security/sandbox/chromium/base/rand_util.h@6474c204b198 (annotated)
security/sandbox/chromium/base/rand_util.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef BASE_RAND_UTIL_H_ |
| michael@0 | 6 | #define BASE_RAND_UTIL_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | #include <string> |
| michael@0 | 9 | |
| michael@0 | 10 | #include "base/base_export.h" |
| michael@0 | 11 | #include "base/basictypes.h" |
| michael@0 | 12 | |
| michael@0 | 13 | namespace base { |
| michael@0 | 14 | |
| michael@0 | 15 | // Returns a random number in range [0, kuint64max]. Thread-safe. |
| michael@0 | 16 | BASE_EXPORT uint64 RandUint64(); |
| michael@0 | 17 | |
| michael@0 | 18 | // Returns a random number between min and max (inclusive). Thread-safe. |
| michael@0 | 19 | BASE_EXPORT int RandInt(int min, int max); |
| michael@0 | 20 | |
| michael@0 | 21 | // Returns a random number in range [0, range). Thread-safe. |
| michael@0 | 22 | // |
| michael@0 | 23 | // Note that this can be used as an adapter for std::random_shuffle(): |
| michael@0 | 24 | // Given a pre-populated |std::vector<int> myvector|, shuffle it as |
| michael@0 | 25 | // std::random_shuffle(myvector.begin(), myvector.end(), base::RandGenerator); |
| michael@0 | 26 | BASE_EXPORT uint64 RandGenerator(uint64 range); |
| michael@0 | 27 | |
| michael@0 | 28 | // Returns a random double in range [0, 1). Thread-safe. |
| michael@0 | 29 | BASE_EXPORT double RandDouble(); |
| michael@0 | 30 | |
| michael@0 | 31 | // Given input |bits|, convert with maximum precision to a double in |
| michael@0 | 32 | // the range [0, 1). Thread-safe. |
| michael@0 | 33 | BASE_EXPORT double BitsToOpenEndedUnitInterval(uint64 bits); |
| michael@0 | 34 | |
| michael@0 | 35 | // Fills |output_length| bytes of |output| with random data. |
| michael@0 | 36 | // |
| michael@0 | 37 | // WARNING: |
| michael@0 | 38 | // Do not use for security-sensitive purposes. |
| michael@0 | 39 | // See crypto/ for cryptographically secure random number generation APIs. |
| michael@0 | 40 | BASE_EXPORT void RandBytes(void* output, size_t output_length); |
| michael@0 | 41 | |
| michael@0 | 42 | // Fills a string of length |length| with with random data and returns it. |
| michael@0 | 43 | // |length| should be nonzero. |
| michael@0 | 44 | // |
| michael@0 | 45 | // Note that this is a variation of |RandBytes| with a different return type. |
| michael@0 | 46 | // |
| michael@0 | 47 | // WARNING: |
| michael@0 | 48 | // Do not use for security-sensitive purposes. |
| michael@0 | 49 | // See crypto/ for cryptographically secure random number generation APIs. |
| michael@0 | 50 | BASE_EXPORT std::string RandBytesAsString(size_t length); |
| michael@0 | 51 | |
| michael@0 | 52 | #if defined(OS_POSIX) |
| michael@0 | 53 | BASE_EXPORT int GetUrandomFD(); |
| michael@0 | 54 | #endif |
| michael@0 | 55 | |
| michael@0 | 56 | } // namespace base |
| michael@0 | 57 | |
| michael@0 | 58 | #endif // BASE_RAND_UTIL_H_ |
