private void btn_Blowfish_Decrypt_Click(object sender, EventArgs e)
{
Stopwatch watch = new Stopwatch();
Stopwatch watch1 = new Stopwatch();
if (txt_Blowfish_Input.Text == "")
{
lblErrorMessage.Visible = true;
lblErrorMessage.Text =
"You must enter Input Value! ";
}
else if (txt_Blowfish_key.Text == "")
{
lblErrorMessage.Visible = true;
lblErrorMessage.Text =
"You must enter Key Value! ";
}
else if (txt_Blowfish_Input.TextLength < 16)
{
lblErrorMessage.Visible = true;
lblErrorMessage.Text =
"You must enter a value larger than 15 size! ";
}
else
{
string ciphertext = txt_Blowfish_Input.Text;
// Get the key
string key = txt_Blowfish_key.Text;
var clearText_to_AES = Encoding.UTF8.GetBytes(txt_Blowfish_Input.Text);
var key_to_AES = Encoding.UTF8.GetBytes(txt_Blowfish_key.Text);
watch.Start();
BlowFish blowFish = new BlowFish(key);
string plaintext = blowFish.Decrypt_CBC(ciphertext);
watch.Stop();
lbl_Blowfish_time.Text = "Blowfish Time Decrypt = " + watch.Elapsed.TotalMilliseconds + " ms";
byte[] cipherText_to_AES = AesImplementation.Encrypt(clearText_to_AES, key_to_AES);
watch1.Start();
byte[] plainText = AesImplementation.Decrypt(cipherText_to_AES, key_to_AES);
watch1.Stop();
lbl_Blowfish_Aes_time.Text = "AES Time Decrypt = " + watch1.Elapsed.TotalMilliseconds + " ms";
if (watch.Elapsed.TotalMilliseconds < watch1.Elapsed.TotalMilliseconds)
{
lbl_Blowfish_Compare_time.Text = "Blowfish Decrypt is faster than AES Decrypt";
}
else
{
lbl_Blowfish_Compare_time.Text = "AES Decrypt is faster than Blowfish Decrypt";
}
txt_Blowfish_output.Text = plaintext;
byte[] bytes = Encoding.UTF8.GetBytes(plaintext);
txt_Blowfish_hex.Text = BitConverter.ToString(bytes);
}
}
private void btn_AES_Decrypt_Click(object sender, EventArgs e)
{
if (ValidateFields())
{
try
{
Stopwatch watch = new Stopwatch();
Stopwatch watch1 = new Stopwatch();
lblErrorMessage.Visible = false;
string plaintext_to_Blow = txt_AES_Input.Text;
string key_to_Blow = txt_AES_key.Text;
byte[] cipherText = Convert.FromBase64String(txt_AES_Input.Text);
// Get the key
var key = Encoding.UTF8.GetBytes(txt_AES_key.Text);
// Decrypt the cipher text
watch.Start();
byte[] plainText = AesImplementation.Decrypt(cipherText, key);
watch.Stop();
lbl_AES_time.Text = "AES Decrypt = " + watch.Elapsed.TotalMilliseconds + " ms";
BlowFish blowFish = new BlowFish(key_to_Blow);
string ciphertext_to_Blow = blowFish.Encrypt_CBC(plaintext_to_Blow);
watch1.Start();
string plaintext_Blow = blowFish.Decrypt_CBC(ciphertext_to_Blow);
watch1.Stop();
lbl_AES_Blowfish_time.Text = "Blowfish Decrypt = " + watch1.Elapsed.TotalMilliseconds + " ms";
if (watch.Elapsed.TotalMilliseconds < watch1.Elapsed.TotalMilliseconds)
{
lbl_AES_Compare_time.Text = "AES Decrypt is faster than Blowfish Decrypt";
}
else
{
lbl_AES_Compare_time.Text = "Blowfish Decrypt is faster than AES Decrypt";
}
lbl_AES_time.Visible = true;
lbl_AES_Blowfish_time.Visible = true;
lbl_AES_Compare_time.Visible = true;
txt_AES_output.Text = Convert.ToBase64String(cipherText);
// Set the right output
txt_AES_output.Text = Encoding.UTF8.GetString(plainText);
txt_AES_hex.Text = BitConverter.ToString(plainText);
}
catch (Exception exception)
{
MessageBox.Show($@"An error occured: {exception}");
}
}
}
