/// <summary>
/// Encryptes input with secret box.
/// </summary>
public static byte[] SecretBox(byte[] Input, byte[] Nonce, byte[] SecretKey)
{
byte[] C = new byte[Input.Length + 32];
Array.Copy(Input, 0, C, 32, Input.Length);
Xsalsa20Poly1305.CryptoSecretbox(C, C, C.Length, Nonce, SecretKey);
byte[] Output = new byte[C.Length - 16];
Array.Copy(C, 16, Output, 0, Output.Length);
return(Output);
}
/// <summary>
/// Decyptes input with secret box.
/// </summary>
public static byte[] SecretBoxOpen(byte[] Input, byte[] Nonce, byte[] SecretKey)
{
if (Input.Length >= 16)
{
byte[] C = new byte[Input.Length + 16];
Array.Copy(Input, 0, C, 16, Input.Length);
if (Xsalsa20Poly1305.CryptoSecretboxOpen(C, C, C.Length, Nonce, SecretKey) == 0)
{
byte[] Output = new byte[C.Length - 32];
Array.Copy(C, 32, Output, 0, Output.Length);
return(Output);
}
}
Logging.Warning(typeof(PepperCrypto), "Unable to open secret box.");
return(null);
}
