Esempio n. 1
0
        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);
            }
        }
Esempio n. 2
0
        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}");
                }
            }
        }