| /* Copyright 2016 The TensorFlow Authors. 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. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_CORE_PLATFORM_STRONG_HASH_H_ |
| #define TENSORFLOW_CORE_PLATFORM_STRONG_HASH_H_ |
| |
| #include "tensorflow/core/platform/platform.h" |
| #include "tensorflow/core/platform/types.h" |
| |
| namespace tensorflow { |
| |
| // This is a strong keyed hash function interface for strings. |
| // The hash function is deterministic on the content of the string within the |
| // process. The key of the hash is an array of 2 uint64 elements. |
| // A strong hash makes it difficult, if not infeasible, to compute inputs that |
| // hash to the same bucket. |
| // |
| // Usage: |
| // uint64 key[2] = {123, 456}; |
| // string input = "input string"; |
| // uint64 hash_value = StrongKeyedHash(key, input); |
| // |
| uint64 StrongKeyedHash(const uint64 (&)[2], const string&); |
| |
| } // namespace tensorflow |
| |
| #if defined(PLATFORM_GOOGLE) |
| #include "tensorflow/core/platform/google/strong_hash.h" |
| #else |
| #include "tensorflow/core/platform/default/strong_hash.h" |
| #endif |
| |
| #endif // TENSORFLOW_CORE_PLATFORM_STRONG_HASH_H_ |