1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "base/rand_util.h"
6 
7 #include <nacl/nacl_random.h>
8 #include <stddef.h>
9 #include <stdint.h>
10 
11 #include "base/check_op.h"
12 
13 namespace base {
14 
RandBytes(void * output,size_t output_length)15 void RandBytes(void* output, size_t output_length) {
16   char* output_ptr = static_cast<char*>(output);
17   while (output_length > 0) {
18     size_t nread;
19     const int error = nacl_secure_random(output_ptr, output_length, &nread);
20     CHECK_EQ(error, 0);
21     CHECK_LE(nread, output_length);
22     output_ptr += nread;
23     output_length -= nread;
24   }
25 }
26 
27 }  // namespace base
28