{ "abi": [], "bytecode": { "object": "0x602d6023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea164736f6c6343000706000a", "sourceMap": "272:3633:23:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "linkReferences": {} }, "deployedBytecode": { "object": "0x73000000000000000000000000000000000000000030146080604052600080fdfea164736f6c6343000706000a", "sourceMap": "272:3633:23:-:0;;;;;;;;", "linkReferences": {} }, "methodIdentifiers": {}, "ast": { "absolutePath": "node_modules/@openzeppelin/contracts/cryptography/ECDSA.sol", "id": 26497, "exportedSymbols": { "ECDSA": [ 26496 ] }, "nodeType": "SourceUnit", "src": "33:3873:23", "nodes": [ { "id": 26382, "nodeType": "PragmaDirective", "src": "33:31:23", "literals": [ "solidity", ">=", "0.6", ".0", "<", "0.8", ".0" ] }, { "id": 26496, "nodeType": "ContractDefinition", "src": "272:3633:23", "nodes": [ { "id": 26421, "nodeType": "FunctionDefinition", "src": "1072:740:23", "body": { "id": 26420, "nodeType": "Block", "src": "1159:653:23", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 26396, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 26393, "name": "signature", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26388, "src": "1211:9:23", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 26394, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "1211:16:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "3635", "id": 26395, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1231:2:23", "typeDescriptions": { "typeIdentifier": "t_rational_65_by_1", "typeString": "int_const 65" }, "value": "65" }, "src": "1211:22:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 26402, "nodeType": "IfStatement", "src": "1207:94:23", "trueBody": { "id": 26401, "nodeType": "Block", "src": "1235:66:23", "statements": [ { "expression": { "arguments": [ { "hexValue": "45434453413a20696e76616c6964207369676e6174757265206c656e677468", "id": 26398, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1256:33:23", "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": 26397, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ -19, -19 ], "referencedDeclaration": -19, "src": "1249:6:23", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 26399, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1249:41:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 26400, "nodeType": "ExpressionStatement", "src": "1249:41:23" } ] } }, { "assignments": [ 26404 ], "declarations": [ { "constant": false, "id": 26404, "mutability": "mutable", "name": "r", "nodeType": "VariableDeclaration", "scope": 26420, "src": "1367:9:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26403, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1367:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 26405, "nodeType": "VariableDeclarationStatement", "src": "1367:9:23" }, { "assignments": [ 26407 ], "declarations": [ { "constant": false, "id": 26407, "mutability": "mutable", "name": "s", "nodeType": "VariableDeclaration", "scope": 26420, "src": "1386:9:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26406, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1386:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "id": 26408, "nodeType": "VariableDeclarationStatement", "src": "1386:9:23" }, { "assignments": [ 26410 ], "declarations": [ { "constant": false, "id": 26410, "mutability": "mutable", "name": "v", "nodeType": "VariableDeclaration", "scope": 26420, "src": "1405:7:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 26409, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1405:5:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "id": 26411, "nodeType": "VariableDeclarationStatement", "src": "1405:7:23" }, { "AST": { "nodeType": "YulBlock", "src": "1611:155:23", "statements": [ { "nodeType": "YulAssignment", "src": "1625:32:23", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "1640:9:23" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1651:4:23", "type": "", "value": "0x20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1636:3:23" }, "nodeType": "YulFunctionCall", "src": "1636:20:23" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "1630:5:23" }, "nodeType": "YulFunctionCall", "src": "1630:27:23" }, "variableNames": [ { "name": "r", "nodeType": "YulIdentifier", "src": "1625:1:23" } ] }, { "nodeType": "YulAssignment", "src": "1670:32:23", "value": { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "1685:9:23" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1696:4:23", "type": "", "value": "0x40" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1681:3:23" }, "nodeType": "YulFunctionCall", "src": "1681:20:23" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "1675:5:23" }, "nodeType": "YulFunctionCall", "src": "1675:27:23" }, "variableNames": [ { "name": "s", "nodeType": "YulIdentifier", "src": "1670:1:23" } ] }, { "nodeType": "YulAssignment", "src": "1715:41:23", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1725:1:23", "type": "", "value": "0" }, { "arguments": [ { "arguments": [ { "name": "signature", "nodeType": "YulIdentifier", "src": "1738:9:23" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1749:4:23", "type": "", "value": "0x60" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1734:3:23" }, "nodeType": "YulFunctionCall", "src": "1734:20:23" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "1728:5:23" }, "nodeType": "YulFunctionCall", "src": "1728:27:23" } ], "functionName": { "name": "byte", "nodeType": "YulIdentifier", "src": "1720:4:23" }, "nodeType": "YulFunctionCall", "src": "1720:36:23" }, "variableNames": [ { "name": "v", "nodeType": "YulIdentifier", "src": "1715:1:23" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 26404, "isOffset": false, "isSlot": false, "src": "1625:1:23", "valueSize": 1 }, { "declaration": 26407, "isOffset": false, "isSlot": false, "src": "1670:1:23", "valueSize": 1 }, { "declaration": 26388, "isOffset": false, "isSlot": false, "src": "1640:9:23", "valueSize": 1 }, { "declaration": 26388, "isOffset": false, "isSlot": false, "src": "1685:9:23", "valueSize": 1 }, { "declaration": 26388, "isOffset": false, "isSlot": false, "src": "1738:9:23", "valueSize": 1 }, { "declaration": 26410, "isOffset": false, "isSlot": false, "src": "1715:1:23", "valueSize": 1 } ], "id": 26412, "nodeType": "InlineAssembly", "src": "1602:164:23" }, { "expression": { "arguments": [ { "id": 26414, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26386, "src": "1791:4:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 26415, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26410, "src": "1797:1:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 26416, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26404, "src": "1800:1:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 26417, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26407, "src": "1803:1:23", "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": 