{ "contractName": "RSASHA1Algorithm", "abi": [ { "inputs": [ { "internalType": "bytes", "name": "key", "type": "bytes" }, { "internalType": "bytes", "name": "data", "type": "bytes" }, { "internalType": "bytes", "name": "sig", "type": "bytes" } ], "name": "verify", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.7.4+commit.3f05b770\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"bytes\",\"name\":\"key\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"},{\"internalType\":\"bytes\",\"name\":\"sig\",\"type\":\"bytes\"}],\"name\":\"verify\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Implements the DNSSEC RSASHA1 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"source": "pragma solidity ^0.7.4;\n\nimport \"./Algorithm.sol\";\nimport \"../BytesUtils.sol\";\nimport \"./RSAVerify.sol\";\nimport \"@ensdomains/solsha1/contracts/SHA1.sol\";\n\n/**\n* @dev Implements the DNSSEC RSASHA1 algorithm.\n*/\ncontract RSASHA1Algorithm is Algorithm {\n using BytesUtils for *;\n\n function verify(bytes calldata key, bytes calldata data, bytes calldata sig) external override view returns (bool) {\n bytes memory exponent;\n bytes memory modulus;\n\n uint16 exponentLen = uint16(key.readUint8(4));\n if (exponentLen != 0) {\n exponent = key.substring(5, exponentLen);\n modulus = key.substring(exponentLen + 5, key.length - exponentLen - 5);\n } else {\n exponentLen = key.readUint16(5);\n exponent = key.substring(7, exponentLen);\n modulus = key.substring(exponentLen + 7, key.length - exponentLen - 7);\n }\n\n // Recover the message from the signature\n bool ok;\n bytes memory result;\n (ok, result) = RSAVerify.rsarecover(modulus, exponent, sig);\n\n // Verify it ends with the hash of our data\n return ok && SHA1.sha1(data) == result.readBytes20(result.length - 20);\n }\n}\n", "sourcePath": "/home/arachnid/Dropbox/projects/enssec/contracts/algorithms/RSASHA1Algorithm.sol", "ast": { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/algorithms/RSASHA1Algorithm.sol", "exportedSymbols": { "Algorithm": [ 3863 ], "Buffer": [ 6432 ], "BytesUtils": [ 730 ], "ModexpPrecompile": [ 5348 ], "RSASHA1Algorithm": [ 5570 ], "RSAVerify": [ 5727 ], "SHA1": [ 6448 ] }, "id": 5571, "nodeType": "SourceUnit", "nodes": [ { "id": 5440, "literals": [ "solidity", "^", "0.7", ".4" ], "nodeType": "PragmaDirective", "src": "0:23:11" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/algorithms/Algorithm.sol", "file": "./Algorithm.sol", "id": 5441, "nodeType": "ImportDirective", "scope": 5571, "sourceUnit": 3864, "src": "25:25:11", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/BytesUtils.sol", "file": "../BytesUtils.sol", "id": 5442, "nodeType": "ImportDirective", "scope": 5571, "sourceUnit": 731, "src": "51:27:11", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/arachnid/Dropbox/projects/enssec/contracts/algorithms/RSAVerify.sol", "file": "./RSAVerify.sol", "id": 5443, "nodeType": "ImportDirective", "scope": 5571, "sourceUnit": 5728, "src": "79:25:11", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@ensdomains/solsha1/contracts/SHA1.sol", "file": "@ensdomains/solsha1/contracts/SHA1.sol", "id": 5444, "nodeType": "ImportDirective", "scope": 5571, "sourceUnit": 6449, "src": "105:48:11", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 5446, "name": "Algorithm", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3863, "src": "239:9:11", "typeDescriptions": { "typeIdentifier": "t_contract$_Algorithm_$3863", "typeString": 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