ecdsakey.py 文件源码

def verify_ssh_sig(self, data, msg):
        if msg.get_text() != self.ecdsa_curve.key_format_identifier:
            return False
        sig = msg.get_binary()
        sigR, sigS = self._sigdecode(sig)
        signature = encode_dss_signature(sigR, sigS)

        verifier = self.verifying_key.verifier(
            signature, ec.ECDSA(self.ecdsa_curve.hash_object())
        )
        verifier.update(data)
        try:
            verifier.verify()
        except InvalidSignature:
            return False
        else:
            return True