signature_helper.py 文件源码

def verify_data_with_publickey(public_key, data: bytes, signature: bytes, is_hash: bool=False) -> bool:
        """??? DATA ??

        :param public_key: ??? ???
        :param data: ?? ?? ??
        :param signature: ?? ???
        :param is_hash: ?? hashed ??(True/False
        :return: ?? ?? ??(True/False)
        """
        hash_algorithm = hashes.SHA256()
        if is_hash:
            hash_algorithm = utils.Prehashed(hash_algorithm)

        if isinstance(public_key, ec.EllipticCurvePublicKeyWithSerialization):
            try:
                public_key.verify(
                    signature=signature,
                    data=data,
                    signature_algorithm=ec.ECDSA(hash_algorithm)
                )
                return True
            except InvalidSignature:
                logging.debug("InvalidSignatureException_ECDSA")

        elif isinstance(public_key, rsa.RSAPublicKeyWithSerialization):
            try:
                public_key.verify(
                    signature,
                    data,
                    padding.PKCS1v15(),
                    hash_algorithm
                )
                return True
            except InvalidSignature:
                logging.debug("InvalidSignatureException_RSA")
        else:
            logging.debug("Unknown PublicKey Type : %s", type(public_key))

        return False