public byte[] Encrypt(byte[] message, long nonce)
{
byte[] buffer = new byte[message.Length];
int ret = NativeLibsodium.crypto_stream_chacha20_xor(buffer, message, message.Length, BitConverter.GetBytes(nonce), Convert.FromBase64String(encryptionConfig.ChaChaEncryptionKey));
if (ret != 0)
{
throw new Exception("Error encrypting message.");
}
return(buffer);
}
public byte[] Decrypt(byte[] message, long nonce)
{
byte[] nonceByteArr = BitConverter.GetBytes(nonce);
byte[] key = Convert.FromBase64String(ChaChaEncryptionKey);
byte[] buffer = new byte[message.Length];
int ret = NativeLibsodium.crypto_stream_chacha20_xor(buffer, message, message.Length, nonceByteArr, key);
if (ret == 0)
{
return(buffer);
}
return(null);
}
public byte[] Decrypt(byte[] msg, long nonce)
{
byte[] nonceBytes = BitConverter.GetBytes(nonce);
byte[] decrypted = new byte[msg.Length];
int ret = NativeLibsodium.crypto_stream_chacha20_xor(decrypted, msg, msg.Length, nonceBytes, _ChaChaEncryptionKey);
if (ret != 0)
{
throw new Exception("Error derypting message.");
}
return(decrypted);
}