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security/nss/lib/freebl/mpi/utils/prng.c@b8a032363ba2 (annotated)

security/nss/lib/freebl/mpi/utils/prng.c

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	/*
michael@0	2	* prng.c
michael@0	3	*
michael@0	4	* Command-line pseudo-random number generator
michael@0	5	*
michael@0	6	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	7	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	8	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	9
michael@0	10	#include <stdio.h>
michael@0	11	#include <stdlib.h>
michael@0	12	#include <limits.h>
michael@0	13	#include <time.h>
michael@0	14
michael@0	15	#ifdef __OS2__
michael@0	16	#include <types.h>
michael@0	17	#include <process.h>
michael@0	18	#else
michael@0	19	#include <unistd.h>
michael@0	20	#endif
michael@0	21
michael@0	22	#include "bbs_rand.h"
michael@0	23
michael@0	24	int main(int argc, char *argv[])
michael@0	25	{
michael@0	26	unsigned char *seed;
michael@0	27	unsigned int ix, num = 1;
michael@0	28	pid_t pid;
michael@0	29
michael@0	30	if(argc > 1) {
michael@0	31	num = atoi(argv[1]);
michael@0	32	if(num <= 0)
michael@0	33	num = 1;
michael@0	34	}
michael@0	35
michael@0	36	pid = getpid();
michael@0	37	srand(time(NULL) * (unsigned int)pid);
michael@0	38
michael@0	39	/* Not a perfect seed, but not bad */
michael@0	40	seed = malloc(bbs_seed_size);
michael@0	41	for(ix = 0; ix < bbs_seed_size; ix++) {
michael@0	42	seed[ix] = rand() % UCHAR_MAX;
michael@0	43	}
michael@0	44
michael@0	45	bbs_srand(seed, bbs_seed_size);
michael@0	46	memset(seed, 0, bbs_seed_size);
michael@0	47	free(seed);
michael@0	48
michael@0	49	while(num-- > 0) {
michael@0	50	ix = bbs_rand();
michael@0	51
michael@0	52	printf("%u\n", ix);
michael@0	53	}
michael@0	54
michael@0	55	return 0;
michael@0	56
michael@0	57	}