asp.net - How to maintain confidentiality of transformed media in two-host configuration? -


Assume that I have two machines, A and B, on the public Internet (not intranet).

Machine A has a web server that hosts unencrypted images of confidential documents.

Machine B hosts an ASP.NET or Java Servlet page to allow the hiding of those pictures.

The URL can be passed on the machine A on the Machine A on Machine B., which can then manipulate the image.

How can machine B provide a guarantee that it does not pass any confidential information from Machine A?

If machine B is to be accessed from machine A, and machine n to an encrypted version of documents Machine B can not count on the code running, I can not think of any of the guarantees of machine A in that way machine B has destroyed all the copies sent to it.


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