private void btnEncrypt_Click(object sender, EventArgs e) { if (this.comboBox1.SelectedIndex == 0) { string seckey = "tjlx4Xd_dXa6xsC3pq-uX92h"; DESEncryptor cryptor = new DESEncryptor(seckey); this.txtEncrypt.Text = cryptor.Encrypt(this.txtPlain.Text); } if (this.comboBox1.SelectedIndex == 1) { RSAEncryptor cryptor = new RSAEncryptor(null, null); this.txtEncrypt.Text = cryptor.Encrypt(this.txtPlain.Text); } if (this.comboBox1.SelectedIndex == 2) //HMACSHA256 { RSAEncryptor cryptor = new RSAEncryptor(null, null); this.txtEncrypt.Text = cryptor.Encrypt(this.txtPlain.Text); } else { string pwd = "800:6cc3cfc47dbd03c1cbc60398b0988a:186e5678c8b40921e56e847807b7de"; string[] arr = pwd.Split(':'); HMACSHA1Encryptor eb = new HMACSHA1Encryptor(arr[1], Convert.ToInt32(arr[0])); string arreer = eb.Encrypt("1"); } }
private void EncryptFile() { byte[] message = File.ReadAllBytes(openFileDialog.FileName); BigInteger p = BigInteger.Parse(p_textBox.Text); BigInteger q = BigInteger.Parse(q_textBox.Text); BigInteger closedKey = BigInteger.Parse(closedKey_textBox.Text); BigInteger eulerFunc = Helper.CalcEulerFunc(p, q); BigInteger key = Helper.CalcMultiplicativeInverseKey(eulerFunc, closedKey); ushort[] result = new ushort[message.Length]; try { result = RSAEncryptor.Encrypt(message, key, p * q); } catch (ArithmeticException ex) { MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } string resultText = ""; foreach (var num in result) { resultText += num.ToString() + " "; } result_textBox.Text = resultText; if (saveFileDialog.ShowDialog() == DialogResult.OK) { File.WriteAllBytes(saveFileDialog.FileName, Helper.ToByteArray(result)); } }
public void ThrowsIfMessageIsTooLongForSpecifiedKey(byte[] message, string pubKey) { // Arrange var keyParser = new PemRSAKeyParser(); var target = new RSAEncryptor(); keyParser.TryParsePublic(pubKey, out RSAParameters publicKey); // Act/Assert var ex = Assert.ThrowsAny <CryptographicException>(() => target.Encrypt(message, publicKey)); }
public void EncryptsAndDecryptsMessages(byte[] message, string pubKey, string privKey) { // Arrange var keyParser = new PemRSAKeyParser(); var target = new RSAEncryptor(); keyParser.TryParsePublic(pubKey, out RSAParameters publicKey); keyParser.TryParsePrivate(privKey, out RSAParameters privateKey); // Act var encryptedMessage = target.Encrypt(message, publicKey); var decryptedMessage = target.Decrypt(encryptedMessage, privateKey); // Assert Assert.Equal(message, decryptedMessage); }