Securing database keys for client-side processing

Posted by danp on Stack Overflow See other posts from Stack Overflow or by danp
Published on 2012-04-15T16:58:38Z Indexed on 2012/04/15 17:29 UTC
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php

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mysql

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security

I have a tree of information which is sent to the client in a JSON object. In that object, I don't want to have raw IDs which are coming from the database. I thought of making a hash of the id and a field in the object (title, for example) or a salt, but I'm worried that this might have a serious effect on processing overhead.

SELECT * FROM `things` where md5(concat(id,'some salt')) = md5('1some salt');

Is there a standard practice for obscuring IDs in this kind of situation?

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