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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/rand_util.h" | 5 #include "base/rand_util.h" |
6 | 6 |
7 #include <nacl/nacl_random.h> | 7 #include <nacl/nacl_random.h> |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
8 | 10 |
9 #include "base/basictypes.h" | |
10 #include "base/logging.h" | 11 #include "base/logging.h" |
11 | 12 |
12 namespace { | 13 namespace { |
13 | 14 |
14 void GetRandomBytes(void* output, size_t num_bytes) { | 15 void GetRandomBytes(void* output, size_t num_bytes) { |
15 char* output_ptr = static_cast<char*>(output); | 16 char* output_ptr = static_cast<char*>(output); |
16 while (num_bytes > 0) { | 17 while (num_bytes > 0) { |
17 size_t nread; | 18 size_t nread; |
18 const int error = nacl_secure_random(output_ptr, num_bytes, &nread); | 19 const int error = nacl_secure_random(output_ptr, num_bytes, &nread); |
19 CHECK_EQ(error, 0); | 20 CHECK_EQ(error, 0); |
20 CHECK_LE(nread, num_bytes); | 21 CHECK_LE(nread, num_bytes); |
21 output_ptr += nread; | 22 output_ptr += nread; |
22 num_bytes -= nread; | 23 num_bytes -= nread; |
23 } | 24 } |
24 } | 25 } |
25 | 26 |
26 } // namespace | 27 } // namespace |
27 | 28 |
28 namespace base { | 29 namespace base { |
29 | 30 |
30 // NOTE: This function must be cryptographically secure. http://crbug.com/140076 | 31 // NOTE: This function must be cryptographically secure. http://crbug.com/140076 |
31 uint64 RandUint64() { | 32 uint64_t RandUint64() { |
32 uint64 result; | 33 uint64_t result; |
33 GetRandomBytes(&result, sizeof(result)); | 34 GetRandomBytes(&result, sizeof(result)); |
34 return result; | 35 return result; |
35 } | 36 } |
36 | 37 |
37 void RandBytes(void* output, size_t output_length) { | 38 void RandBytes(void* output, size_t output_length) { |
38 GetRandomBytes(output, output_length); | 39 GetRandomBytes(output, output_length); |
39 } | 40 } |
40 | 41 |
41 } // namespace base | 42 } // namespace base |
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