random/internal/randen_slow.h

0001 // Copyright 2017 The Abseil Authors.
0002 //
0003 // Licensed under the Apache License, Version 2.0 (the "License");
0004 // you may not use this file except in compliance with the License.
0005 // You may obtain a copy of the License at
0006 //
0007 //      https://www.apache.org/licenses/LICENSE-2.0
0008 //
0009 // Unless required by applicable law or agreed to in writing, software
0010 // distributed under the License is distributed on an "AS IS" BASIS,
0011 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0012 // See the License for the specific language governing permissions and
0013 // limitations under the License.
0014
0015 #ifndef ABSL_RANDOM_INTERNAL_RANDEN_SLOW_H_
0016 #define ABSL_RANDOM_INTERNAL_RANDEN_SLOW_H_
0017
0018 #include <cstddef>
0019
0020 #include "absl/base/config.h"
0021
0022 namespace absl {
0023 ABSL_NAMESPACE_BEGIN
0024 namespace random_internal {
0025
0026 // RANDen = RANDom generator or beetroots in Swiss High German.
0027 // RandenSlow implements the basic state manipulation methods for
0028 // architectures lacking AES hardware acceleration intrinsics.
0029 class RandenSlow {
0030  public:
0031   static void Generate(const void* keys, void* state_void);
0032   static void Absorb(const void* seed_void, void* state_void);
0033   static const void* GetKeys();
0034 };
0035
0036 }  // namespace random_internal
0037 ABSL_NAMESPACE_END
0038 }  // namespace absl
0039
0040 #endif  // ABSL_RANDOM_INTERNAL_RANDEN_SLOW_H_