skalibs/src/librandom/random_string.c, branch v2.15.1.0

Prepare for 2.12.0.0. librandom revamp.

2022-04-09T02:28:05Z

Signed-off-by: Laurent Bercot

sysdeps redesign: first part: minimize clr tests

2019-09-20T18:22:27Z

Remaining clr: emptyregex: can be safely guessed to no nullispointer: can't be safely guessed, but do we need the test? devurandom: can't be safely guessed malloc0: can more or less be safely guessed to no

More superflous headers cleanup and tiny fixes

2017-03-13T22:43:45Z

Types change: big pass on libstddjb and libunixonacid

2017-02-21T12:05:07Z

libdatastruct still missing, library still not functional

Types fix: librandom, libstdcrypto

2017-01-21T15:46:20Z

Also fix actual random_string compilation with musl and getrandom()...

2016-12-05T10:13:52Z

Include skalibs/nonposix.h so BSDs can find arc4random

2016-10-14T17:32:31Z

Clean up and modernize librandom.

2016-10-14T17:07:56Z

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.