{ "abi": [], "allSourcePaths": { "12": "/home/vscode/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.7.3/contracts/utils/Strings.sol", "13": "/home/vscode/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.7.3/contracts/utils/cryptography/ECDSA.sol" }, "ast": { "absolutePath": "/home/vscode/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.7.3/contracts/utils/cryptography/ECDSA.sol", "exportedSymbols": { "ECDSA": [ 13816 ], "Strings": [ 16154 ] }, "id": 13817, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 13430, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "112:23:13" }, { "absolutePath": "/home/vscode/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.7.3/contracts/utils/Strings.sol", "file": "../Strings.sol", "id": 13431, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 13817, "sourceUnit": 16155, "src": "137:24:13", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 13432, "nodeType": "StructuredDocumentation", "src": "163:205:13", "text": " @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n These functions can be used to verify that a message was signed by the holder\n of the private keys of a given address." }, "fullyImplemented": true, "id": 13816, "linearizedBaseContracts": [ 13816 ], "name": "ECDSA", "nameLocation": "377:5:13", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "ECDSA.RecoverError", "id": 13438, "members": [ { "id": 13433, "name": "NoError", "nameLocation": "417:7:13", "nodeType": "EnumValue", "src": "417:7:13" }, { "id": 13434, "name": "InvalidSignature", "nameLocation": "434:16:13", "nodeType": "EnumValue", "src": "434:16:13" }, { "id": 13435, "name": "InvalidSignatureLength", "nameLocation": "460:22:13", "nodeType": "EnumValue", "src": "460:22:13" }, { "id": 13436, "name": "InvalidSignatureS", "nameLocation": "492:17:13", "nodeType": "EnumValue", "src": "492:17:13" }, { "id": 13437, "name": "InvalidSignatureV", "nameLocation": "519:17:13", "nodeType": "EnumValue", "src": "519:17:13" } ], "name": "RecoverError", "nameLocation": "394:12:13", "nodeType": "EnumDefinition", "src": "389:153:13" }, { "body": { "id": 13491, "nodeType": "Block", "src": "602:577:13", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "id": 13447, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13444, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13441, "src": "616:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 13445, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "625:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13446, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 13433, "src": "625:20:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "src": "616:29:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "id": 13453, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13450, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13441, "src": "712:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 13451, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "721:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13452, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 13434, "src": "721:29:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "src": "712:38:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "id": 13462, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13459, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13441, "src": "821:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 13460, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "830:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13461, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 13435, "src": "830:35:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "src": "821:44:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "id": 13471, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13468, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13441, "src": "943:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 13469, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "952:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13470, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 13436, "src": "952:30:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "src": "943:39:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "condition": { "commonType": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "id": 13480, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13477, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13441, "src": "1063:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "id": 13478, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "1072:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13479, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 13437, "src": "1072:30:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "src": "1063:39:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 13486, "nodeType": "IfStatement", "src": "1059:114:13", "trueBody": { "id": 13485, "nodeType": "Block", "src": "1104:69:13", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202776272076616c7565", "id": 13482, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1125:36:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" }, "value": "ECDSA: invalid signature 'v' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" } ], "id": 13481, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "1118:6:13", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 13483, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1118:44:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13484, "nodeType": "ExpressionStatement", "src": "1118:44:13" } ] } }, "id": 13487, "nodeType": "IfStatement", "src": "939:234:13", "trueBody": { "id": 13476, "nodeType": "Block", "src": "984:69:13", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202773272076616c7565", "id": 13473, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1005:36:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" }, "value": "ECDSA: invalid signature 's' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" } ], "id": 13472, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "998:6:13", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 13474, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "998:44:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13475, "nodeType": "ExpressionStatement", "src": "998:44:13" } ] } }, "id": 13488, "nodeType": "IfStatement", "src": "817:356:13", "trueBody": { "id": 13467, "nodeType": "Block", "src": "867:66:13", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265206c656e677468", "id": 13464, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "888:33:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" }, "value": "ECDSA: invalid signature length" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1669ff3ba3cdf64474e1193492d05b8434e29b0b495e60095eb5f5c8ec14ce77", "typeString": "literal_string \"ECDSA: invalid signature length\"" } ], "id": 13463, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "881:6:13", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 13465, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "881:41:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13466, "nodeType": "ExpressionStatement", "src": "881:41:13" } ] } }, "id": 13489, "nodeType": "IfStatement", "src": "708:465:13", "trueBody": { "id": 13458, "nodeType": "Block", "src": "752:59:13", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265", "id": 13455, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "773:26:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" }, "value": "ECDSA: invalid signature" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" } ], "id": 13454, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "766:6:13", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 13456, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "766:34:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13457, "nodeType": "ExpressionStatement", "src": "766:34:13" } ] } }, "id": 13490, "nodeType": "IfStatement", "src": "612:561:13", "trueBody": { "id": 13449, "nodeType": "Block", "src": "647:55:13", "statements": [ { "functionReturnParameters": 13443, "id": 