protected override void Execute(CodeActivityContext context)
{
var key = Key.Get(context);
var iv = IV.Get(context);
var cipherText = CipherText.Get(context);
if (cipherText == null || cipherText.Length <= 0)
{
throw new ArgumentNullException("cipherText");
}
if (key == null || key.Length <= 0)
{
throw new ArgumentNullException("key");
}
string plaintext = null;
using (AesManaged aes = new AesManaged())
{
ICryptoTransform decryptor = aes.CreateDecryptor(Encoding.UTF8.GetBytes(key), Encoding.UTF8.GetBytes(iv));
using (MemoryStream ms = new MemoryStream(Convert.FromBase64String(cipherText)))
{
using (CryptoStream cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))
{
using (StreamReader reader = new StreamReader(cs))
plaintext = reader.ReadToEnd();
}
}
}
PlainText.Set(context, plaintext);
}
protected override void Execute(CodeActivityContext context)
{
var key = Key.Get(context);
var iv = IV.Get(context);
var plainText = PlainText.Get(context);
if (plainText == null || plainText.Length <= 0)
{
throw new ArgumentNullException("plainText");
}
if (key == null || key.Length <= 0)
{
throw new ArgumentNullException("key");
}
byte[] encrypted;
using (AesManaged aes = new AesManaged())
{
ICryptoTransform encryptor = aes.CreateEncryptor(Encoding.UTF8.GetBytes(key), Encoding.UTF8.GetBytes(iv));
using (MemoryStream ms = new MemoryStream())
{
using (CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter sw = new StreamWriter(cs))
sw.Write(plainText);
encrypted = ms.ToArray();
}
}
}
var result = Convert.ToBase64String(encrypted);
CipherText.Set(context, result);
}