private static TServerDHInnerData DeserializeResponse(TServerDHParamsOk serverDhParams, AesKeyData aesKeyData)
{
var answerWithHash = AES.DecryptAes(aesKeyData, serverDhParams.EncryptedAnswerAsBinary);
var answerWithHashBuffer = PooledByteBufferAllocator.Default.Buffer();
try
{
answerWithHashBuffer.WriteBytes(answerWithHash);
// var serverHashsum = answerWithHashBuffer.ToArray(20);
answerWithHashBuffer.SkipBytes(20);
var serverDhInnerData = (TServerDHInnerData)Serializer.Deserialize(answerWithHashBuffer);
// var clearAnswer = Serializer.Serialize(serverDhInnerData);
// var hashsum = SHA1Helper.ComputeHashsum(clearAnswer);
// Guard.That(serverHashsum).IsItemsEquals(hashsum);
return(serverDhInnerData);
}
finally
{
answerWithHashBuffer.SafeRelease();
}
}
private static TClientDHInnerData DeserializeRequest(RequestSetClientDHParams serverDhParams, AesKeyData aesKeyData)
{
var encryptedAnswer = serverDhParams.EncryptedDataAsBinary;
var answerWithHash = AES.DecryptAes(aesKeyData, encryptedAnswer);
var serverHashsum = answerWithHash.Take(20).ToArray();
var answer = answerWithHash.Skip(20).ToArray();
var answerBuffer = PooledByteBufferAllocator.Default.Buffer();
try
{
answerBuffer.WriteBytes(answer);
var clientDhInnerData = Serializer.Deserialize(answerBuffer).Is <TClientDHInnerData>();
return(clientDhInnerData);
}
finally
{
answerBuffer.Release();
}
}
private static RequestSetClientDHParams SerializeRequest(TClientDHInnerData clientDhInnerData, AesKeyData aesKeyData)
{
var dhInnerDataBuffer = Serializer.Serialize(clientDhInnerData);
byte[] innerData;
try
{
Serializer.Serialize(clientDhInnerData);
innerData = dhInnerDataBuffer.ToArray();
}
finally
{
dhInnerDataBuffer.SafeRelease();
}
var hashsum = Sha1Helper.ComputeHashsum(innerData);
var answerWithHash = hashsum.Concat(innerData).ToArray();
var encryptedAnswer = AES.EncryptAes(aesKeyData, answerWithHash);
return(new RequestSetClientDHParams
{
EncryptedDataAsBinary = encryptedAnswer,
Nonce = clientDhInnerData.Nonce,
ServerNonce = clientDhInnerData.ServerNonce
});
}