13448, "nodeType": "Return", "src": "661:7:13" } ] } } ] }, "id": 13492, "implemented": true, "kind": "function", "modifiers": [], "name": "_throwError", "nameLocation": "557:11:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13442, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13441, "mutability": "mutable", "name": "error", "nameLocation": "582:5:13", "nodeType": "VariableDeclaration", "scope": 13492, "src": "569:18:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13440, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13439, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "569:12:13" }, "referencedDeclaration": 13438, "src": "569:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "568:20:13" }, "returnParameters": { "id": 13443, "nodeType": "ParameterList", "parameters": [], "src": "602:0:13" }, "scope": 13816, "src": "548:631:13", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 13537, "nodeType": "Block", "src": "2347:626:13", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 13508, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 13505, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13497, "src": "2361:9:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 13506, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "2361:16:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3635", "id": 13507, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2381:2:13", "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "2361:22:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 13535, "nodeType": "Block", "src": "2886:81:13", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 13529, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2916:1:13", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 13528, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2908:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13527, "name": "address", "nodeType": "ElementaryTypeName", "src": "2908:7:13", "typeDescriptions": {} } }, "id": 13530, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2908:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 13531, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "2920:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13532, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureLength", "nodeType": "MemberAccess", "referencedDeclaration": 13435, "src": "2920:35:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "id": 13533, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "2907:49:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13504, "id": 13534, "nodeType": "Return", "src": "2900:56:13" } ] }, "id": 13536, "nodeType": "IfStatement", "src": "2357:610:13", "trueBody": { "id": 13526, "nodeType": "Block", "src": "2385:495:13", "statements": [ { "assignments": [ 13510 ], "declarations": [ { "constant": false, "id": 13510, "mutability": "mutable", "name": "r", "nameLocation": "2407:1:13", "nodeType": "VariableDeclaration", "scope": 13526, "src": "2399:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13509, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2399:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 13511, "nodeType": "VariableDeclarationStatement", "src": "2399:9:13" }, { "assignments": [ 13513 ], "declarations": [ { "constant": false, "id": 13513, "mutability": "mutable", "name": "s", "nameLocation": "2430:1:13", "nodeType": "VariableDeclaration", "scope": 13526, "src": "2422:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13512, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2422:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 13514, "nodeType": "VariableDeclarationStatement", "src": "2422:9:13" }, { "assignments": [ 13516 ], "declarations": [ { "constant": false, "id": 13516, "mutability": "mutable", "name": "v", "nameLocation": "2451:1:13", "nodeType": "VariableDeclaration", "scope": 13526, "src": "2445:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 13515, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "2445:5:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 13517, "nodeType": "VariableDeclarationStatement", "src": "2445:7:13" }, { "AST": { "nodeType": "YulBlock", "src": "2653:171:13", "statements": [ { "nodeType": "YulAssignment", "src": "2671:32:13", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2686:9:13" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2697:4:13", "type": "", "value": "0x20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2682:3:13" }, "nodeType": "YulFunctionCall", "src": "2682:20:13" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2676:5:13" }, "nodeType": "YulFunctionCall", "src": "2676:27:13" }, "variableNames": [ { "name": "r", "nodeType": "YulIdentifier", "src": "2671:1:13" } ] }, { "nodeType": "YulAssignment", "src": "2720:32:13", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2735:9:13" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2746:4:13", "type": "", "value": "0x40" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2731:3:13" }, "nodeType": "YulFunctionCall", "src": "2731:20:13" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2725:5:13" }, "nodeType": "YulFunctionCall", "src": "2725:27:13" }, "variableNames": [ { "name": "s", "nodeType": "YulIdentifier", "src": "2720:1:13" } ] }, { "nodeType": "YulAssignment", "src": "2769:41:13", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "2779:1:13", "type": "", "value": "0" }, { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "2792:9:13" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2803:4:13", "type": "", "value": "0x60" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "2788:3:13" }, "nodeType": "YulFunctionCall", "src": "2788:20:13" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2782:5:13" }, "nodeType": "YulFunctionCall", "src": "2782:27:13" } ], "functionName": { "name": "byte", "nodeType": "YulIdentifier", "src": "2774:4:13" }, "nodeType": "YulFunctionCall", "src": "2774:36:13" }, "variableNames": [ { "name": "v", "nodeType": "YulIdentifier", "src": "2769:1:13" } ] } ] }, "documentation": "@solidity memory-safe-assembly", "evmVersion": "istanbul", "externalReferences": [ { "declaration": 13510, "isOffset": false, "isSlot": false, "src": "2671:1:13", "valueSize": 1 }, { "declaration": 13513, "isOffset": false, "isSlot": false, "src": "2720:1:13", "valueSize": 1 }, { "declaration": 13497, "isOffset": false, "isSlot": false, "src": "2686:9:13", "valueSize": 1 }, { "declaration": 13497, "isOffset": false, "isSlot": false, "src": "2735:9:13", "valueSize": 1 }, { "declaration": 13497, "isOffset": false, "isSlot": false, "src": "2792:9:13", "valueSize": 1 }, { "declaration": 13516, "isOffset": false, "isSlot": false, "src": "2769:1:13", "valueSize": 1 } ], "id": 13518, "nodeType": "InlineAssembly", "src": "2644:180:13" }, { "expression": { "arguments": [ { "id": 13520, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13495, "src": "2855:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13521, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13516, "src": "2861:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 13522, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13510, "src": "2864:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13523, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13513, "src": "2867:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13519, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 13538, 13612, 13723 ], "referencedDeclaration": 13723, "src": "2844:10:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 13524, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2844:25:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13504, "id": 13525, "nodeType": "Return", "src": "2837:32:13" } ] } } ] }, "documentation": { "id": 13493, "nodeType": "StructuredDocumentation", "src": "1185:1053:13", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature` or error string. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it.