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| 1 /* | 1 /* |
| 2 * Copyright (c) 1996, David Mazieres <dm@uun.org> | 2 * Copyright (c) 1996, David Mazieres <dm@uun.org> |
| 3 * Copyright (c) 2008, Damien Miller <djm@openbsd.org> | 3 * Copyright (c) 2008, Damien Miller <djm@openbsd.org> |
| 4 * | 4 * |
| 5 * Permission to use, copy, modify, and distribute this software for any | 5 * Permission to use, copy, modify, and distribute this software for any |
| 6 * purpose with or without fee is hereby granted, provided that the above | 6 * purpose with or without fee is hereby granted, provided that the above |
| 7 * copyright notice and this permission notice appear in all copies. | 7 * copyright notice and this permission notice appear in all copies. |
| 8 * | 8 * |
| 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 */ | 16 */ |
| 17 | 17 |
| 18 #include "wtf/CryptographicallyRandomNumber.h" | 18 #include "wtf/CryptographicallyRandomNumber.h" |
| 19 | 19 |
| 20 #include <string.h> |
| 20 #include "base/rand_util.h" | 21 #include "base/rand_util.h" |
| 21 #include <string.h> | |
| 22 | 22 |
| 23 namespace WTF { | 23 namespace WTF { |
| 24 | 24 |
| 25 static bool s_shouldUseAlwaysZeroRandomSourceForTesting = false; | 25 static bool s_shouldUseAlwaysZeroRandomSourceForTesting = false; |
| 26 | 26 |
| 27 void setAlwaysZeroRandomSourceForTesting() { | 27 void setAlwaysZeroRandomSourceForTesting() { |
| 28 s_shouldUseAlwaysZeroRandomSourceForTesting = true; | 28 s_shouldUseAlwaysZeroRandomSourceForTesting = true; |
| 29 } | 29 } |
| 30 | 30 |
| 31 uint32_t cryptographicallyRandomNumber() { | 31 uint32_t cryptographicallyRandomNumber() { |
| 32 uint32_t result; | 32 uint32_t result; |
| 33 cryptographicallyRandomValues(&result, sizeof(result)); | 33 cryptographicallyRandomValues(&result, sizeof(result)); |
| 34 return result; | 34 return result; |
| 35 } | 35 } |
| 36 | 36 |
| 37 void cryptographicallyRandomValues(void* buffer, size_t length) { | 37 void cryptographicallyRandomValues(void* buffer, size_t length) { |
| 38 if (s_shouldUseAlwaysZeroRandomSourceForTesting) { | 38 if (s_shouldUseAlwaysZeroRandomSourceForTesting) { |
| 39 memset(buffer, '\0', length); | 39 memset(buffer, '\0', length); |
| 40 return; | 40 return; |
| 41 } | 41 } |
| 42 | 42 |
| 43 // This should really be crypto::RandBytes(), but WTF can't depend on crypto. | 43 // This should really be crypto::RandBytes(), but WTF can't depend on crypto. |
| 44 // The implementation of crypto::RandBytes() is just calling | 44 // The implementation of crypto::RandBytes() is just calling |
| 45 // base::RandBytes(), so both are actually same. | 45 // base::RandBytes(), so both are actually same. |
| 46 base::RandBytes(buffer, length); | 46 base::RandBytes(buffer, length); |
| 47 } | 47 } |
| 48 | 48 |
| 49 } // namespace WTF | 49 } // namespace WTF |
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