ECDSA-I.sol

Note

Split reference

This reference file was too long so it is split into multiple chunks. This is chunk number I.

This Solidity file defines a library (ECDSA) for operations related to the Elliptic Curve Digital Signature Algorithm (ECDSA). This library is useful for verifying that a message was signed by the holder of the private keys of a given address. It provides functions for signature recovery, error handling, and creating Ethereum signed messages.

ECDSA

A library providing Elliptic Curve Digital Signature Algorithm (ECDSA) operations.

Errors

InvalidSignature: The provided signature is invalid.
InvalidSignatureLength: The length of the provided signature is invalid.
InvalidSignatureS: The 's' value in the provided signature is invalid.

RecoverError

(NoError | InvalidSignature | InvalidSignatureLength | InvalidSignatureS | InvalidSignatureV): Enumeration of possible recover errors.

tryRecover

tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError)

Tries to recover the signer address from a signature.

Parameters

hash bytes32: The hashed message that was signed.
signature bytes: The signature to recover from.

Return Values

tuple: The address that signed the message and any error that occurred.

recover

recover(bytes32 hash, bytes memory signature) internal pure returns (address)

Recovers the signer address from a signature.

Parameters

hash bytes32: The hashed message that was signed.
signature bytes: The signature to recover from.

Return Values

address: The address that signed the message.

toEthSignedMessageHash

toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32)

Returns an Ethereum Signed Message, created from a hash.

Parameters

hash bytes32: The hash to create the Ethereum Signed Message from.

Return Values

bytes32: The Ethereum Signed Message.