{ "contractName": "SignatureVerifier", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.6+commit.6c089d02\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"methods\":{\"owner()\":{\"details\":\"Returns the address of the current owner.\"},\"renounceOwnership()\":{\"details\":\"Leaves the contract without owner. It will not be possible to call `onlyOwner` functions anymore. Can only be called by the current owner. * NOTE: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.\"},\"transferOwnership(address)\":{\"details\":\"Transfers ownership of the contract to a new account (`newOwner`). Can only be called by the current owner.\"}}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/modules/delegates/SignatureVerifier.sol\":\"SignatureVerifier\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/Store.sol\":{\"keccak256\":\"0x9e49d21b9e009a5b6e7a800ba71973a7e4ff96d5e806d67abaf9c2e8b6652532\",\"urls\":[\"bzz-raw://680a708e1a537b0ca413ac8342ea5e55c2c02ff5dd6d752d085739122955f1c6\",\"dweb:/ipfs/QmUcYhmJSrsNRsvo3W4ZB6DH6YFJHLvg6uLmropgGLTRhh\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/libs/IexecLibCore_v5.sol\":{\"keccak256\":\"0x2ab8fa750e4d0832afc0b04686e46f020bfe115e5be29b2301f41f97509e2a6f\",\"urls\":[\"bzz-raw://750c1e0aebc8cfd8197561d412d6ae77558362845c3195ac59651139e21bbc7f\",\"dweb:/ipfs/QmPimAbBDdB2Yuw5PuWVQ9qa3BUz4Psrav2Y75Vh3Hmmrr\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/libs/IexecLibOrders_v5.sol\":{\"keccak256\":\"0xf2fece8edb03040a06bc18ff9a7354a57c1762c7fd8e5c353e696dd38b7a2693\",\"urls\":[\"bzz-raw://b758832e3a0c3d168ce75cf9569d78104f90afda4d0d2aca80a6612860c49c66\",\"dweb:/ipfs/QmPdteQJsejwYs8Vq4zAKfLUjSECcrRmS1sT3uotFWXpdZ\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/modules/DelegateBase.sol\":{\"keccak256\":\"0x465d3c959887af4a95487e7b0d8e7e579561ee1c5706957836e0b44698bad697\",\"urls\":[\"bzz-raw://61bc27189149a15383a3e4ff3ff4e10f395065949087eb77834e5f5effaea1d8\",\"dweb:/ipfs/QmesUKUoQ5dSRPKjnb2PYNgYPvBHoKvDvhehr9PPa3uawT\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/modules/delegates/SignatureVerifier.sol\":{\"keccak256\":\"0x07290b9fa344722d1d6c488b60c01e9c5f797d197f90b5e46417ecc51d06e454\",\"urls\":[\"bzz-raw://e8243a0a4f80b271facddb70049160baf68478da417e4d2de46f6449dc6b13a3\",\"dweb:/ipfs/QmSgFHuYiDP7nBa6Vot1xP4Vtqzy36Ntkkv9ugHw2SbnW2\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/IRegistry.sol\":{\"keccak256\":\"0x22cd93dce3ec7f424ca689cdd4d5aa6a7d0d5ff81133c8530c5397f206100b84\",\"urls\":[\"bzz-raw://3a12bb04edc05201d7b0f00d7a401152daaa0ee2fd794a848fd760290edcfffa\",\"dweb:/ipfs/QmXYRdrHLLcutF1JLcKSKiCRMxo5X4713BfXFYM4gzrXWc\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/Registry.sol\":{\"keccak256\":\"0xdf594884fc674966628ebbb2b88bc470c89881fdad988812c815bf371ce8b387\",\"urls\":[\"bzz-raw://2386446324af596f08c0a09a2a9047a1d24187ae19c6d07ad727dfa72ff597c9\",\"dweb:/ipfs/QmYmN8jTjiLmcEKXxFPCouubca8AU92agFt4zMeNpkiLey\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/RegistryEntry.sol\":{\"keccak256\":\"0xc5b8b64b19a7f26bdeda8dce637b65c16388adfdc6a77e02455c74722908ed8b\",\"urls\":[\"bzz-raw://a25ccdaeff6f497a58b6b5fda0f82a53243e51be2f59a8ebd4f3f294a95c9f03