26413, "name": "recover", "nodeType": "Identifier", "overloadedDeclarations": [ 26421, 26478 ], "referencedDeclaration": 26478, "src": "1783:7:23", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_bytes32_$_t_uint8_$_t_bytes32_$_t_bytes32_$returns$_t_address_$", "typeString": "function (bytes32,uint8,bytes32,bytes32) pure returns (address)" } }, "id": 26418, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1783:22:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 26392, "id": 26419, "nodeType": "Return", "src": "1776:29:23" } ] }, "documentation": { "id": 26384, "nodeType": "StructuredDocumentation", "src": "292:775:23", "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." }, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "parameters": { "id": 26389, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26386, "mutability": "mutable", "name": "hash", "nodeType": "VariableDeclaration", "scope": 26421, "src": "1089:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26385, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1089:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 26388, "mutability": "mutable", "name": "signature", "nodeType": "VariableDeclaration", "scope": 26421, "src": "1103:22:23", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 26387, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1103:5:23", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "1088:38:23" }, "returnParameters": { "id": 26392, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26391, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 26421, "src": "1150:7:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 26390, "name": "address", "nodeType": "ElementaryTypeName", "src": "1150:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "1149:9:23" }, "scope": 26496, "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "id": 26478, "nodeType": "FunctionDefinition", "src": "1960:1414:23", "body": { "id": 26477, "nodeType": "Block", "src": "2054:1320:23", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 26441, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 26438, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26430, "src": "2954:1:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "id": 26437, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2946:7:23", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 26436, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2946:7:23", "typeDescriptions": {} } }, "id": 26439, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2946:10:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "hexValue": "307837464646464646464646464646464646464646464646464646464646464646463544353736453733353741343530314444464539324634363638314232304130", "id": 26440, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2960:66:23", "typeDescriptions": { "typeIdentifier": "t_rational_57896044618658097711785492504343953926418782139537452191302581570759080747168_by_1", "typeString": "int_const 5789...(69 digits omitted)...7168" }, "value": "0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0" }, "src": "2946:80:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202773272076616c7565", "id": 26442, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3028:36:23", "typeDescriptions": { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" }, "value": "ECDSA: invalid signature 's' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_520d1f787dbcafbbfc007fd2c4ecf3d2711ec587f3ee9a1215c0b646c3e530bd", "typeString": "literal_string \"ECDSA: invalid signature 's' value\"" } ], "id": 26435, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2938:7:23", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 26443, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2938:127:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 26444, "nodeType": "ExpressionStatement", "src": "2938:127:23" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 26452, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 26448, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 26446, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26426, "src": "3083:1:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3237", "id": 26447, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3088:2:23", "typeDescriptions": { "typeIdentifier": "t_rational_27_by_1", "typeString": "int_const 27" }, "value": "27" }, "src": "3083:7:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 26451, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 26449, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26426, "src": "3094:1:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3238", "id": 26450, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3099:2:23", "typeDescriptions": { "typeIdentifier": "t_rational_28_by_1", "typeString": "int_const 28" }, "value": "28" }, "src": "3094:7:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "3083:18:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "45434453413a20696e76616c6964207369676e6174757265202776272076616c7565", "id": 26453, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3103:36:23", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" }, "value": "ECDSA: invalid signature 'v' value" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_8522ee1b53216f595394db8e80a64d9e7d9bd512c0811c18debe9f40858597e4", "typeString": "literal_string \"ECDSA: invalid signature 'v' value\"" } ], "id": 26445, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "3075:7:23", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 26454, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3075:65:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 26455, "nodeType": "ExpressionStatement", "src": "3075:65:23" }, { "assignments": [ 26457 ], "declarations": [ { "constant": false, "id": 26457, "mutability": "mutable", "name": "signer", "nodeType": "VariableDeclaration", "scope": 26477, "src": "3235:14:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 26456, "name": "address", "nodeType": "ElementaryTypeName", "src": "3235:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 26464, "initialValue": { "arguments": [ { "id": 26459, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26424, "src": "3262:4:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 26460, "name": "v", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26426, "src": "3268:1:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 26461, "name": "r", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26428, "src": "3271:1:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "id": 26462, "name": "s", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26430, "src": "3274:1:23", "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": 26458, "name": "ecrecover", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -6, "src": "3252:9:23", "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": 