crypto.py 文件源码

def get_signer(self):
        """Gets an incremental verifier.

        Must call .update() on the verifier and then .finalize() to check.
        """
        hash_algorithm = hashes.SHA256()
        padding_algorithm = padding.PSS(mgf=padding.MGF1(hash_algorithm),
                                        salt_length=padding.PSS.MAX_LENGTH)

        padding_algorithm = padding.PKCS1v15()

        return self._value.signer(padding_algorithm, hash_algorithm)