{ "contractName": "RSASHA1Algorithm", "abi": [ { "constant": true, "inputs": [ { "name": "key", "type": "bytes" }, { "name": "data", "type": "bytes" }, { "name": "sig", "type": "bytes" } ], "name": "verify", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" } ], "bytecode": 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"source": "pragma solidity >0.4.23;\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 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/user/Dropbox/projects/enssec/contracts/algorithms/RSASHA1Algorithm.sol", "ast": { "absolutePath": "/home/user/Dropbox/projects/enssec/contracts/algorithms/RSASHA1Algorithm.sol", "exportedSymbols": { "RSASHA1Algorithm": [ 3374 ] }, "id": 3375, "nodeType": "SourceUnit", "nodes": [ { "id": 3247, "literals": [ "solidity", ">", "0.4", ".23" ], "nodeType": "PragmaDirective", "src": "0:24:9" }, { "absolutePath": "/home/user/Dropbox/projects/enssec/contracts/algorithms/Algorithm.sol", "file": "./Algorithm.sol", "id": 3248, "nodeType": "ImportDirective", "scope": 3375, "sourceUnit": 3125, "src": "26:25:9", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/user/Dropbox/projects/enssec/contracts/BytesUtils.sol", "file": "../BytesUtils.sol", "id": 3249, "nodeType": "ImportDirective", "scope": 3375, "sourceUnit": 721, "src": "52:27:9", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "/home/user/Dropbox/projects/enssec/contracts/algorithms/RSAVerify.sol", "file": "./RSAVerify.sol", "id": 3250, "nodeType": "ImportDirective", "scope": 3375, "sourceUnit": 3528, "src": "80:25:9", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@ensdomains/solsha1/contracts/SHA1.sol", "file": "@ensdomains/solsha1/contracts/SHA1.sol", "id": 3251, "nodeType": "ImportDirective", "scope": 3375, "sourceUnit": 4225, "src": "106:48:9", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 3252, "name": "Algorithm", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3124, "src": "240:9:9", "typeDescriptions": { "typeIdentifier": "t_contract$_Algorithm_$3124", "typeString": "contract Algorithm" } }, "id": 3253, "nodeType": "InheritanceSpecifier", "src": "240:9:9" } ], "contractDependencies": [ 3124 ], "contractKind": "contract", "documentation": "@dev Implements the 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