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// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// A RAPPOR random implementation using bytes from a file like /dev/urandom or
// /dev/random.
#ifndef UNIX_KERNEL_RAND_IMPL_H_
#define UNIX_KERNEL_RAND_IMPL_H_
#include <stdint.h> // uint8_t
#include <stdio.h> // FILE*
#include "rappor_deps.h"
namespace rappor {
class UnixKernelRand : public IrrRandInterface {
public:
explicit UnixKernelRand(FILE* fp)
: fp_(fp) {
}
virtual ~UnixKernelRand() {}
virtual bool GetMask(float prob, int num_bits, Bits* mask_out) const;
private:
FILE* fp_; // open device, e.g. /dev/urandom
};
} // namespace rappor
#endif // UNIX_KERNEL_RAND_IMPL_H_
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