[development] Is there a module that ......

Hi Folks I use this pattern often, but have not found a module that does it, so I could just not know the correct name for things. * Create a unique key, normally an MD5 hash * assign a set of data to the key and store this in the DB * Create a url with this key in it * When someone visits this url, load my stored data and do a bunch of things I use this for obfuscated action urls, transactions and various other things, and keep doubting that I am the only one doing this. The url bit of this is just a use case, the main functionality I find myself building is the tool to create and retrieve datasets. Any existing module for this ? Peter