26463, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3252:24:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "3235:41:23" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 26471, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 26466, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26457, "src": "3294:6:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 26469, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3312:1:23", "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": 26468, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "3304:7:23", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 26467, "name": "address", "nodeType": "ElementaryTypeName", "src": "3304:7:23", "typeDescriptions": {} } }, "id": 26470, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3304:10:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "3294:20:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "45434453413a20696e76616c6964207369676e6174757265", "id": 26472, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3316:26:23", "typeDescriptions": { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" }, "value": "ECDSA: invalid signature" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_00043f6bf76368aa97c21698e9b9d4779e31902453daccf3525ddfb36e53e2be", "typeString": "literal_string \"ECDSA: invalid signature\"" } ], "id": 26465, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "3286:7:23", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 26473, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3286:57:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 26474, "nodeType": "ExpressionStatement", "src": "3286:57:23" }, { "expression": { "id": 26475, "name": "signer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26457, "src": "3361:6:23", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 26434, "id": 26476, "nodeType": "Return", "src": "3354:13:23" } ] }, "documentation": { "id": 26422, "nodeType": "StructuredDocumentation", "src": "1818:137:23", "text": " @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`,\n `r` and `s` signature fields separately." }, "implemented": true, "kind": "function", "modifiers": [], "name": "recover", "parameters": { "id": 26431, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26424, "mutability": "mutable", "name": "hash", "nodeType": "VariableDeclaration", "scope": 26478, "src": "1977:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26423, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "1977:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 26426, "mutability": "mutable", "name": "v", "nodeType": "VariableDeclaration", "scope": 26478, "src": "1991:7:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 26425, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1991:5:23", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 26428, "mutability": "mutable", "name": "r", "nodeType": "VariableDeclaration", "scope": 26478, "src": "2000:9:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26427, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2000:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 26430, "mutability": "mutable", "name": "s", "nodeType": "VariableDeclaration", "scope": 26478, "src": "2011:9:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26429, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "2011:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "1976:45:23" }, "returnParameters": { "id": 26434, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26433, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 26478, "src": "2045:7:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 26432, "name": "address", "nodeType": "ElementaryTypeName", "src": "2045:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "2044:9:23" }, "scope": 26496, "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "id": 26495, "nodeType": "FunctionDefinition", "src": "3638:265:23", "body": { "id": 26494, "nodeType": "Block", "src": "3716:187:23", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "hexValue": "19457468657265756d205369676e6564204d6573736167653a0a3332", "id": 26489, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3854:34:23", "typeDescriptions": { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, "value": "\u0019Ethereum Signed Message:\n32" }, { "id": 26490, "name": "hash", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 26481, "src": "3890:4:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_178a2411ab6fbc1ba11064408972259c558d0e82fd48b0aba3ad81d14f065e73", "typeString": "literal_string hex\"19457468657265756d205369676e6564204d6573736167653a0a3332\"" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } ], "expression": { "id": 26487, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -1, "src": "3837:3:23", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 26488, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "3837:16:23", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 26491, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3837:58:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 26486, "name": "keccak256", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": -8, "src": "3827:9:23", "typeDescriptions": { "typeIdentifier": "t_function_keccak256_pure$_t_bytes_memory_ptr_$returns$_t_bytes32_$", "typeString": "function (bytes memory) pure returns (bytes32)" } }, "id": 26492, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3827:69:23", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "functionReturnParameters": 26485, "id": 26493, "nodeType": "Return", "src": "3820:76:23" } ] }, "documentation": { "id": 26479, "nodeType": "StructuredDocumentation", "src": "3380:253:23", "text": " @dev Returns an Ethereum Signed Message, created from a `hash`. This\n replicates the behavior of the\n https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`]\n JSON-RPC method.\n See {recover}." }, "implemented": true, "kind": "function", "modifiers": [], "name": "toEthSignedMessageHash", "parameters": { "id": 26482, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26481, "mutability": "mutable", "name": "hash", "nodeType": "VariableDeclaration", "scope": 26495, "src": "3670:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26480, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3670:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "3669:14:23" }, "returnParameters": { "id": 26485, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 26484, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 26495, "src": "3707:7:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 26483, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "3707:7:23", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "3706:9:23" }, "scope": 26496, "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 26383, "nodeType": "StructuredDocumentation", "src": "66:205:23", "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, "linearizedBaseContracts": [ 26496 ], "name": "ECDSA", "scope": 26497 } ], "license": "MIT" }, "id": 23 }