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