src/basic/random-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <stdbool.h>
   9 #include <stddef.h>
  10 #include <stdint.h>
  11
  12 int acquire_random_bytes(void *p, size_t n, bool high_quality_required);
  13 void pseudorandom_bytes(void *p, size_t n);
  14 void random_bytes(void *p, size_t n);
  15 void initialize_srand(void);
  16
  17 static inline uint64_t random_u64(void) {
  18         uint64_t u;
  19         random_bytes(&u, sizeof(u));
  20         return u;
  21 }
  22
  23 static inline uint32_t random_u32(void) {
  24         uint32_t u;
  25         random_bytes(&u, sizeof(u));
  26         return u;
  27 }