\n Documentation for signature generation:\n - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n _Available since v4.3._" }, "id": 13538, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "2252:10:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13498, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13495, "mutability": "mutable", "name": "hash", "nameLocation": "2271:4:13", "nodeType": "VariableDeclaration", "scope": 13538, "src": "2263:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13494, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2263:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13497, "mutability": "mutable", "name": "signature", "nameLocation": "2290:9:13", "nodeType": "VariableDeclaration", "scope": 13538, "src": "2277:22:13", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 13496, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2277:5:13", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "2262:38:13" }, "returnParameters": { "id": 13504, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13500, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13538, "src": "2324:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13499, "name": "address", "nodeType": "ElementaryTypeName", "src": "2324:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13503, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13538, "src": "2333:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13502, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13501, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "2333:12:13" }, "referencedDeclaration": 13438, "src": "2333:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "2323:23:13" }, "scope": 13816, "src": "2243:730:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13564, "nodeType": "Block", "src": "3846:140:13", "statements": [ { "assignments": [ 13549, 13552 ], "declarations": [ { "constant": false, "id": 13549, "mutability": "mutable", "name": "recovered", "nameLocation": "3865:9:13", "nodeType": "VariableDeclaration", "scope": 13564, "src": "3857:17:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13548, "name": "address", "nodeType": "ElementaryTypeName", "src": "3857:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13552, "mutability": "mutable", "name": "error", "nameLocation": "3889:5:13", "nodeType": "VariableDeclaration", "scope": 13564, "src": "3876:18:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13551, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13550, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "3876:12:13" }, "referencedDeclaration": 13438, "src": "3876:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 13557, "initialValue": { "arguments": [ { "id": 13554, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13541, "src": "3909:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13555, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13543, "src": "3915:9:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 13553, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 13538, 13612, 13723 ], "referencedDeclaration": 13538, "src": "3898:10:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes_memory_ptr_$returns$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "function (bytes32,bytes memory) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 13556, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3898:27:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "3856:69:13" }, { "expression": { "arguments": [ { "id": 13559, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13552, "src": "3947:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } ], "id": 13558, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13492, "src": "3935:11:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$13438_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 13560, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3935:18:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13561, "nodeType": "ExpressionStatement", "src": "3935:18:13" }, { "expression": { "id": 13562, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13549, "src": "3970:9:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 13547, "id": 13563, "nodeType": "Return", "src": "3963:16:13" } ] }, "documentation": { "id": 13539, "nodeType": "StructuredDocumentation", "src": "2979:775:13", "text": " @dev Returns the address that signed a hashed message (`hash`) with\n `signature`. This address can then be used for verification purposes.\n The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n this function rejects them by requiring the `s` value to be in the lower\n half order, and the `v` value to be either 27 or 28.\n IMPORTANT: `hash` _must_ be the result of a hash operation for the\n verification to be secure: it is possible to craft signatures that\n recover to arbitrary addresses for non-hashed data. A safe way to ensure\n this is by receiving a hash of the original message (which may otherwise\n be too long), and then calling {toEthSignedMessageHash} on it." }, "id": 13565, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "3768:7:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13544, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13541, "mutability": "mutable", "name": "hash", "nameLocation": "3784:4:13", "nodeType": "VariableDeclaration", "scope": 13565, "src": "3776:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13540, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3776:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13543, "mutability": "mutable", "name": "signature", "nameLocation": "3803:9:13", "nodeType": "VariableDeclaration", "scope": 13565, "src": "3790:22:13", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 13542, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3790:5:13", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3775:38:13" }, "returnParameters": { "id": 13547, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13546, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13565, "src": "3837:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13545, "name": "address", "nodeType": "ElementaryTypeName", "src": "3837:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "3836:9:13" }, "scope": 13816, "src": "3759:227:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13611, "nodeType": "Block", "src": "4373:203:13", "statements": [ { "assignments": [ 13581 ], "declarations": [ { "constant": false, "id": 13581, "mutability": "mutable", "name": "s", "nameLocation": "4391:1:13", "nodeType": "VariableDeclaration", "scope": 13611, "src": "4383:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13580, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4383:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 13588, "initialValue": { "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 13587, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13582, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13572, "src": "4395:2:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "arguments": [ { "hexValue": "307837666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666", "id": 13585, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4408:66:13", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" }, "value": "0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_57896044618658097711785492504343953926634992332820282019728792003956564819967_by_1", "typeString": "int_const 5789...