private void btnCrypt_Click(object sender, EventArgs e)
{
if (tbEncodeFile.Text == "")
{
tbEncodeFile.Text = tbSorceFile.Text + ".encode";
}
PermCounter Counter = new PermCounter();
Counter.Start();
DESCrypt.Encode(tbSorceFile.Text, tbEncodeFile.Text, UInt64.Parse(tbKey.Text));
tbEncodeTime.Text = Counter.Finish().ToString("F03");
MessageBox.Show("File successfully encoded");
}
private void btnDecrypt_Click(object sender, EventArgs e)
{
if (tbDecodeFile.Text == "")
{
string str = tbEncodeFile.Text;
int ind1 = str.LastIndexOf('.');
int ind2 = str.LastIndexOf('.', ind1 - 1);
tbDecodeFile.Text = tbEncodeFile.Text + str.Substring(ind2, ind1 - ind2);
}
PermCounter Counter = new PermCounter();
Counter.Start();
DESCrypt.Decode(tbEncodeFile.Text, tbDecodeFile.Text, UInt64.Parse(tbKey.Text));
tbDecodeTime.Text = Counter.Finish().ToString("F03");
StreamReader Reader = new StreamReader(tbSorceFile.Text);
byte[] OrigArray = new byte[Reader.BaseStream.Length];
Reader.BaseStream.Read(OrigArray, 0, (int)Reader.BaseStream.Length);
Reader.Close();
Reader = new StreamReader(tbDecodeFile.Text);
byte[] DecodeArray = new byte[Reader.BaseStream.Length];
Reader.BaseStream.Read(DecodeArray, 0, (int)Reader.BaseStream.Length);
Reader.Close();
OrigArray = SHA1.Create().ComputeHash(OrigArray);
DecodeArray = SHA1.Create().ComputeHash(DecodeArray);
if (OrigArray.SequenceEqual(DecodeArray))
{
MessageBox.Show("Original and decoded files identical!!! Decoding success");
}
else
{
MessageBox.Show("Original and decoded files are not identical. Decoding fail");
}
}