From a1933bd1847951b959016f59ee744d1b18a00142 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Fri, 14 Oct 2016 17:07:56 +0000 Subject: 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. --- src/librandom/random_mask2.c | 35 ----------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 src/librandom/random_mask2.c (limited to 'src/librandom/random_mask2.c') diff --git a/src/librandom/random_mask2.c b/src/librandom/random_mask2.c deleted file mode 100644 index ab8c8e7..0000000 --- a/src/librandom/random_mask2.c +++ /dev/null @@ -1,35 +0,0 @@ -/* ISC license. */ - -#include -#include "random-internal.h" - -unsigned int random_mask2 (register unsigned int n) -{ - for (;;) - { - register unsigned int m = n | (n >> 1) ; - if (m == n) return n ; - n = m ; - } -} - -unsigned int random_nchars (register unsigned int n) -{ - return n <= 0xff ? 1 : -#if SKALIBS_SIZEOFUINT == 2 - 2 -#else - n <= 0xffff ? 2 : - n <= 0xffffffUL ? 3 : -# if SKALIBS_SIZEOFUINT == 4 - 4 -# else - n <= 0xffffffffUL ? 4 : - n <= 0xffffffffffULL ? 5 : - n <= 0xffffffffffffULL ? 6 : - n <= 0xffffffffffffffULL ? 7 : - 8 -# endif -#endif - ; -} -- cgit v1.3.1