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Re:Single random bit flip causes error in certificate transp... by caf on Sunday July 04, 2021 @06:03PM (#27732982)
Presumably it's possible to code defensively against this sort of thing, by eg. running the entire operation twice and checking the result is the same before committing it to the published log?
Re:Single random bit flip causes error in certificate transp... by makomk on Sunday July 04, 2021 @06:14PM (#27733067)
Big tech companies like Google and Facebook have encountered problems where running the same crypto operation twice on the same processor deterministically or semi-deterministically gives the same incorrect result... so the check needs to be on done on separate hardware as well.
Re:Single random bit flip causes error in certificate transp... by caf on Sunday July 04, 2021 @07:01PM (#27733305)
I don't think that matters in this case, because the entire point of the log machine is to run crypto operations. If it has such a faulty processor it is basically unusable for the task anyway.