Avoid negating unsigned values

2026-08-25 08:37:13 +09:00 · 2017-02-20 21:12:33 +01:00
parent 40b4462239
commit f5673c7cc0
1 changed files with 1 additions and 1 deletions
@@ -140,7 +140,7 @@ randombytes_uniform(const uint32_t upper_bound)
    if (upper_bound < 2) {
        return 0;
    }
-    min = (uint32_t) (-upper_bound % upper_bound);
+    min = (1U + ~upper_bound) % upper_bound;
    do {
        r = randombytes_random();
    } while (r < min);