/// <summary>
/// Runs a Kerberos implemented RC4 Encryption
/// </summary>
/// <param name="xConfounder">Outputs new Confounder</param>
/// <param name="xPayload">Outputs the payload</param>
/// <param name="x">RC4 Reference</param>
/// <returns></returns>
public static byte[] KerberosEncrypt(this RC4 x, ref byte[] xConfounder, ref byte[] xPayload)
{
var xIn = new List <byte>();
xIn.AddRange(xConfounder);
xIn.AddRange(xPayload);
return(x.RunAlgorithm(xIn.ToArray()));
}
/// <summary>
/// Generates a new counfounder of your choice
/// </summary>
/// <param name="x"></param>
/// <param name="ConLen"></param>
/// <returns></returns>
public static byte[] NewConfounder(this RC4 x, long ConLen)
{
var xReturn = new byte[ConLen];
var xRand = new Random();
for (var i = 0; i < 8; i++)
{
xReturn[i] = (byte)xRand.Next(0, 0xFF);
}
return(xReturn);
}
/// <summary>
/// Runs a Kerberos implemented RC4 decryption
/// </summary>
/// <param name="xConfounder">The confounder input</param>
/// <param name="xPayload">The payload input</param>
/// <param name="x">RC4 reference</param>
/// <param name="xData">Data to be decrypted</param>
/// <param name="xConLen">Length of the Confounder</param>
/// <returns></returns>
public static bool KerberosDecrypt(this RC4 x, byte[] xData, out byte[] xConfounder, int xConLen, out byte[] xPayload)
{
xPayload = new byte[0];
xConfounder = new byte[0];
try
{
var xOut = new DJsIO(x.RunAlgorithm(xData), true)
{
Position = 0
};
xConfounder = xOut.ReadBytes(xConLen);
xPayload = xOut.ReadBytes(xData.Length - xConLen);
xOut.Dispose();
}
catch { return(false); }
return(true);
}
/// <summary>
/// Runs an RC4 encryption with a specified key
/// </summary>
/// <param name="xKey"></param>
/// <param name="xConfounder"></param>
/// <param name="xPayload"></param>
/// <returns></returns>
public static byte[] RunKerberosEncrypt(byte[] xKey, ref byte[] xConfounder, ref byte[] xPayload)
{
var xrc4 = new RC4(xKey);
return(xrc4.KerberosEncrypt(ref xConfounder, ref xPayload));
}
/// <summary>
/// Runs a Kerberos RC4 encryption on the specified data
/// </summary>
/// <param name="xKey">Key input</param>
/// <param name="xConfounder">outputs the confounder</param>
/// <param name="xPayload">Outputs the payload</param>
/// <param name="xConLen">Confounder Length</param>
/// <param name="xData">Outputs the decrypted data</param>
/// <returns></returns>
public static bool RunKerberosDecrypt(byte[] xKey, byte[] xData, out byte[] xConfounder, int xConLen, out byte[] xPayload)
{
var xrc4 = new RC4(xKey);
return(xrc4.KerberosDecrypt(xData, out xConfounder, xConLen, out xPayload));
}
/// <summary>
/// Runs an RC4 on the specified data using the specified key
/// </summary>
/// <param name="xKey"></param>
/// <param name="xData"></param>
/// <returns></returns>
public static byte[] RunAlgorithm(byte[] xKey, byte[] xData)
{
var xrc4 = new RC4(xKey);
return(xrc4.RunAlgorithm(xData));
}
