public Message AuthenticateMessage(string message)
{
HMACManager DigestKey = new HMACManager(Helper.GetDigestKey());
JsonCryptoDigestMessage jsonCryptoDigestMessage = JsonConvert.DeserializeObject <JsonCryptoDigestMessage>(message);
if (!jsonCryptoDigestMessage.Digest.Equals(DigestKey.Encode(jsonCryptoDigestMessage.Message)))
{
throw new Exception("Message was corrupted!\n");
}
return(JsonConvert.DeserializeObject <Message>(jsonCryptoDigestMessage.Message));
}
public string JsonMessage(string msg)
{
RSAManager RSAKeys = new RSAManager(Helper.GetPcPublicKey());
AesManager aesManager = new AesManager();
//Cipher content with the symmetric key
byte[] bytes = aesManager.EncryptStringToBytes_Aes(msg);
string cipherText = JsonConvert.SerializeObject(bytes);
//Cipher the symmetric key with pub key
KeyDecipher keyDecipher = new KeyDecipher(aesManager.Key, aesManager.InitVect);
string KeyDecipher = JsonConvert.SerializeObject(keyDecipher);
string cipheredKey = RSAKeys.Encrypt(KeyDecipher);
//The cipherText and cipherKey
Message message = new Message(cipherText, cipheredKey);
string Message = JsonConvert.SerializeObject(message);
//Digest the message
HMACManager DigestKey = new HMACManager(Helper.GetDigestKey());
return(JsonConvert.SerializeObject(new JsonCryptoDigestMessage(Message, DigestKey.Encode(Message))));
}