/// <summary>
/// This method handles the encrypt asynchronus result
/// when a file encryption is requested.
/// </summary>
/// <param name="ar">The current asynchronus result.</param>
private void EncryptFile(IAsyncResult ar)
{
// Get the async state object.
AsynchronousAdvancedTripleDES state = (AsynchronousAdvancedTripleDES)ar.AsyncState;
bool encrypt = false;
try
{
// End the encrypt async and set
// the cross-thread result.
encrypt = state.EndEncryptFile(ar);
}
catch (Exception ex)
{
_errorMessage = ex.Message;
}
SetEncrypting(encrypt);
}
/// <summary>
/// Cryto execute.
/// </summary>
/// <param name="decryptFile">The decrypt file.</param>
/// <param name="encryptFile">The encrypt file.</param>
private void CryptExecuteEx(string decryptFile, string encryptFile)
{
// Create a new async advanced cryptography
// class, for file encryption.
AsynchronousAdvancedTripleDES asyncCrypt = new AsynchronousAdvancedTripleDES();
// Set the execute stop button.
ExecuteStopCrypt();
try
{
// If no decryption file set
// then throw and exception.
if (String.IsNullOrEmpty(txtDecryptedLocalFile.Text.Trim()))
{
throw new Exception("Decrypt local file not specified");
}
// If no decryption file set
// then throw and exception.
if (String.IsNullOrEmpty(txtEncryptLocalFile.Text.Trim()))
{
throw new Exception("Encrypt local file not specified");
}
// Get the cryptography operation.
switch (_cryto)
{
case CryptographyType.Encrypt:
// Encrypt the current file to the specified file.
// If no password has been specified then encrypt
// with no password.
if (String.IsNullOrEmpty(txtCryptPassword.Text.Trim()))
{
asyncCrypt.BeginEncryptFile(txtDecryptedLocalFile.Text.Trim(), txtEncryptLocalFile.Text.Trim(),
new AsyncCallback(EncryptFile), asyncCrypt);
}
else
{
// Encrypt with the password specified.
asyncCrypt.BeginEncryptFile(txtDecryptedLocalFile.Text.Trim(), txtEncryptLocalFile.Text.Trim(),
txtCryptPassword.Text.Trim(), new AsyncCallback(EncryptFile), asyncCrypt);
}
break;
case CryptographyType.Decrypt:
// Decrypt the current file to the specified file.
// If no password has been specified then decrypt
// with no password.
if (String.IsNullOrEmpty(txtCryptPassword.Text.Trim()))
{
asyncCrypt.BeginDecryptFile(txtDecryptedLocalFile.Text.Trim(), txtEncryptLocalFile.Text.Trim(),
new AsyncCallback(DecryptFile), asyncCrypt);
}
else
{
// Decrypt with the password specified.
asyncCrypt.BeginDecryptFile(txtDecryptedLocalFile.Text.Trim(), txtEncryptLocalFile.Text.Trim(),
txtCryptPassword.Text.Trim(), new AsyncCallback(DecryptFile), asyncCrypt);
}
break;
}
}
catch (Exception ex)
{
// Set the execution stop controls.
ExecuteStopCrypt();
// On error trigger the
// error event handler.
if (OnError != null)
{
OnError(this, new ClientCommandArgs("ERROR", ex.Message, 000));
}
}
}
