[Cryptography] Compiler optimization side channel

[Richard Clayton]

In message <CAMm+LwjwvJFSTKSjH1zCZ5tTJhaDg=14k1VBed6uR1pMtwtHnw at mail.gma
il.com>, Phillip Hallam-Baker <phill at hallambaker.com> writes

>    Which looked all well and good. But then I thought to myself, what 
>    if the compiler gets hold of that data and decides to optimize the 
>    arithmetic creating temporary variables that it leaves hanging 
>    about?

https://www.cl.cam.ac.uk/~rja14/Papers/whatyouc.pdf

and doubtless much other related work as well

-- 
richard                                                   Richard Clayton

Those who would give up essential Liberty, to purchase a little temporary 
Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755
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