public static string Encrypt(string plainText, string passPhrase)
{
string base64String;
byte[] numArray = StringCipher.Generate256BitsOfRandomEntropy();
byte[] numArray1 = StringCipher.Generate256BitsOfRandomEntropy();
byte[] bytes = Encoding.UTF8.GetBytes(plainText);
byte[] bytes1 = (new Rfc2898DeriveBytes(passPhrase, numArray, 1000)).GetBytes(32);
using (RijndaelManaged rijndaelManaged = new RijndaelManaged())
{
rijndaelManaged.BlockSize = 256;
rijndaelManaged.Mode = CipherMode.CBC;
rijndaelManaged.Padding = PaddingMode.PKCS7;
using (ICryptoTransform cryptoTransform = rijndaelManaged.CreateEncryptor(bytes1, numArray1))
{
using (MemoryStream memoryStream = new MemoryStream())
{
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write))
{
cryptoStream.Write(bytes, 0, (int)bytes.Length);
cryptoStream.FlushFinalBlock();
byte[] array = numArray.Concat <byte>(numArray1).ToArray <byte>();
array = array.Concat <byte>(memoryStream.ToArray()).ToArray <byte>();
memoryStream.Close();
cryptoStream.Close();
base64String = Convert.ToBase64String(array);
}
}
}
}
return(base64String);
}
