1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/chromium/base/rand_util.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,58 @@
1.4 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#ifndef BASE_RAND_UTIL_H_
1.9 +#define BASE_RAND_UTIL_H_
1.10 +
1.11 +#include <string>
1.12 +
1.13 +#include "base/base_export.h"
1.14 +#include "base/basictypes.h"
1.15 +
1.16 +namespace base {
1.17 +
1.18 +// Returns a random number in range [0, kuint64max]. Thread-safe.
1.19 +BASE_EXPORT uint64 RandUint64();
1.20 +
1.21 +// Returns a random number between min and max (inclusive). Thread-safe.
1.22 +BASE_EXPORT int RandInt(int min, int max);
1.23 +
1.24 +// Returns a random number in range [0, range). Thread-safe.
1.25 +//
1.26 +// Note that this can be used as an adapter for std::random_shuffle():
1.27 +// Given a pre-populated |std::vector<int> myvector|, shuffle it as
1.28 +// std::random_shuffle(myvector.begin(), myvector.end(), base::RandGenerator);
1.29 +BASE_EXPORT uint64 RandGenerator(uint64 range);
1.30 +
1.31 +// Returns a random double in range [0, 1). Thread-safe.
1.32 +BASE_EXPORT double RandDouble();
1.33 +
1.34 +// Given input |bits|, convert with maximum precision to a double in
1.35 +// the range [0, 1). Thread-safe.
1.36 +BASE_EXPORT double BitsToOpenEndedUnitInterval(uint64 bits);
1.37 +
1.38 +// Fills |output_length| bytes of |output| with random data.
1.39 +//
1.40 +// WARNING:
1.41 +// Do not use for security-sensitive purposes.
1.42 +// See crypto/ for cryptographically secure random number generation APIs.
1.43 +BASE_EXPORT void RandBytes(void* output, size_t output_length);
1.44 +
1.45 +// Fills a string of length |length| with with random data and returns it.
1.46 +// |length| should be nonzero.
1.47 +//
1.48 +// Note that this is a variation of |RandBytes| with a different return type.
1.49 +//
1.50 +// WARNING:
1.51 +// Do not use for security-sensitive purposes.
1.52 +// See crypto/ for cryptographically secure random number generation APIs.
1.53 +BASE_EXPORT std::string RandBytesAsString(size_t length);
1.54 +
1.55 +#if defined(OS_POSIX)
1.56 +BASE_EXPORT int GetUrandomFD();
1.57 +#endif
1.58 +
1.59 +} // namespace base
1.60 +
1.61 +#endif // BASE_RAND_UTIL_H_
