public static byte[] Sign(byte[] message, byte[] key)
{
if (key == null || key.Length != 64)
{
throw new KeyOutOfRangeException("key", (key == null) ? 0 : key.Length, string.Format("key must be {0} bytes in length.", 64));
}
byte[] array = new byte[message.Length + 64];
long num = 0L;
SodiumLibrary.crypto_sign(array, ref num, message, (long)message.Length, key);
byte[] array2 = new byte[num];
Array.Copy(array, 0L, array2, 0L, num);
return(array2);
}
