Lots of people working in cryptography have no deep concern with real application issues. They are trying to discover things clever enough to write papers about.

I thought cryptography was a technique that did not require your trusting other people-that if you encrypted your files, you would have the control to make the choice as to whether you would surrender your files.

Some people make sharp distinctions sort of between their recreational musings and their professional work. I don't make that distinction very much.

Whitfield Diffie Quotes