diff options
-rw-r--r-- | random.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -454,6 +454,7 @@ ruby_fill_random_bytes(void *seed, size_t size, int need_secure) #define fill_random_bytes ruby_fill_random_bytes +/* cnt must be 4 or more */ static void fill_random_seed(uint32_t *seed, size_t cnt) { @@ -1466,7 +1467,12 @@ rb_memhash(const void *ptr, long len) void Init_RandomSeedCore(void) { + if (!fill_random_bytes(&hash_salt, sizeof(hash_salt), FALSE)) return; + /* + If failed to fill siphash's salt with random data, expand less random + data with MT. + Don't reuse this MT for Random::DEFAULT. Random::DEFAULT::seed shouldn't provide a hint that an attacker guess siphash's seed. */ |