You can use one of the encryption functions that come with SecurityAssist in the save cookie UI... then just update the cookie login so that it isn't double-encrypted when logging in.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.