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| author | Nick Mathewson <nickm@torproject.org> | 2013-02-08 17:13:11 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2013-02-08 17:13:11 -0500 |
| commit | 69ab7cd8281dcb312eb47b738d1c620e7bc042d9 (patch) | |
| tree | 5d26f22ff7f331c1bab1a9936b8dc0b3257bba1e /src/common | |
| parent | e998bbcdd5fbfda68f61468541d75bb4a36552bf (diff) | |
| download | tor-69ab7cd8281dcb312eb47b738d1c620e7bc042d9.tar.gz tor-69ab7cd8281dcb312eb47b738d1c620e7bc042d9.zip | |
Improve comment at Andrea's request
Diffstat (limited to 'src/common')
| -rw-r--r-- | src/common/util.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/common/util.c b/src/common/util.c index 03840402b7..49353a8ee1 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -5010,8 +5010,10 @@ tor_init_weak_random(tor_weak_rng_t *rng, unsigned seed) int32_t tor_weak_random(tor_weak_rng_t *rng) { - /* Here's a linear congruential generator. OpenBSD and glibc use it. We - * don't want to use windows's rand(), because that returns values in the + /* Here's a linear congruential generator. OpenBSD and glibc use these + * parameters; they aren't too bad, and should have maximal period over the + * range 0..INT32_MAX. We don't want to use the platform rand() or random(), + * since some platforms have bad weak RNGs that only return values in the * range 0..INT16_MAX, which just isn't enough. */ rng->state = (rng->state * 1103515245 + 12345) & 0x7fffffff; return (int32_t) rng->state; |