{
    "Function": "_verifySig",
    "File": "contracts/Forwarder.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol",
        "node_modules/@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"
    ],
    "High-Level Calls": [
        "ECDSA"
    ],
    "Internal Calls": [
        "keccak256(bytes)",
        "keccak256(bytes)",
        "abi.encodePacked()",
        "require(bool,string)",
        "require(bool,string)",
        "_getEncoded"
    ],
    "Library Calls": [
        "recover"
    ],
    "Low-Level Calls": [],
    "Code": "function _verifySig(\n        ForwardRequest memory req,\n        bytes32 domainSeparator,\n        bytes32 requestTypeHash,\n        bytes memory suffixData,\n        bytes memory sig\n    ) internal view {\n        require(typeHashes[requestTypeHash], \"NGEUR Forwarder: invalid request typehash\");\n        bytes32 digest = keccak256(\n            abi.encodePacked(\"\\x19\\x01\", domainSeparator, keccak256(_getEncoded(req, requestTypeHash, suffixData)))\n        );\n        require(digest.recover(sig) == req.from, \"NGEUR Forwarder: signature mismatch\");\n    }"
}