public static DetachedBox CreateDetached(byte[] message, byte[] nonce, byte[] key)
{
if (key == null || key.Length != 32)
{
throw new KeyOutOfRangeException("key", (key == null) ? 0 : key.Length, string.Format("key must be {0} bytes in length.", 32));
}
if (nonce == null || nonce.Length != 24)
{
throw new NonceOutOfRangeException("nonce", (nonce == null) ? 0 : nonce.Length, string.Format("nonce must be {0} bytes in length.", 24));
}
byte[] array = new byte[message.Length];
byte[] mac = new byte[16];
if (SodiumLibrary.crypto_secretbox_detached(array, mac, message, (long)message.Length, nonce, key) != 0)
{
throw new CryptographicException("Failed to create detached SecretBox");
}
return(new DetachedBox(array, mac));
}
