Redirect to a different web application with associated data

I'm building a solution where 2 applications are involved. One of them handles the login and user management, and and other provides the service itself.

I need a way to send the user from the first app to the second, along wi开发者_如何学JAVAth some data that derives from the whole login process. The data has to be sent in such a way that it can't be tampered with; or a way to check if it's legit has to be available.

Some more details:

• The solution consists of 2 ASP.NET (Webforms) websites
• Although both websites are sitting on the same server, a solution that doesn't rely on this is prefered

Thanks in advance.

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It might not be the best solution.

But this is what immediately comes to my mind.

Serialize the data, (from first website) that you need to pass, into a database accessible from both web sites (can be a third server in worst scenario when your both website might be sitting on different server). Generate a key for the serialized data in the database. It can be a GUID. Pass it on to the other web site. Other website can delete it immediately after retrieving it by using the give key.

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You could set an encrypted token cookie in the login application and pick it up in the management application.

I don't know of any way to transfer state data between applications on the server.

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I am not if it is possible to use Server.transfer to the second site. But this would definitely be tamper-proof since it would occur on the server. The landing page on the second side would then persist the transfered info. Context object would be a good location to store the transfered info.
At a minimum it would recquire both apps to be on the same server.