def test_verify_invalid_pubkey(self): ''' pubkey must be correct kind of object ''' priv, pub = ed25519.create_signing_keypair() with self.assertRaises(ValueError) as ctx: ed25519.verify_signature(object(), b"signature", b"data") self.assertIn("must be an Ed25519PublicKey", str(ctx.exception))
def test_signature_data_not_bytes(self): ''' signed data must be bytes ''' priv, pub = ed25519.create_signing_keypair() with self.assertRaises(ValueError) as ctx: ed25519.verify_signature(pub, b"signature", u"not bytes") self.assertIn("must be bytes", str(ctx.exception))
def unsign_from_foolscap(ann_t): (msg, sig_vs, claimed_key_vs) = ann_t if not sig_vs or not claimed_key_vs: raise UnknownKeyError("only signed announcements recognized") if not sig_vs.startswith(b"v0-"): raise UnknownKeyError("only v0- signatures recognized") if not claimed_key_vs.startswith(b"v0-"): raise UnknownKeyError("only v0- keys recognized") claimed_key = ed25519.verifying_key_from_string(b"pub-" + claimed_key_vs) sig_bytes = base32.a2b(remove_prefix(sig_vs, b"v0-")) ed25519.verify_signature(claimed_key, sig_bytes, msg) key_vs = claimed_key_vs ann = json.loads(msg.decode("utf-8")) return (ann, key_vs)
def match(self, other): """ Match a private key which is the same as the private key in the node at ``self.basedir``. :param other: A signing key (aka "private key") from ``allmydata.crypto.ed25519``. This is the key to check against the node's key. :return Mismatch: If the keys don't match. """ config = read_config(self.basedir, u"tub.port") privkey_bytes = config.get_private_config("node.privkey") private_key = ed25519.signing_keypair_from_string(privkey_bytes)[0] signature = ed25519.sign_data(private_key, b"") other_public_key = ed25519.verifying_key_from_signing_key(other) try: ed25519.verify_signature(other_public_key, signature, b"") except error.BadSignature: return Mismatch("The signature did not verify.")
def test_decode_ed15519_keypair(self): ''' Created using the old code: from allmydata.util.keyutil import make_keypair, parse_privkey, parse_pubkey test_data = b'test' priv_str, pub_str = make_keypair() priv, _ = parse_privkey(priv_str) pub = parse_pubkey(pub_str) sig = priv.sign(test_data) pub.verify(sig, test_data) This simply checks that keys and signatures generated using the old code are still valid using the new code. ''' priv_str = b'priv-v0-lqcj746bqa4npkb6zpyc6esd74x3bl6mbcjgqend7cvtgmcpawhq' pub_str = b'pub-v0-yzpqin3of3ep363lwzxwpvgai3ps43dao46k2jds5kw5ohhpcwhq' test_data = b'test' sig = ( b'\xde\x0e\xd6\xe2\xf5\x03]8\xfe\xa71\xad\xb4g\x03\x11\x81\x8b\x08\xffz\xf4K\xa0' b'\x86 ier!\xe8\xe5#*\x9d\x8c\x0bI\x02\xd90\x0e7\xbeW\xbf\xa3\xfe\xc1\x1c\xf5+\xe9)' b'\xa3\xde\xc9\xc6s\xc9\x90\xf7x\x08') private_key, derived_public_key = ed25519.signing_keypair_from_string( priv_str) public_key = ed25519.verifying_key_from_string(pub_str) self.assertEqual( ed25519.string_from_verifying_key(public_key), ed25519.string_from_verifying_key(derived_public_key), ) new_sig = ed25519.sign_data(private_key, test_data) self.assertEqual(new_sig, sig) ed25519.verify_signature(public_key, new_sig, test_data) ed25519.verify_signature(derived_public_key, new_sig, test_data) ed25519.verify_signature(public_key, sig, test_data) ed25519.verify_signature(derived_public_key, sig, test_data)