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Subject: [ub] signed left shifts again
From: John Regehr (regehr_at_[hidden])
Date: 2013-11-13 11:09:19

Ok, I've spent some time looking at open source crypto libraries and
wrote up some results here:


A good number of these problems will go away once shifting into the sign
bit is no longer UB, and most of the rest go away once the maintainers
of 5 packages fix their rotate functions.


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