymbols": {
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"ECRecovery": [
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96
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]
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},
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"id": 97,
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"documentation": "@title Eliptic curve signature operations\n * @dev Based on https://gist.github.com/axic/5b33912c6f61ae6fd96d6c4a47afde6d\n * TODO Remove this library once solidity supports passing a signature to ecrecover.\nSee https://github.com/ethereum/solidity/issues/864\n ",
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