private void button1_Click(object sender, EventArgs e)
{
SaveFileDialog dialog = new SaveFileDialog
{
AddExtension = true,
Filter = @".dat encrypted file|*.dat",
Title = @"Save your encrypted data to..."
};
if (!string.IsNullOrEmpty(m_szFilename))
{
dialog.InitialDirectory = m_szFilename;
}
else
{
dialog.InitialDirectory = Environment.CurrentDirectory;
}
if (dialog.ShowDialog() == DialogResult.OK &&
dialog.FileName != string.Empty)
{
FileStream fs = new FileStream(dialog.FileName, FileMode.Create);
byte[] data = Encoding.ASCII.GetBytes(input.Text);
SymmetricCryptoHandler symmetricCrypto = new SymmetricCryptoHandler(m_private);
byte[] encrypted = symmetricCrypto.Encrypt(data);
fs.Write(encrypted, 0, encrypted.Length);
fs.Close();
fs.Dispose();
fs = null;
}
}
private void OpenFile()
{
byte[] file = File.ReadAllBytes(m_szFilename);
SymmetricCryptoHandler symmetricCryptoHandler = new SymmetricCryptoHandler(m_private);
byte[] decrypt = symmetricCryptoHandler.Decrypt(file);
output.Text = input.Text = Encoding.ASCII.GetString(decrypt, 0, decrypt.Length);
input_TextChanged(null, null);
}
private void input_TextChanged(object sender, EventArgs e)
{
/*
* [AccountServer]
* IpAddress=127.0.0.1
* Port=9958
*/
byte[] data = Encoding.ASCII.GetBytes(input.Text);
SymmetricCryptoHandler symmetricCrypto = new SymmetricCryptoHandler(m_private);
byte[] encrypted = symmetricCrypto.Encrypt(data);
output.Text = Encoding.ASCII.GetString(encrypted);
label1.Text = $@"{input.TextLength}:{output.TextLength}";
}
