static void Main(string[] args)
{
PublicKeyResponse publicKeyResponse = GetPublicKeyMessageId();
if (publicKeyResponse.MessageId != null && publicKeyResponse.RsaPublicKey != null)
{
Console.Write("Public key request successful. Enter your message: ");
string message = Console.ReadLine();
SymmetricAlgorithmService symmetricService = new SymmetricAlgorithmService();
SymmetricEncryptionResult symmetricEncryptionResult = symmetricService.Encrypt(message);
AsymmetricEncryptionService asymmetricService = new AsymmetricEncryptionService(publicKeyResponse.RsaPublicKey);
string encryptedAesPublicKey = asymmetricService.GetCipherText(ConfigurationManager.AppSettings["RijndaelManagedKey"]);
SendMessageArguments sendMessageArgs = new SendMessageArguments()
{
EncryptedPublicKey = encryptedAesPublicKey,
SymmetricEncryptionArgs = symmetricEncryptionResult, MessageId = publicKeyResponse.MessageId
};
string jsonifiedArgs = JsonConvert.SerializeObject(sendMessageArgs);
SendSecretMessageToReceiver(jsonifiedArgs);
}
else
{
Console.WriteLine("Public key request failed.");
}
Console.ReadKey();
}
public SymmetricEncryptionResult Encrypt(string plainText)
{
SymmetricEncryptionResult res = new SymmetricEncryptionResult();
RijndaelManaged rijndael = CreateCipher();
res.InitialisationVector = Convert.ToBase64String(rijndael.IV);
ICryptoTransform cryptoTransform = rijndael.CreateEncryptor();
byte[] plain = Encoding.UTF8.GetBytes(plainText);
byte[] cipherText = cryptoTransform.TransformFinalBlock(plain, 0, plain.Length);
res.CipherText = Convert.ToBase64String(cipherText);
return(res);
}
