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With existing hardware, no, it is fundamentally impossible to demonstrate that the code you run is indeed the code you should run and nothing else. This is easily seen with regards to confidentiality: imagine, for instance, that you run a vote-counting application; voters connect to it and send their vote. The "honest" application does not leak individual ...


Tom's post is a nice start on this. However, there's a more straight-forward approach I created years ago: a standard implementation on diverse pieces of hardware that check each other. I derived this because I realized the subversion problem actually boiled down to which manufacturers or reviewers you trust. The attack problem requires enemy to know what ...

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