\",\"dweb:/ipfs/QmWNqwVbTmdVjYYuEaG32HR8P2fDWbTD6YDGX2B623976a\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/apps/App.sol\":{\"keccak256\":\"0x2fda8eaa946a91bec7b6a6e8b6e39d59dfbf02da48a3390924ccddf6c878765e\",\"urls\":[\"bzz-raw://3f0be3037a792a5feaa5c82185e8c1098f3ceeca14c8f7c733b3a79262da9680\",\"dweb:/ipfs/QmdStYN91aJSXz52YeYRczjaxmEpYoFHZjRd2Rktzu1SEN\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/datasets/Dataset.sol\":{\"keccak256\":\"0x343c0cb970203c54630853190b6535f7170e9e3d32371fb30950c0b73140fb47\",\"urls\":[\"bzz-raw://7ffd18cda40275e7de235d1aa1166410a8e377ef9f1872fa50f58b1053391e03\",\"dweb:/ipfs/QmUkg99KkPyi5DKZNSbyCm9Lw2GMPQW2r7jJkywg4SSqnF\"]},\"/home/amxx/Work/iExec/code/PoCo-dev/contracts/registries/workerpools/Workerpool.sol\":{\"keccak256\":\"0xba54886c81794791a38e974d2b24f0789ad21b2a55a0b65abb63596b4e19d888\",\"urls\":[\"bzz-raw://cc6da6f555b9618d54b5a952ebed60fdd469f26dd938adb3d29fe3c1564465f5\",\"dweb:/ipfs/QmbAKdBrNrjF8YGgWL7LtLhRUH2nwpgD1KBiNE6Xd7Cn4q\"]},\"@ensdomains/ens/contracts/ENS.sol\":{\"keccak256\":\"0x10b88673d8c180cd62523be4fec7607c65594eb4f0c561fa0fbc0784422b4871\",\"urls\":[\"bzz-raw://b3de1882a4a1a1b13c27ee6dc04cc58c34ac392c80cad507de2cdfa8c02712fe\",\"dweb:/ipfs/QmeKcaBF8QdJjXiqFrPJkAtK3et5kUL8XJrnHjwhAThRMT\"]},\"@iexec/interface/contracts/IexecClerk.sol\":{\"keccak256\":\"0x703252a638a5a7e2b600395fd920712a1ac259018bc9578fe581a77fa2f008a9\",\"urls\":[\"bzz-raw://072b9e948e5ac4a7f60466c23b322ea0f1aca711f1a94616e658600c2a4c36a2\",\"dweb:/ipfs/QmRP57bkhWDr5BeawfjiKsbdwFiHnw6nc6zgiEad3hQoSJ\"]},\"@iexec/interface/contracts/IexecHub.sol\":{\"keccak256\":\"0x8e293b7624550823838ed9113400544c5980afac1043ddacad7a862c91b0840d\",\"urls\":[\"bzz-raw://ae34ebc355838595ee69b24a31e60deb186455cc388c88de7ecd0294c7037075\",\"dweb:/ipfs/QmUYVQJBWG7ohAYksJRDJKcJVyPMXNFJSPWMAuQcGfWHo7\"]},\"@iexec/interface/contracts/IexecRegistries.sol\":{\"keccak256\":\"0xb39eef47d62d8751c5adfeaf169ce57b50c480788be8356289bc28b78bc24fde\",\"urls\":[\"bzz-raw://a86593f1ef9953ac0965aab4e764374580a899a7f7871ad66b432523171063a1\",\"dweb:/ipfs/QmcYZhHD45APoS1Ebi416DhXU3fiCzoFW2WSMux4AxhFqk\"]},\"@iexec/interface/contracts/li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"source": "pragma solidity ^0.6.0;\npragma experimental ABIEncoderV2;\n\nimport \"@iexec/solidity/contracts/ERC734/IERC734.sol\";\nimport \"@iexec/solidity/contracts/ERC1271/IERC1271.sol\";\nimport \"@iexec/solidity/contracts/ERC1654/IERC1654.sol\";\nimport \"../DelegateBase.sol\";\n\n\ncontract SignatureVerifier is DelegateBase\n{\n\t/**\n\t * Prepare message/structure predicat used for signing\n\t */\n\tfunction _toEthSignedMessage(bytes32 _msgHash)\n\tinternal pure returns (bytes memory)\n\t{\n\t\treturn abi.encodePacked('\\x19Ethereum Signed Message:\\n32', _msgHash);\n\t}\n\n\tfunction _toEthTypedStruct(bytes32 _structHash, bytes32 _domainHash)\n\tinternal pure returns (bytes memory)\n\t{\n\t\treturn abi.encodePacked('\\x19\\x01', _domainHash, _structHash);\n\t}\n\n\t/**\n\t * recover EOA signature (support both 65 bytes traditional and 64 bytes format EIP2098 format)\n\t */\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, 'invalid-signature-v');\n\t\treturn