Really simple encryption with C# and SymmetricAlgorithm

Question

I\'m looking for a very simple crypt / decrypt method. I will be using always the same static key. I\'m aware of the risks of this approach. Currently I\'m

Answer 1

If you don't want to handle keys yourself then let the operating system do it for your. E.g. use Windows Data Protection (DPAPI).

You can write your own, string-based, version of System.Security.Cryptography.ProtectedData.Protect and Unprotect methods by using something like:

public static string Crypt (this string text)
{
    return Convert.ToBase64String (
        ProtectedData.Protect (
            Encoding.Unicode.GetBytes (text) ) );
}

public static string Derypt (this string text)
{
    return Encoding.Unicode.GetString (
        ProtectedData.Unprotect (
             Convert.FromBase64String (text) ) );
}