private static byte[] EncryptEx(byte[] data, string pass)
{
byte[] result;
if (data == null || pass == null)
{
result = null;
}
else
{
byte[] array = new byte[data.Length];
long num = 0L;
long num2 = 0L;
byte[] key = RC4Encrypt.GetKey(RC4Encrypt.Encode.GetBytes(pass), 256);
for (long num3 = 0L; num3 < (long)data.Length; num3 += 1L)
{
num = (num + 1L) % (long)key.Length;
num2 = (num2 + (long)((ulong)key[(int)checked ((System.IntPtr)num)])) % (long)key.Length;
checked
{
byte b = key[(int)((System.IntPtr)num)];
key[(int)((System.IntPtr)num)] = key[(int)((System.IntPtr)num2)];
key[(int)((System.IntPtr)num2)] = b;
byte b2 = data[(int)((System.IntPtr)num3)];
byte b3 = key[(int)unchecked (key[(int)checked ((System.IntPtr)num)] + key[(int)checked ((System.IntPtr)num2)]) % key.Length];
array[(int)((System.IntPtr)num3)] = (byte)checked (b2 ^ b3);
}
}
result = array;
}
return(result);
}
public static string Encrypt(string data, string pass, RC4Encrypt.EncoderMode em)
{
string result;
if (data == null || pass == null)
{
result = null;
}
else
{
if (em == RC4Encrypt.EncoderMode.Base64Encoder)
{
result = System.Convert.ToBase64String(RC4Encrypt.EncryptEx(RC4Encrypt.Encode.GetBytes(data), pass));
}
else
{
result = RC4Encrypt.ByteToHex(RC4Encrypt.EncryptEx(RC4Encrypt.Encode.GetBytes(data), pass));
}
}
return(result);
}
public static string Decrypt(string data, string pass, RC4Encrypt.EncoderMode em)
{
string result;
if (data == null || pass == null)
{
result = null;
}
else
{
if (em == RC4Encrypt.EncoderMode.Base64Encoder)
{
result = RC4Encrypt.Encode.GetString(RC4Encrypt.DecryptEx(System.Convert.FromBase64String(data), pass));
}
else
{
result = RC4Encrypt.Encode.GetString(RC4Encrypt.DecryptEx(RC4Encrypt.HexToByte(data), pass));
}
}
return(result);
}
public static string Decrypt(string data, string pass)
{
return(RC4Encrypt.Decrypt(data, pass, RC4Encrypt.EncoderMode.Base64Encoder));
}
private static byte[] DecryptEx(byte[] data, string pass)
{
return(RC4Encrypt.EncryptEx(data, pass));
}