Question for the Hive Mind:
I am using Ubuntu Linux 9.04.
I want to simply hash up a text file, so I can just push a button or enter a short password to unlock it. This doesn't need to be bulletproof; when I was running Windows, I used
EditPad Lite's ROT-13 function for the same purpose. It does, however, need to be portable: I want to be able to
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