url- querystring | need expert suggestion | Is it advisable/fare to add url link into db......

Hello ASP World..!
Story: .... I have a search dialog form collects search param and calls master page to display information based on query string... Works well by passing values by querystring.
just wondering "what if" user tampers or plays with url parameters... page gives access to other info. in that case. example
http://localhost/octopus/shipmentinfo.aspx?actno=WJgtAbTGa3P%2bUBkYmJrHpA%3d%3d&doctype=OEX&brid=1018&jc=0&po=0&wb=0&inv=0
I'm thinking of writing these param or url string in database and get record id of it and send encrypted recID  by query-string....!!@#$#@$ ............... and in page_load master page - get recID deCrypt it and get URL from stored database... for secure take-off and landing....
IS THIS ...