usr/src/test/libc-tests/tests/random/arc4random_rekey.c

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright (c) 2015, Joyent, Inc.
  14  */
  15
  16 /*
  17  * This test is designed to fill a buffer with arc4random_buf and ensure that we
  18  * rekey ourselves multiple times during this test. We have a 4 Mb buffer and
  19  * currently we rekey ourselves every ~1.53 Mb. A wrapper script should call
  20  * this with an appropriate bit of D to verify the rekey.
  21  */
  22
  23 #include <stdlib.h>
  24 #include <assert.h>
  25 #include <errno.h>
  26
  27 #define NENTS   (4 * 1024 * 1024)
  28
  29 int
  30 main(void)
  31 {
  32         uint8_t *buf;
  33
  34         buf = malloc(NENTS);
  35         assert(buf != NULL);
  36         arc4random_buf(buf, NENTS);
  37
  38         return (0);
  39 }