public void DecryptBlockDecryptsBlockBackToOriginalPlainText()
{
const string originalMessage = "This is my message to encrypt.";
string encrypted = BlockEncrypter.EncryptBlock(originalMessage, Encoding.ASCII.GetBytes("Pa55w0rd"));
string decrypted = BlockEncrypter.DecryptBlock(encrypted, Encoding.ASCII.GetBytes("Pa55w0rd"));
Assert.AreEqual(originalMessage, decrypted);
}
private void DecryptText()
{
SetPasswordAndStatusBar(false);
try
{
decryptedText.Text = BlockEncrypter.DecryptBlock(textToDecrypt.Text, _passwordEntry.Password.CombinedPasswords);
}
catch (CryptographicException ex)
{
decryptedText.Text = "";
MessageBox.Show(ex.Message, Resources.TextShredderMainForm_DecryptText_Message_Tamper_Alert, MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
catch (Exception)
{
decryptedText.Text = "";
MessageBox.Show(Resources.TextShredderMainForm_DecryptText_There_was_an_error_decrypting_the_message_, Resources.TextShredderMainForm_DecryptText_Decryption_Error, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
public void DecryptBlockThrowsArgumentNullExceptionIfPasswordIsNull()
{
BlockEncrypter.DecryptBlock("blah blah blah blah blah blah", null);
}
public void DecryptBlockThrowsArgumentNullExceptionIfTextToDecryptIsNull()
{
BlockEncrypter.DecryptBlock(null, null);
}