public string DecodeAndDecryptMessage(string msg)
{
//string jsonString = rsaManager.Decrypt(AuthenticateMessage(msg));
Message messageRecv = AuthenticateMessage(msg);
string decryptedMessage = rsaManager.Decrypt(messageRecv.KeyToDecipher);
KeyDecipher key = JsonConvert.DeserializeObject <KeyDecipher>(decryptedMessage);
ConnAesManager.SetKey(key.Key, key.IV);
string jsonString = ConnAesManager.DecryptStringFromBytes_Aes(JsonConvert.DeserializeObject <byte[]>(messageRecv.Cryptotext));
JsonFreshMessage jsonFreshMessage = JsonConvert.DeserializeObject <JsonFreshMessage>(jsonString);
VerifyNonce(jsonFreshMessage.Nonce);
return(jsonFreshMessage.Message);
}
public string JsonMessage(string msg)
{
//Refresh every message the keys
ConnAesManager.InitKey();
//Cipher content with the symmetric key
byte[] bytes = ConnAesManager.EncryptStringToBytes_Aes(msg);
string cipherText = JsonConvert.SerializeObject(bytes);
//Cipher the symmetric key with pub key
KeyDecipher keyDecipher = new KeyDecipher(ConnAesManager.Key, ConnAesManager.InitVect);
string KeyDecipher = JsonConvert.SerializeObject(keyDecipher);
string cipheredKey = rsaManager.Encrypt(KeyDecipher);
//The cipherText and cipherKey
Message message = new Message(cipherText, cipheredKey);
//Digest the message
return(JsonConvert.SerializeObject(new JsonCryptoDigestMessage(JsonConvert.SerializeObject(message), hmacManager.Encode(JsonConvert.SerializeObject(message)))));
}
