SignerERC7913Upgradeable

Inherits: Initializable, AbstractSigner

*Implementation of {AbstractSigner} using https://eips.ethereum.org/EIPS/eip-7913[ERC-7913] signature verification. For {Account} usage, a {_setSigner} function is provided to set the ERC-7913 formatted {signer}. Doing so is easier for a factory, who is likely to use initializable clones of this contract. The signer is a bytes object that concatenates a verifier address and a key: verifier || key. Example of usage:

contract MyAccountERC7913 is Account, SignerERC7913, Initializable {
function initialize(bytes memory signer_) public initializer {
_setSigner(signer_);
}
function setSigner(bytes memory signer_) public onlyEntryPointOrSelf {
_setSigner(signer_);
}
}

IMPORTANT: Failing to call {_setSigner} either during construction (if used standalone) or during initialization (if used as a clone) may leave the signer either front-runnable or unusable.*

State Variables

SignerERC7913StorageLocation

bytes32 private constant SignerERC7913StorageLocation =
    0x170786af7cf7b78916dca5a937f25e3b9b70ae3faee6f0db68cda91b7e818e00;

Functions

_getSignerERC7913Storage

function _getSignerERC7913Storage() private pure returns (SignerERC7913Storage storage $);

__SignerERC7913_init

function __SignerERC7913_init(bytes memory signer_) internal onlyInitializing;

__SignerERC7913_init_unchained

function __SignerERC7913_init_unchained(bytes memory signer_) internal onlyInitializing;

signer

Return the ERC-7913 signer (i.e. verifier || key).

function signer() public view virtual returns (bytes memory);

_setSigner

Sets the signer (i.e. verifier || key) with an ERC-7913 formatted signer.

function _setSigner(bytes memory signer_) internal;

_rawSignatureValidation

Verifies a signature using SignatureChecker-isValidSignatureNow-bytes-bytes32-bytes- with {signer}, hash and signature.

function _rawSignatureValidation(bytes32 hash, bytes calldata signature)
    internal
    view
    virtual
    override
    returns (bool);

Structs

SignerERC7913Storage

Note: storage-location: erc7201:openzeppelin.storage.SignerERC7913

struct SignerERC7913Storage {
    bytes _signer;
}