public byte[] Crypt(byte[] Source)
{
using (RSACryptoServiceProvider R = new RSACryptoServiceProvider())
{
R.PersistKeyInCsp = false;
R.ImportParameters(Params);
using (RijndaelManaged RM = new RijndaelManaged())
{
RM.GenerateIV();
RM.GenerateKey();
byte[] EIV = R.Encrypt(RM.IV, true);
byte[] EPW = R.Encrypt(RM.Key, true);
using (RijndaelManagedTransform Enc = (RijndaelManagedTransform)RM.CreateEncryptor())
{
using (MemoryStream MS = new MemoryStream())
{
using (BinaryWriter BW = new BinaryWriter(MS))
{
WB(BW, EIV);
WB(BW, EPW);
BW.Flush();
using (CryptoStream CS = new CryptoStream(MS, Enc, CryptoStreamMode.Write))
{
CS.Write(Source, 0, Source.Length);
CS.FlushFinalBlock();
}
return(MS.ToArray());
}
}
}
}
}
}
public byte[] Decrypt(byte[] Data)
{
if (!HasPrivate)
{
throw new Exception("Can't decrypt without private key!");
}
using (RSACryptoServiceProvider R = new RSACryptoServiceProvider())
{
R.PersistKeyInCsp = false;
R.ImportParameters(Params);
using (RijndaelManaged RM = new RijndaelManaged())
{
using (MemoryStream MS = new MemoryStream(Data, false))
{
using (BinaryReader BR = new BinaryReader(MS))
{
RM.IV = R.Decrypt(BR.ReadBytes(BR.ReadInt32()), true);
RM.Key = R.Decrypt(BR.ReadBytes(BR.ReadInt32()), true);
using (RijndaelManagedTransform Dec = (RijndaelManagedTransform)RM.CreateDecryptor())
{
using (CryptoStream CS = new CryptoStream(MS, Dec, CryptoStreamMode.Read))
{
return(CS.ReadToEnd());
}
}
}
}
}
}
}
public static string Decrypt(string text)
{
if (string.IsNullOrEmpty(text))
{
return(string.Empty);
}
string result = string.Empty;
List <byte> encryptedBytes = new List <byte>(Convert.FromBase64String(text));
byte[] iv = encryptedBytes.GetRange(3, 16).ToArray();
encryptedBytes.RemoveRange(3, 16);
byte[] key = encryptedBytes.GetRange(2, 32).ToArray();
encryptedBytes.RemoveRange(2, 32);
int length = encryptedBytes.Count;
byte[] decryptedBytes = new byte[length];
using (RijndaelManaged provider = new RijndaelManaged()) {
using (MemoryStream memoryStream = new MemoryStream(encryptedBytes.ToArray())) {
encryptedBytes.Clear();
using (RijndaelManagedTransform transform = provider.CreateDecryptor((byte[])key.Clone(), (byte[])iv.Clone()) as RijndaelManagedTransform) {
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, transform, CryptoStreamMode.Read)) {
cryptoStream.Read(decryptedBytes, 0, length);
result = Encoding.ASCII.GetString(decryptedBytes).Trim(new char[] { '\0' });
result = result.Replace("567@vcxz_", string.Empty);
result = result.Replace("=C#I$Th3L4nG", string.Empty);
}
}
}
}
return(result);
}
public static string Encrypt(string text)
{
if (string.IsNullOrEmpty(text))
{
return(string.Empty);
}
string result = string.Empty;
text = string.Format("567@vcxz_{0}=C#I$Th3L4nG", text);
byte[] encodedBytes = Encoding.ASCII.GetBytes(text);
int length = encodedBytes.Length;
using (RijndaelManaged provider = new RijndaelManaged()) {
using (RijndaelManagedTransform transform = provider.CreateEncryptor() as RijndaelManagedTransform) {
using (MemoryStream memoryStream = new MemoryStream(length)) {
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, transform, CryptoStreamMode.Write)) {
cryptoStream.Write(encodedBytes, 0, length);
cryptoStream.FlushFinalBlock();
List <byte> encryptedBytes = new List <byte>();
encryptedBytes.AddRange(memoryStream.ToArray());
encryptedBytes.InsertRange(2, (byte[])provider.Key.Clone());
encryptedBytes.InsertRange(3, (byte[])provider.IV.Clone());
result = Convert.ToBase64String(encryptedBytes.ToArray());
encryptedBytes.Clear();
};
};
};
}
return(result);
}
/// <summary>
/// Extends TransformFinalBlock so that buffer offset of 0 and call to Array.Length are not needed.
/// <example>
/// rijndaelmanagedtransform.TransformFinalBlock(inputBuffer);
/// </example>
/// </summary>
public static Byte[] TransformFinalBlock(this RijndaelManagedTransform rijndaelmanagedtransform, Byte[] inputBuffer)
{
if (rijndaelmanagedtransform == null)
{
throw new ArgumentNullException("rijndaelmanagedtransform");
}
if (inputBuffer == null)
{
throw new ArgumentNullException("inputBuffer");
}
return(rijndaelmanagedtransform.TransformFinalBlock(inputBuffer, 0, inputBuffer.Length));
}
/// <summary>
/// Extends TransformBlock so that buffer offset of 0 and call to Array.Length are not needed.
/// <example>
/// rijndaelmanagedtransform.TransformBlock(inputBuffer, outputBuffer, outputOffset);
/// </example>
/// </summary>
public static Int32 TransformBlock(this RijndaelManagedTransform rijndaelmanagedtransform, Byte[] inputBuffer, Byte[] outputBuffer, Int32 outputOffset)
{
if (rijndaelmanagedtransform == null)
{
throw new ArgumentNullException("rijndaelmanagedtransform");
}
if (inputBuffer == null)
{
throw new ArgumentNullException("inputBuffer");
}
return(rijndaelmanagedtransform.TransformBlock(inputBuffer, 0, inputBuffer.Length, outputBuffer, outputOffset));
}
