public Encryptor(EncryptionSettings settings)
{
var symmetricKey = CreateSymmetricKey();
var keyBytes = GetKeyBytes(settings);
var initVectorBytes = Encoding.ASCII.GetBytes(settings.InitVector);
encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes);
decryptor = symmetricKey.CreateDecryptor(keyBytes, initVectorBytes);
}
static byte[] GetKeyBytes(EncryptionSettings settings)
{
var saltBytes = Encoding.ASCII.GetBytes(settings.SaltValue);
var password = new Rfc2898DeriveBytes(settings.PassPhrase, saltBytes, settings.PasswordIterations);
var keyBytes = password.GetBytes(settings.KeySize/8);
return keyBytes;
}