void EncyrptAsyncBackgroundWorker(object sender, DoWorkEventArgs e)
{
DataForEnc data = (DataForEnc)e.Argument;
byte[] saltBytes = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
string cryptFile = data.OutputFile;
FileStream fsCrypt = new FileStream(cryptFile, FileMode.Append);
RijndaelManaged AES = new RijndaelManaged();
AES.KeySize = data.KeySize;
AES.BlockSize = data.BlockSize;
var key = new Rfc2898DeriveBytes(data.AES_KeyBytes, saltBytes, 1000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
AES.Padding = PaddingMode.Zeros;
AES.Mode = data.CipherMode != CipherMode.OFB ? data.CipherMode : CipherMode.CBC;
CryptoStream cs = new CryptoStream(fsCrypt,
AES.CreateEncryptor(),
CryptoStreamMode.Write);
FileStream fsIn = new FileStream(data.InputFile, FileMode.Open);
int encryptedData;
long lenStream = fsIn.Length;
sw.Start();
int prevVal = 0;
long i = 0;
for (; (encryptedData = fsIn.ReadByte()) != -1; i++)
{
cs.WriteByte((byte)encryptedData);
if (prevVal != unchecked ((int)(i * 100 / lenStream)))
{
prevVal = unchecked ((int)(i * 100 / lenStream));
backgroundWorker.ReportProgress(prevVal);
}
}
backgroundWorker.ReportProgress(100);
fsIn.Close();
cs.Close();
fsCrypt.Close();
}
public void testEncryptionFile()
{
DataForEnc data = new DataForEnc();
data.InputFile = AES_Configuration.encInFile;
data.OutputFile = AES_Configuration.encOutFile;
data.CipherMode = AES_Configuration.cipherMode;
data.KeySize = 128;
data.BlockSize = 128;
data.UsersCollection.Add("John", new UserData()
{
Name = "John", Passwd = Encoding.ASCII.GetBytes("asdf")
});
AES_AsyncEncryptionFile asyncEnc = new AES_AsyncEncryptionFile();
asyncEnc.backgroundWorker.RunWorkerAsync(data);
waitForEndBackgroundWorkder(asyncEnc);
Assert.IsTrue(File.Exists(AES_Configuration.encOutFile));
}
