public static string DecryptString(Stream stream, byte[] bytKey, byte[] bytVector)
{
SymmetricCryptography <TripleDESCryptoServiceProvider> sc = new SymmetricCryptography <TripleDESCryptoServiceProvider>(bytKey, bytVector);
CryptoStream cStream = new CryptoStream(stream, sc._provider.CreateDecryptor(sc.Key, sc.IV), CryptoStreamMode.Read);
byte[] bytLicense = null;
int bufferLen = 4096;
byte[] buffer = new byte[bufferLen];
int bytesRead;
int pos = 0;
int totBytRead = 0;
do
{
// read a chunk of data from the input file
bytesRead = cStream.Read(buffer, 0, bufferLen);
totBytRead += bytesRead;
if (bytesRead > 0)
{
byte[] aux = bytLicense;
bytLicense = new byte[totBytRead];
if (aux != null)
{
aux.CopyTo(bytLicense, 0);
}
Array.Copy(buffer, 0, bytLicense, pos, bytesRead);
pos += bytesRead;
}
}while (bytesRead != 0);
cStream.Close();
cStream.Dispose();
return(ASCIIEncoding.ASCII.GetString(bytLicense));
}
public static string DecryptString(string s, byte[] bytKey, byte[] bytVector)
{
SymmetricCryptography <TripleDESCryptoServiceProvider> sc = new SymmetricCryptography <TripleDESCryptoServiceProvider>(bytKey, bytVector);
return(sc.Decrypt(s));
}
