.NET desktop App remembering login to a webservice

Posted by pete the pagan-gerbil on Stack Overflow See other posts from Stack Overflow or by pete the pagan-gerbil
Published on 2010-03-16T12:41:38Z Indexed on 2010/03/16 12:46 UTC
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I am in the planning stages of a .NET desktop app that will communicate with a web service. The web service requires a username and password, and a common feature in this sort of app is to save the user's credentials for the next logon.

I've thought of a few ways of achieving this, but I am not sure what the most secure way would be. Should it be stored encrypted in a file (and could someone nefarious copy that file to their own machine and hence logon as the original person), or in the registry somehow (I've not done any registry work before, is it secure and would it work)? Are there any other options I might not have thought of?

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