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authorLaurent Bercot <ska-skaware@skarnet.org>2016-10-14 17:07:56 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2016-10-14 17:07:56 +0000
commita1933bd1847951b959016f59ee744d1b18a00142 (patch)
tree42392f2df048defd712fa12d290bf84a7a77df6d /src/libstddjb/fd_copy2.c
parenteaf9404b22bba7be5092672144b867380c602beb (diff)
downloadskalibs-a1933bd1847951b959016f59ee744d1b18a00142.tar.xz
Clean up and modernize librandom.
Correct random number generation has historically been suprisingly painful to achieve. There was no standard, every system behaved in a subtly different way, and there were a few userland initiatives to get decent randomness, all incompatible of course. The situation is a bit better now, we're heading towards some standardization. The arc4random() series of functions is a good API, and available on a lot of systems - unfortunately not Linux, but on Linux the new getrandom() makes using /dev/random obsolete. So I removed the old crap in librandom, dropped EGD support, dropped dynamic backend selection, made a single API series (random_* instead of goodrandom_* and badrandom_*), added an arc4random backend and a getrandom backend, and defaulted to /dev/urandom backed up by SURF in the worst case. This should be much smaller and logical. However, it's a major API break, so the skarnet.org stack will be changed to adapt.
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