ecrecover(_hash, v, r, s);\n\t}\n\n\t/**\n\t * Check if contract exist, otherwize assumed to be EOA\n\t */\n\tfunction _isContract(address account)\n\tinternal view returns (bool)\n\t{\n\t\t// According to EIP-1052, 0x0 is the value returned for not-yet created accounts\n\t\t// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned\n\t\t// for accounts without code, i.e. `keccak256('')`\n\t\tbytes32 codehash;\n\t\tbytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;\n\t\t// solhint-disable-next-line no-inline-assembly\n\t\tassembly { codehash := extcodehash(account) }\n\t\treturn (codehash != accountHash && codehash != 0x0);\n\t}\n\n\t/**\n\t * Address to bytes32 casting to ERC734\n\t */\n\tfunction _addrToKey(address _addr)\n\tinternal pure returns (bytes32)\n\t{\n\t\treturn bytes32(uint256(_addr));\n\t}\n\n\t/**\n\t * Identity verification\n\t */\n\tfunction _checkIdentity(address _identity, address _candidate, uint256 _purpose)\n\tinternal view returns (bool valid)\n\t{\n\t\treturn _identity == _candidate || IERC734(_identity).keyHasPurpose(_addrToKey(_candidate), _purpose); // Simple address || ERC 734 identity contract\n\t}\n\n\tfunction _checkPresignature(address _identity, bytes32 _hash)\n\tinternal view returns (bool)\n\t{\n\t\treturn _identity != address(0) && _identity == m_presigned[_hash];\n\t}\n\n\tfunction _checkSignature(address _identity, bytes32 _hash, bytes memory _signature)\n\tinternal view returns (bool)\n\t{\n\t\tif (_isContract(_identity))\n\t\t{\n\t\t\ttry IERC1654(_identity).isValidSignature(_hash, _signature) returns (bytes4 value)\n\t\t\t{\n\t\t\t\treturn value == IERC1654(0).isValidSignature.selector;\n\t\t\t} catch (bytes memory /*lowLevelData*/) {}\n\n\t\t\treturn false;\n\t\t}\n\t\telse\n\t\t{\n\t\t\treturn _recover(_hash, _signature) == _identity;\n\t\t}\n\t}\n\n\tfunction _checkSignature(address _identity, bytes memory _predicat, bytes memory _signature)\n\tinternal view returns (bool)\n\t{\n\t\tif (_isContract(_identity))\n\t\t{\n\t\t\ttry IERC1271(_identity).isValidSignature(_predicat, _signature) returns (bytes4 value)\n\t\t\t{\n\t\t\t\treturn value == IERC1271(0).isValidSignature.selector;\n\t\t\t}\n\t\t\tcatch (bytes memory /*lowLevelData*/) {}\n\n\t\t\ttry IERC1654(_identity).isValidSignature(keccak256(_predicat), _signature) returns (bytes4 value)\n\t\t\t{\n\t\t\t\treturn value == IERC1654(0).isValidSignature.selector;\n\t\t\t}\n\t\t\tcatch (bytes memory /*lowLevelData*/) {}\n\n\t\t\treturn false;\n\t\t}\n\t\telse\n\t\t{\n\t\t\treturn _recover(keccak256(_predicat), _signature) == _identity;\n\t\t}\n\t}\n\n\tfunction _checkPresignatureOrSignature(address _identity, bytes32 _hash, bytes memory _signature)\n\tinternal view returns (bool)\n\t{\n\t\treturn _checkPresignature(_identity, _hash) || _checkSignature(_identity, _hash, _signature);\n\t}\n\n\tfunction _checkPresignatureOrSignature(address _identity, bytes memory _predicat, bytes memory _signature)\n\tinternal view returns (bool)\n\t{\n\t\treturn _checkPresignature(_identity, keccak256(_predicat)) || _checkSignature(_identity, _predicat, _signature);\n\t}\n}\n", "sourcePath": 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