Tor 0.4.9.0-alpha-dev
weakrng.h
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1/* Copyright (c) 2003, Roger Dingledine
2 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
3 * Copyright (c) 2007-2021, The Tor Project, Inc. */
4/* See LICENSE for licensing information */
5
6/**
7 * \file weakrng.h
8 *
9 * \brief Header for weakrng.c
10 **/
11
12#ifndef TOR_WEAKRNG_H
13#define TOR_WEAKRNG_H
14
15#include "lib/cc/torint.h"
16
17/* ===== Insecure rng */
18typedef struct tor_weak_rng_t {
19 uint32_t state;
21
22#ifndef COCCI
23#define TOR_WEAK_RNG_INIT {383745623}
24#endif
25#define TOR_WEAK_RANDOM_MAX (INT_MAX)
26
27void tor_init_weak_random(tor_weak_rng_t *weak_rng, unsigned seed);
28int32_t tor_weak_random(tor_weak_rng_t *weak_rng);
29int32_t tor_weak_random_range(tor_weak_rng_t *rng, int32_t top);
30/** Randomly return true according to <b>rng</b> with probability 1 in
31 * <b>n</b> */
32#define tor_weak_random_one_in_n(rng, n) (0==tor_weak_random_range((rng),(n)))
33
34#endif /* !defined(TOR_WEAKRNG_H) */
Integer definitions used throughout Tor.
int32_t tor_weak_random_range(tor_weak_rng_t *rng, int32_t top)
Definition: weakrng.c:48
int32_t tor_weak_random(tor_weak_rng_t *weak_rng)
Definition: weakrng.c:32
void tor_init_weak_random(tor_weak_rng_t *weak_rng, unsigned seed)
Definition: weakrng.c:22