(69 digits omitted)...9967" } ], "id": 13584, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4400:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 13583, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4400:7:13", "typeDescriptions": {} } }, "id": 13586, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4400:75:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "4395:80:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "VariableDeclarationStatement", "src": "4383:92:13" }, { "assignments": [ 13590 ], "declarations": [ { "constant": false, "id": 13590, "mutability": "mutable", "name": "v", "nameLocation": "4491:1:13", "nodeType": "VariableDeclaration", "scope": 13611, "src": "4485:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 13589, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4485:5:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 13603, "initialValue": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 13601, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 13598, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 13595, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13572, "src": "4510:2:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13594, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4502:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 13593, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4502:7:13", "typeDescriptions": {} } }, "id": 13596, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4502:11:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "hexValue": "323535", "id": 13597, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4517:3:13", "typeDescriptions": { "typeIdentifier": "t_rational_255_by_1", "typeString": "int_const 255" }, "value": "255" }, "src": "4502:18:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 13599, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "4501:20:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "3237", "id": 13600, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4524:2:13", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "4501:25:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 13592, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4495:5:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint8_$", "typeString": "type(uint8)" }, "typeName": { "id": 13591, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "4495:5:13", "typeDescriptions": {} } }, "id": 13602, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4495:32:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "VariableDeclarationStatement", "src": "4485:42:13" }, { "expression": { "arguments": [ { "id": 13605, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13568, "src": "4555:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13606, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13590, "src": "4561:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 13607, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13570, "src": "4564:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13608, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13581, "src": "4567:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13604, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 13538, 13612, 13723 ], "referencedDeclaration": 13723, "src": "4544:10:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 13609, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4544:25:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13579, "id": 13610, "nodeType": "Return", "src": "4537:32:13" } ] }, "documentation": { "id": 13566, "nodeType": "StructuredDocumentation", "src": "3992:243:13", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n _Available since v4.3._" }, "id": 13612, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "4249:10:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13573, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13568, "mutability": "mutable", "name": "hash", "nameLocation": "4277:4:13", "nodeType": "VariableDeclaration", "scope": 13612, "src": "4269:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13567, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4269:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13570, "mutability": "mutable", "name": "r", "nameLocation": "4299:1:13", "nodeType": "VariableDeclaration", "scope": 13612, "src": "4291:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13569, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4291:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13572, "mutability": "mutable", "name": "vs", "nameLocation": "4318:2:13", "nodeType": "VariableDeclaration", "scope": 13612, "src": "4310:10:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13571, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4310:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4259:67:13" }, "returnParameters": { "id": 13579, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13575, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13612, "src": "4350:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13574, "name": "address", "nodeType": "ElementaryTypeName", "src": "4350:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13578, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13612, "src": "4359:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13577, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13576, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "4359:12:13" }, "referencedDeclaration": 13438, "src": "4359:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "4349:23:13" }, "scope": 13816, "src": "4240:336:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13641, "nodeType": "Block", "src": "4857:136:13", "statements": [ { "assignments": [ 13625, 13628 ], "declarations": [ { "constant": false, "id": 13625, "mutability": "mutable", "name": "recovered", "nameLocation": "4876:9:13", "nodeType": "VariableDeclaration", "scope": 13641, "src": "4868:17:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13624, "name": "address", "nodeType": "ElementaryTypeName", "src": "4868:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13628, "mutability": "mutable", "name": "error", "nameLocation": "4900:5:13", "nodeType": "VariableDeclaration", "scope": 13641, "src": "4887:18:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13627, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13626, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "4887:12:13" }, "referencedDeclaration": 13438, "src": "4887:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 13634, "initialValue": { "arguments": [ { "id": 13630, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13615, "src": "4920:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13631, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13617, "src": "4926:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13632, "name": "vs", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13619, "src": "4929:2:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13629, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 13538, 13612, 13723 ], "referencedDeclaration": 13612, "src": "4909:10:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "function (bytes32,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 13633, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4909:23:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "4867:65:13" }, { "expression": { "arguments": [ { "id": 13636, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13628, "src": "4954:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } ], "id": 13635, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13492, "src": "4942:11:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$13438_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 13637, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4942:18:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13638, "nodeType": "ExpressionStatement", "src": "4942:18:13" }, { "expression": { "id": 13639, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13625, "src": "4977:9:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 13623, "id": 13640, "nodeType": "Return", "src": "4970:16:13" } ] }, "documentation": { "id": 13613, "nodeType": "StructuredDocumentation", "src": "4582:154:13", "text": " @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n _Available since v4.2._" }, "id": 13642, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "4750:7:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13620, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13615, "mutability": "mutable", "name": "hash", "nameLocation": "4775:4:13", "nodeType": "VariableDeclaration", "scope": 13642, "src": "4767:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13614, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4767:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13617, "mutability": "mutable", "name": "r", "nameLocation": "4797:1:13", "nodeType": "VariableDeclaration", "scope": 