public void Can_decrypt_auth_eip8_message_with_additional_elements()
{
Hex hex = "01b8044c6c312173685d1edd268aa95e1d495474c6959bcdd10067ba4c9013df9e40ff45f5bfd6f7" +
"2471f93a91b493f8e00abc4b80f682973de715d77ba3a005a242eb859f9a211d93a347fa64b597bf" +
"280a6b88e26299cf263b01b8dfdb712278464fd1c25840b995e84d367d743f66c0e54a586725b7bb" +
"f12acca27170ae3283c1073adda4b6d79f27656993aefccf16e0d0409fe07db2dc398a1b7e8ee93b" +
"cd181485fd332f381d6a050fba4c7641a5112ac1b0b61168d20f01b479e19adf7fdbfa0905f63352" +
"bfc7e23cf3357657455119d879c78d3cf8c8c06375f3f7d4861aa02a122467e069acaf513025ff19" +
"6641f6d2810ce493f51bee9c966b15c5043505350392b57645385a18c78f14669cc4d960446c1757" +
"1b7c5d725021babbcd786957f3d17089c084907bda22c2b2675b4378b114c601d858802a55345a15" +
"116bc61da4193996187ed70d16730e9ae6b3bb8787ebcaea1871d850997ddc08b4f4ea668fbf3740" +
"7ac044b55be0908ecb94d4ed172ece66fd31bfdadf2b97a8bc690163ee11f5b575a4b44e36e2bfb2" +
"f0fce91676fd64c7773bac6a003f481fddd0bae0a1f31aa27504e2a533af4cef3b623f4791b2cca6" +
"d490";
byte[] allBytes = hex;
byte[] sizeBytes = allBytes.Slice(0, 2);
int size = sizeBytes.ToInt32();
byte[] deciphered = _eciesCipher.Decrypt(NetTestVectors.StaticKeyB, allBytes.Slice(2, size), sizeBytes);
AuthEip8Message authMessage = _messageSerializationService.Deserialize <AuthEip8Message>(deciphered);
Assert.AreEqual(authMessage.PublicKey, NetTestVectors.StaticKeyA.PublicKey);
Assert.AreEqual(authMessage.Nonce, NetTestVectors.NonceA);
Assert.AreEqual(authMessage.Version, 4);
Assert.NotNull(authMessage.Signature);
}
public void Can_decrypt_auth_eip8_message()
{
byte[] allBytes = Bytes.FromHexString("01b304ab7578555167be8154d5cc456f567d5ba302662433674222360f08d5f1534499d3678b513b" +
"0fca474f3a514b18e75683032eb63fccb16c156dc6eb2c0b1593f0d84ac74f6e475f1b8d56116b84" +
"9634a8c458705bf83a626ea0384d4d7341aae591fae42ce6bd5c850bfe0b999a694a49bbbaf3ef6c" +
"da61110601d3b4c02ab6c30437257a6e0117792631a4b47c1d52fc0f8f89caadeb7d02770bf999cc" +
"147d2df3b62e1ffb2c9d8c125a3984865356266bca11ce7d3a688663a51d82defaa8aad69da39ab6" +
"d5470e81ec5f2a7a47fb865ff7cca21516f9299a07b1bc63ba56c7a1a892112841ca44b6e0034dee" +
"70c9adabc15d76a54f443593fafdc3b27af8059703f88928e199cb122362a4b35f62386da7caad09" +
"c001edaeb5f8a06d2b26fb6cb93c52a9fca51853b68193916982358fe1e5369e249875bb8d0d0ec3" +
"6f917bc5e1eafd5896d46bd61ff23f1a863a8a8dcd54c7b109b771c8e61ec9c8908c733c0263440e" +
"2aa067241aaa433f0bb053c7b31a838504b148f570c0ad62837129e547678c5190341e4f1693956c" +
"3bf7678318e2d5b5340c9e488eefea198576344afbdf66db5f51204a6961a63ce072c8926c");
byte[] sizeBytes = allBytes.Slice(0, 2);
int size = sizeBytes.ToInt32();
ICryptoRandom cryptoRandom = new CryptoRandom();
EciesCipher cipher = new EciesCipher(cryptoRandom);
byte[] deciphered = cipher.Decrypt(NetTestVectors.StaticKeyB, allBytes.Slice(2, size), sizeBytes);
AuthEip8Message authMessage = _messageSerializationService.Deserialize <AuthEip8Message>(deciphered);
Assert.AreEqual(authMessage.PublicKey, NetTestVectors.StaticKeyA.PublicKey);
Assert.AreEqual(authMessage.Nonce, NetTestVectors.NonceA);
Assert.AreEqual(authMessage.Version, 4);
Assert.NotNull(authMessage.Signature);
byte[] data = _messageSerializationService.Serialize(authMessage);
Array.Resize(ref data, deciphered.Length);
//TODO: check 169
Assert.AreEqual(deciphered.Slice(0, 169), data.Slice(0, 169), "serialization");
}
public Packet Auth(PublicKey remoteNodeId, EncryptionHandshake handshake)
{
handshake.RemoteNodeId = remoteNodeId;
handshake.InitiatorNonce = _cryptoRandom.GenerateRandomBytes(32);
handshake.EphemeralPrivateKey = _ephemeralGenerator.Generate();
byte[] staticSharedSecret = Proxy.EcdhSerialized(remoteNodeId.Bytes, _privateKey.KeyBytes);
byte[] forSigning = staticSharedSecret.Xor(handshake.InitiatorNonce);
AuthEip8Message authMessage = new AuthEip8Message();
authMessage.Nonce = handshake.InitiatorNonce;
authMessage.PublicKey = _privateKey.PublicKey;
authMessage.Signature = _ecdsa.Sign(handshake.EphemeralPrivateKey, new Keccak(forSigning));
byte[] authData = _messageSerializationService.Serialize(authMessage);
int size = authData.Length + 32 + 16 + 65; // data + MAC + IV + pub
byte[] sizeBytes = size.ToBigEndianByteArray().Slice(2, 2);
byte[] packetData = _eciesCipher.Encrypt(
remoteNodeId,
authData,
sizeBytes);
handshake.AuthPacket = new Packet(Bytes.Concat(sizeBytes, packetData));
return(handshake.AuthPacket);
}
private void TestEncodeDecode(IEthereumEcdsa ecdsa)
{
AuthEip8Message authMessage = new AuthEip8Message();
authMessage.Nonce = new byte[AuthMessageSerializer.NonceLength]; // sic!
authMessage.Signature = ecdsa.Sign(_privateKey, Keccak.Compute("anything"));
authMessage.PublicKey = _privateKey.PublicKey;
_random.NextBytes(authMessage.Nonce);
byte[] data = _serializer.Serialize(authMessage);
AuthEip8Message after = _serializer.Deserialize(data);
Assert.AreEqual(authMessage.Signature, after.Signature);
Assert.AreEqual(authMessage.PublicKey, after.PublicKey);
Assert.True(Bytes.AreEqual(authMessage.Nonce, after.Nonce));
Assert.AreEqual(authMessage.Version, after.Version);
}
