From: Francis Cianfrocca <garbagecat10@...>
Date: 2006-10-29T22:02:59+09:00
Subject: Re: symetrical encryption algo's ?

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On 10/28/06, dc <lister@pikkle.com> wrote:
>
> Hi list.
>
> I need to encode some data with a userID and then also be able to
> decode it with the same key.
>
> This is basically a quick approach to obfuscate URLs. Its for an
> environment where we know the users ID with some degree of certainty.
>
> Are there any libraries/simple algorithms to do this in ruby? it might
> be as simple as bitshiting a string around...
>
> any other suggested alternatives to this approach?
>
> tx



I have a feeling I'm missing something, but if all you want to do is
generate obfuscated URLs, why not just the the SHA1-hash of a string
consisting of the  "real" url and the user's name? You can store the
generated urls in the server-side user-session so you don't have to do any
decrypting.

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