13642, "src": "4789:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13616, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4789:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13619, "mutability": "mutable", "name": "vs", "nameLocation": "4816:2:13", "nodeType": "VariableDeclaration", "scope": 13642, "src": "4808:10:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13618, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "4808:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "4757:67:13" }, "returnParameters": { "id": 13623, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13622, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13642, "src": "4848:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13621, "name": "address", "nodeType": "ElementaryTypeName", "src": "4848:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "4847:9:13" }, "scope": 13816, "src": "4741:252:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13722, "nodeType": "Block", "src": "5316:1454:13", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 13664, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 13661, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13651, "src": "6212:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13660, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6204:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 13659, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6204:7:13", "typeDescriptions": {} } }, "id": 13662, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6204:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "hexValue": "307837464646464646464646464646464646464646464646464646464646464646463544353736453733353741343530314444464539324634363638314232304130", "id": 13663, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6217:66:13", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926418782139537452191302581570759080747168_by_1", "typeString": "int_const 5789...(69 digits omitted)...7168" }, "value": "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0" }, "src": "6204:79:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 13674, "nodeType": "IfStatement", "src": "6200:161:13", "trueBody": { "id": 13673, "nodeType": "Block", "src": "6285:76:13", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 13667, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6315:1:13", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 13666, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6307:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13665, "name": "address", "nodeType": "ElementaryTypeName", "src": "6307:7:13", "typeDescriptions": {} } }, "id": 13668, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6307:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 13669, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "6319:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13670, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureS", "nodeType": "MemberAccess", "referencedDeclaration": 13436, "src": "6319:30:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "id": 13671, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6306:44:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13658, "id": 13672, "nodeType": "Return", "src": "6299:51:13" } ] } }, { "condition": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 13681, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 13677, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13675, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13647, "src": "6374:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3237", "id": 13676, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6379:2:13", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "6374:7:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "&&", "rightExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 13680, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13678, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13647, "src": "6385:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3238", "id": 13679, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6390:2:13", "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "6385:7:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "6374:18:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 13691, "nodeType": "IfStatement", "src": "6370:100:13", "trueBody": { "id": 13690, "nodeType": "Block", "src": "6394:76:13", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 13684, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6424:1:13", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 13683, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6416:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13682, "name": "address", "nodeType": "ElementaryTypeName", "src": "6416:7:13", "typeDescriptions": {} } }, "id": 13685, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6416:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 13686, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "6428:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13687, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignatureV", "nodeType": "MemberAccess", "referencedDeclaration": 13437, "src": "6428:30:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "id": 13688, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6415:44:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13658, "id": 13689, "nodeType": "Return", "src": "6408:51:13" } ] } }, { "assignments": [ 13693 ], "declarations": [ { "constant": false, "id": 13693, "mutability": "mutable", "name": "signer", "nameLocation": "6572:6:13", "nodeType": "VariableDeclaration", "scope": 13722, "src": "6564:14:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13692, "name": "address", "nodeType": "ElementaryTypeName", "src": "6564:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 13700, "initialValue": { "arguments": [ { "id": 13695, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13645, "src": "6591:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13696, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13647, "src": "6597:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 13697, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13649, "src": "6600:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13698, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13651, "src": "6603:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13694, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -6, "src": "6581:9:13", "typeDescriptions": { "typeIdentifier": "t_function_ecrecover_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 13699, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6581:24:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "6564:41:13" }, { "condition": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 13706, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 13701, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13693, "src": "6619:6:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 13704, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6637:1:13", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 13703, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6629:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13702, "name": "address", "nodeType": "ElementaryTypeName", "src": "6629:7:13", "typeDescriptions": {} } }, "id": 13705, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6629:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "6619:20:13", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 13716, "nodeType": "IfStatement", "src": "6615:101:13", "trueBody": { "id": 13715, "nodeType": "Block", "src": "6641:75:13", "statements": [ { "expression": { "components": [ { "arguments": [ { "hexValue": "30", "id": 13709, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "6671:1:13", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 13708, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "6663:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 13707, "name": "address", "nodeType": "ElementaryTypeName", "src": "6663:7:13", "typeDescriptions": {} } }, "id": 13710, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6663:10:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 