{ "contractName": "ECDSA", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"/Users/gabriel/Documents/iexec/poco-boost/iexec-solidity/contracts/Libs/ECDSA.sol\":\"ECDSA\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/Users/gabriel/Documents/iexec/poco-boost/iexec-solidity/contracts/Libs/ECDSA.sol\":{\"keccak256\":\"0x5b5cab32903d3f29bd376fe79769d2caf165515a1d42cf0b5146bdc3c15db984\",\"license\":\"Apache-2.0\",\"urls\":[\"bzz-raw://6196d2aabeb6a8debf733e4f9b493b5ceb382f6ea66f63f8ea18be01edbe0778\",\"dweb:/ipfs/QmbjRJBEphjnJctoq7aeSRygxhxwDySqLqerY5AfLQHB4m\"]}},\"version\":1}", "bytecode": "0x6080604052348015600f57600080fd5b50603f80601d6000396000f3fe6080604052600080fdfea26469706673582212200f9ea7e415b9dc0456d1546f2a9ed12ff82959ea6e4ac919cbe02270d8ab76a064736f6c634300060c0033", "deployedBytecode": "0x6080604052600080fdfea26469706673582212200f9ea7e415b9dc0456d1546f2a9ed12ff82959ea6e4ac919cbe02270d8ab76a064736f6c634300060c0033", "immutableReferences": {}, "sourceMap": "1301:1421:20:-:0;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "1301:1421:20:-:0;;;;;", "source": "// SPDX-License-Identifier: Apache-2.0\n\n/******************************************************************************\n * Copyright 2020 IEXEC BLOCKCHAIN TECH *\n * *\n * Licensed under the Apache License, Version 2.0 (the \"License\"); *\n * you may not use this file except in compliance with the License. *\n * You may obtain a copy of the License at *\n * *\n * http://www.apache.org/licenses/LICENSE-2.0 *\n * *\n * Unless required by applicable law or agreed to in writing, software *\n * distributed under the License is distributed on an \"AS IS\" BASIS, *\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *\n * See the License for the specific language governing permissions and *\n * limitations under the License. *\n ******************************************************************************/\n\npragma solidity ^0.6.0;\npragma experimental ABIEncoderV2;\n\ncontract ECDSA\n{\n\tstruct signature\n\t{\n\t\tuint8 v;\n\t\tbytes32 r;\n\t\tbytes32 s;\n\t}\n\n\tfunction recover(bytes32 hash, signature memory sign)\n\tinternal pure returns (address)\n\t{\n\t\trequire(sign.v == 27 || sign.v == 28);\n\t\treturn ecrecover(hash, sign.v, sign.r, sign.s);\n\t}\n\n\tfunction recover(bytes32 hash, bytes memory sign)\n\tinternal pure returns (address)\n\t{\n\t\tbytes32 r;\n\t\tbytes32 s;\n\t\tuint8 v;\n\n\t\tif (sign.length == 65) // 65bytes: (r,s,v) form\n\t\t{\n\t\t\tassembly\n\t\t\t{\n\t\t\t\tr := mload(add(sign, 0x20))\n\t\t\t\ts := mload(add(sign, 0x40))\n\t\t\t\tv := byte(0, mload(add(sign, 0x60)))\n\t\t\t}\n\t\t}\n\t\telse if (sign.length == 64) // 64bytes: (r,vs) form → see EIP2098\n\t\t{\n\t\t\tassembly\n\t\t\t{\n\t\t\t\tr := mload(add(sign, 0x20))\n\t\t\t\ts := and( mload(add(sign, 0x40)), 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)\n\t\t\t\tv := shr(7, byte(0, mload(add(sign, 0x40))))\n\t\t\t}\n\t\t}\n\t\telse\n\t\t{\n\t\t\trevert(\"invalid-signature-format\");\n\t\t}\n\n\t\tif (v < 27) v += 27;\n\t\trequire(v == 27 || v == 28);\n\t\treturn ecrecover(hash, v, r, s);\n\t}\n\n\tfunction toEthSignedMessageHash(bytes32 hash)\n\tinternal pure returns (bytes32)\n\t{\n\t\treturn keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n\t}\n\n\tfunction toEthTypedStructHash(bytes32 struct_hash, bytes32 domain_separator)\n\tinternal pure returns (bytes32)\n\t{\n\t\treturn keccak256(abi.encodePacked(\"\\x19\\x01\", domain_separator, struct_hash));\n\t}\n}\n", "sourcePath": 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