示例#1
0
        private void buttonEncryptAes_Click(object sender, EventArgs e)
        {
            alice.plaintext = textBoxPlainTextAlice.Text;
            if (!string.IsNullOrEmpty(alice.plaintext) && alice.BytesSessionkey != null)
            {
                if (aesMode == CipherMode.OFB)
                {
                    //работает только в bouncyCastle
                    // Encrypt the string to an array of bytes.
                    byte[] encrypted = AES_bouncy_OFB.encrypt(alice.plaintext, alice.BytesSessionkey);//AES.EncryptStringToBytes_Aes(alice.plaintext, alice.BytesSessionkey);

                    alice.encryptedMessage            = Convert.ToBase64String(encrypted);
                    alice.encryptedMessageBytes       = encrypted;
                    textBoxEncryptedMessageAlice.Text = alice.encryptedMessage;
                }
                else
                {
                    //byte[] bytesKey = Encoding.UTF8.GetBytes(sessionkey);
                    // Encrypt the string to an array of bytes.
                    byte[] encrypted = AES.EncryptStringToBytes_Aes(alice.plaintext, alice.BytesSessionkey);

                    alice.encryptedMessage            = Convert.ToBase64String(encrypted);
                    alice.encryptedMessageBytes       = encrypted;
                    textBoxEncryptedMessageAlice.Text = alice.encryptedMessage;
                }
            }
            else
            {
                MessageBox.Show("plaintext or session key empty");
            }
        }
示例#2
0
 internal string decryptMessage(CipherMode aesMode)
 {
     if (aesMode == CipherMode.OFB)
     {
         var res = AES_bouncy_OFB.decrypt(encryptedMessageBytes, decryptedSessionKeyBytes);
         decryptedMessage = res;
         return(res);
     }
     else
     {
         var res = AES.DecryptStringFromBytes_Aes(encryptedMessageBytes, decryptedSessionKeyBytes);
         decryptedMessage = res;
         return(res);
     }
 }