13711, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "6675:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13712, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "InvalidSignature", "nodeType": "MemberAccess", "referencedDeclaration": 13434, "src": "6675:29:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "id": 13713, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6662:43:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13658, "id": 13714, "nodeType": "Return", "src": "6655:50:13" } ] } }, { "expression": { "components": [ { "id": 13717, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13693, "src": "6734:6:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "expression": { "id": 13718, "name": "RecoverError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13438, "src": "6742:12:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_RecoverError_$13438_$", "typeString": "type(enum ECDSA.RecoverError)" } }, "id": 13719, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "NoError", "nodeType": "MemberAccess", "referencedDeclaration": 13433, "src": "6742:20:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "id": 13720, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "6733:30:13", "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "functionReturnParameters": 13658, "id": 13721, "nodeType": "Return", "src": "6726:37:13" } ] }, "documentation": { "id": 13643, "nodeType": "StructuredDocumentation", "src": "4999:163:13", "text": " @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n `r` and `s` signature fields separately.\n _Available since v4.3._" }, "id": 13723, "implemented": true, "kind": "function", "modifiers": [], "name": "tryRecover", "nameLocation": "5176:10:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13652, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13645, "mutability": "mutable", "name": "hash", "nameLocation": "5204:4:13", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5196:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13644, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5196:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13647, "mutability": "mutable", "name": "v", "nameLocation": "5224:1:13", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5218:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 13646, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "5218:5:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 13649, "mutability": "mutable", "name": "r", "nameLocation": "5243:1:13", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5235:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13648, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5235:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13651, "mutability": "mutable", "name": "s", "nameLocation": "5262:1:13", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5254:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13650, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "5254:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "5186:83:13" }, "returnParameters": { "id": 13658, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13654, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5293:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13653, "name": "address", "nodeType": "ElementaryTypeName", "src": "5293:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13657, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13723, "src": "5302:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13656, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13655, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "5302:12:13" }, "referencedDeclaration": 13438, "src": "5302:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "src": "5292:23:13" }, "scope": 13816, "src": "5167:1603:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13755, "nodeType": "Block", "src": "7035:138:13", "statements": [ { "assignments": [ 13738, 13741 ], "declarations": [ { "constant": false, "id": 13738, "mutability": "mutable", "name": "recovered", "nameLocation": "7054:9:13", "nodeType": "VariableDeclaration", "scope": 13755, "src": "7046:17:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13737, "name": "address", "nodeType": "ElementaryTypeName", "src": "7046:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 13741, "mutability": "mutable", "name": "error", "nameLocation": "7078:5:13", "nodeType": "VariableDeclaration", "scope": 13755, "src": "7065:18:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" }, "typeName": { "id": 13740, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 13739, "name": "RecoverError", "nodeType": "IdentifierPath", "referencedDeclaration": 13438, "src": "7065:12:13" }, "referencedDeclaration": 13438, "src": "7065:12:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } }, "visibility": "internal" } ], "id": 13748, "initialValue": { "arguments": [ { "id": 13743, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13726, "src": "7098:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13744, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13728, "src": "7104:1:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 13745, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13730, "src": "7107:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13746, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13732, "src": "7110:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 13742, "name": "tryRecover", "nodeType": "Identifier", "overloadedDeclarations": [ 13538, 13612, 13723 ], "referencedDeclaration": 13723, "src": "7087:10:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address,enum ECDSA.RecoverError)" } }, "id": 13747, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7087:25:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_address_$_t_enum$_RecoverError_$13438_$", "typeString": "tuple(address,enum ECDSA.RecoverError)" } }, "nodeType": "VariableDeclarationStatement", "src": "7045:67:13" }, { "expression": { "arguments": [ { "id": 13750, "name": "error", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13741, "src": "7134:5:13", "typeDescriptions": { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_enum$_RecoverError_$13438", "typeString": "enum ECDSA.RecoverError" } ], "id": 13749, "name": "_throwError", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13492, "src": "7122:11:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_enum$_RecoverError_$13438_$returns$__$", "typeString": "function (enum ECDSA.RecoverError) pure" } }, "id": 13751, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7122:18:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 13752, "nodeType": "ExpressionStatement", "src": "7122:18:13" }, { "expression": { "id": 13753, "name": "recovered", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13738, "src": "7157:9:13", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 13736, "id": 13754, "nodeType": "Return", "src": "7150:16:13" } ] }, "documentation": { "id": 13724, "nodeType": "StructuredDocumentation", "src": "6776:122:13", "text": " @dev Overload of {ECDSA-recover} that receives the `v`,\n `r` and `s` signature fields separately." }, "id": 13756, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "nameLocation": "6912:7:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13733, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13726, "mutability": "mutable", "name": "hash", "nameLocation": "6937:4:13", "nodeType": "VariableDeclaration", "scope": 13756, "src": "6929:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13725, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6929:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13728, "mutability": "mutable", "name": "v", "nameLocation": "6957:1:13", "nodeType": "VariableDeclaration", "scope": 13756, "src": "6951:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 13727, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "6951:5:13", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 13730, "mutability": "mutable", "name": "r", "nameLocation": "6976:1:13", "nodeType": "VariableDeclaration", "scope": 