SecureString helper

SecureStringHelper.cs

using System.Net;
using System.Security;

public static class SecureStringHelper
{
    public static SecureString ToSecureString(this string plaintext)
    {
        return new NetworkCredential("N/A", plaintext).SecurePassword;
    }
    
    public static string ToPlainTextString(this SecureString secureString)
    {
        return new NetworkCredential("N/A", secureString).Password;
    }
}