13756, "src": "6968:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13729, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6968:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13732, "mutability": "mutable", "name": "s", "nameLocation": "6995:1:13", "nodeType": "VariableDeclaration", "scope": 13756, "src": "6987:9:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13731, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6987:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "6919:83:13" }, "returnParameters": { "id": 13736, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13735, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13756, "src": "7026:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 13734, "name": "address", "nodeType": "ElementaryTypeName", "src": "7026:7:13", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "7025:9:13" }, "scope": 13816, "src": "6903:270:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13772, "nodeType": "Block", "src": "7541:187:13", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a3332", "id": 13767, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7679:34:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, "value": "\u0019Ethereum Signed Message:\n32" }, { "id": 13768, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13759, "src": "7715:4:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 13765, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "7662:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 13766, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "7662:16:13", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 13769, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7662:58:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 13764, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "7652:9:13", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 13770, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7652:69:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 13763, "id": 13771, "nodeType": "Return", "src": "7645:76:13" } ] }, "documentation": { "id": 13757, "nodeType": "StructuredDocumentation", "src": "7179:279:13", "text": " @dev Returns an Ethereum Signed Message, created from a `hash`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 13773, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "7472:22:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13760, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13759, "mutability": "mutable", "name": "hash", "nameLocation": "7503:4:13", "nodeType": "VariableDeclaration", "scope": 13773, "src": "7495:12:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13758, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7495:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7494:14:13" }, "returnParameters": { "id": 13763, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13762, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13773, "src": "7532:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13761, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "7532:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "7531:9:13" }, "scope": 13816, "src": "7463:265:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13794, "nodeType": "Block", "src": "8093:116:13", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a", "id": 13784, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8137:32:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, "value": "\u0019Ethereum Signed Message:\n" }, { "arguments": [ { "expression": { "id": 13787, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13776, "src": "8188:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 13788, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "8188:8:13", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 13785, "name": "Strings", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 16154, "src": "8171:7:13", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_Strings_$16154_$", "typeString": "type(library Strings)" } }, "id": 13786, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "toString", "nodeType": "MemberAccess", "referencedDeclaration": 16016, "src": "8171:16:13", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$returns$_t_string_memory_ptr_$", "typeString": "function (uint256) pure returns (string memory)" } }, "id": 13789, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8171:26:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, { "id": 13790, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13776, "src": "8199:1:13", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_9af2d9c228f6cfddaa6d1e5b94e0bce4ab16bd9a472a2b7fbfd74ebff4c720b4", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a\"" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "id": 13782, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "8120:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 13783, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8120:16:13", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 13791, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8120:81:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 13781, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "8110:9:13", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 13792, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8110:92:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 13780, "id": 13793, "nodeType": "Return", "src": "8103:99:13" } ] }, "documentation": { "id": 13774, "nodeType": "StructuredDocumentation", "src": "7734:274:13", "text": " @dev Returns an Ethereum Signed Message, created from `s`. This\n produces hash corresponding to the one signed with the\n https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n JSON-RPC method as part of EIP-191.\n See {recover}." }, "id": 13795, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "nameLocation": "8022:22:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13777, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13776, "mutability": "mutable", "name": "s", "nameLocation": "8058:1:13", "nodeType": "VariableDeclaration", "scope": 13795, "src": "8045:14:13", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 13775, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8045:5:13", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "8044:16:13" }, "returnParameters": { "id": 13780, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13779, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13795, "src": "8084:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13778, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8084:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8083:9:13" }, "scope": 13816, "src": "8013:196:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 13814, "nodeType": "Block", "src": "8650:92:13", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "1901", "id": 13808, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8694:10:13", "typeDescriptions": { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, "value": "\u0019\u0001" }, { "id": 13809, "name": "domainSeparator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13798, "src": "8706:15:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 13810, "name": "structHash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 13800, "src": "8723:10:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_301a50b291d33ce1e8e9064e3f6a6c51d902ec22892b50d58abf6357c6a45541", "typeString": "literal_string hex\"1901\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 13806, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "8677:3:13", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 13807, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "8677:16:13", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 13811, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8677:57:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 13805, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "8667:9:13", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 13812, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8667:68:13", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 13804, "id": 13813, "nodeType": "Return", "src": "8660:75:13" } ] }, "documentation": { "id": 13796, "nodeType": "StructuredDocumentation", "src": "8215:328:13", "text": " @dev Returns an Ethereum Signed Typed Data, created from a\n `domainSeparator` and a `structHash`. This produces hash corresponding\n to the one signed with the\n https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n JSON-RPC method as part of EIP-712.\n See {recover}." }, "id": 13815, "implemented": true, "kind": "function", "modifiers": [], "name": "toTypedDataHash", "nameLocation": "8557:15:13", "nodeType": "FunctionDefinition", "parameters": { "id": 13801, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13798, "mutability": "mutable", "name": "domainSeparator", "nameLocation": "8581:15:13", "nodeType": "VariableDeclaration", "scope": 13815, "src": "8573:23:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13797, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8573:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 13800, "mutability": "mutable", "name": "structHash", "nameLocation": "8606:10:13", "nodeType": "VariableDeclaration", "scope": 13815, "src": "8598:18:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13799, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8598:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8572:45:13" }, "returnParameters": { "id": 13804, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 13803, "mutability": "mutable", "name": "", "nameLocation": "-1:-1:-1", "nodeType": "VariableDeclaration", "scope": 13815, "src": "8641:7:13", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 13802, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8641:7:13", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8640:9:13" }, "scope": 13816, "src": "8548:194:13", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 13817, "src": "369:8375:13" } ], "src": "112:8633:13" }, "bytecode": "60566037600b82828239805160001a607314602a57634e487b7160e01b600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220c589173656c3e1b24afdbbf02c04a31dce821efe8da0376d7001d184cd8b585564736f6c63430008020033", "bytecodeSha1": "1ce946f6a4eaa185320328620ccf999b9e86db7c", "compiler": { "evm_version": "istanbul", "optimizer": { "enabled": true, "runs": 200 }, "version": "0.8.2+commit.661d1103" }, "contractName": "ECDSA", "coverageMap": { "branches": { "12": {}, "13": {} }, "statements": { "12": {}, "13": {} } }, "dependencies": [ "OpenZeppelin/openzeppelin-contracts@4.7.3/Strings" ], "deployedBytecode": "73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220c589173656c3e1b24afdbbf02c04a31dce821efe8da0376d7001d184cd8b585564736f6c63430008020033", "deployedSourceMap": "369:8375:13:-:0;;;;;;;;", "language": "Solidity", "natspec": { "details": "Elliptic Curve Digital Signature Algorithm (ECDSA) operations. These functions can be used to verify that a message was signed by the holder of the private keys of a given address.", "kind": "dev", "methods": {}, "version": 1 }, "offset": [ 369, 8744 ], "opcodes": "PUSH20 0x0 ADDRESS EQ PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x0 DUP1 REVERT INVALID LOG2 PUSH5 0x6970667358 0x22 SLT KECCAK256 0xC5 DUP10 OR CALLDATASIZE JUMP 0xC3 0xE1 0xB2 0x4A REVERT 0xBB CREATE 0x2C DIV LOG3 SAR 0xCE DUP3 0x1E INVALID DUP14 LOG0 CALLDATACOPY PUSH14 0x7001D184CD8B585564736F6C6343 STOP ADDMOD MUL STOP CALLER ", "pcMap": { "0": { "offset": [ 369, 8744 ], "op": "PUSH20", "path": "13", "value": "0x0" }, "21": { "fn": null, "offset": [ 369, 8744 ], "op": "ADDRESS", "path": "13" }, "22": { "fn": null, "offset": [ 369, 8744 ], "op": "EQ", "path": "13" }, "23": { "fn": null, "offset": [ 369, 8744 ], "op": "PUSH1", "path": "13", "value": "0x80" }, "25": { "fn": null, "offset": [ 369, 8744 ], "op": "PUSH1", "path": "13", "value": "0x40" }, "27": { "fn": null, "offset": [ 369, 8744 ], "op": "MSTORE", "path": "13" }, "28": { "fn": null, "offset": [ 369, 8744 ], "op": "PUSH1", "path": "13", "value": "0x0" }, "30": { "fn": null, "offset": [ 369, 8744 ], "op": "DUP1", "path": "13" }, "31": { "fn": null, "offset": [ 369, 8744 ], "op": "REVERT", "path": "13" } }, "sha1": "9d9e160ce629d236a37349454e5078315b14cde7", "source": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../Strings.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSA {\n enum RecoverError {\n NoError,\n InvalidSignature,\n InvalidSignatureLength,\n InvalidSignatureS,\n InvalidSignatureV\n }\n\n function _throwError(RecoverError error) private pure {\n if (error == RecoverError.NoError) {\n return; // no error: do nothing\n } else if (error == RecoverError.InvalidSignature) {\n revert(\"ECDSA: invalid signature\");\n } else if (error == RecoverError.InvalidSignatureLength) {\n revert(\"ECDSA: invalid signature length\");\n } else if (error == RecoverError.InvalidSignatureS) {\n revert(\"ECDSA: invalid signature 's' value\");\n } else if (error == RecoverError.InvalidSignatureV) {\n revert(\"ECDSA: invalid signature 'v' value\");\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature` or error string. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n *\n * Documentation for signature generation:\n * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n *\n * _Available since v4.3._\n */\n function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n if (signature.length == 65) {\n bytes32 r;\n bytes32 s;\n uint8 v;\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n /// @solidity memory-safe-assembly\n assembly {\n r := mload(add(signature, 0x20))\n s := mload(add(signature, 0x40))\n v := byte(0, mload(add(signature, 0x60)))\n }\n return tryRecover(hash, v, r, s);\n } else {\n return (address(0), RecoverError.InvalidSignatureLength);\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature`. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n */\n function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, signature);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n *\n * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address, RecoverError) {\n bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);\n uint8 v = uint8((uint256(vs) >> 255) + 27);\n return tryRecover(hash, v, r, s);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n *\n * _Available since v4.2._\n */\n function recover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n * `r` and `s` signature fields separately.\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address, RecoverError) {\n // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n // the valid range for s in (301): 0 < s < secp256k1n \u00f7 2 + 1, and for v in (302): v \u2208 {27, 28}. Most\n // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n //\n // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n // these malleable signatures as well.\n if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n return (address(0), RecoverError.InvalidSignatureS);\n }\n if (v != 27 && v != 28) {\n return (address(0), RecoverError.InvalidSignatureV);\n }\n\n // If the signature is valid (and not malleable), return the signer address\n address signer = ecrecover(hash, v, r, s);\n if (signer == address(0)) {\n return (address(0), RecoverError.InvalidSignature);\n }\n\n return (signer, RecoverError.NoError);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `v`,\n * `r` and `s` signature fields separately.\n */\n function recover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from `s`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", Strings.toString(s.length), s));\n }\n\n /**\n * @dev Returns an Ethereum Signed Typed Data, created from a\n * `domainSeparator` and a `structHash`. This produces hash corresponding\n * to the one signed with the\n * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n * JSON-RPC method as part of EIP-712.\n *\n * See {recover}.\n */\n function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n }\n}\n", "sourceMap": "369:8375:13:-:0;;;;;;;;;;;;;;;-1:-1:-1;;;369:8375:13;;;;;;;;;;;;;;;;;", "sourcePath": "/home/vscode/.brownie/packages/OpenZeppelin/openzeppelin-contracts@4.7.3/contracts/utils/cryptography/ECDSA.sol", "type": "library" }