1 // Copyright 2019 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 /////////////////////////////////////////////////////////////////////////////// 16 17 #ifndef TINK_SUBTLE_SUBTLE_UTIL_H_ 18 #define TINK_SUBTLE_SUBTLE_UTIL_H_ 19 20 #include <cstdint> 21 #include <string> 22 23 namespace crypto { 24 namespace tink { 25 namespace subtle { 26 27 // Returnes big endian order representation of `val`. 28 std::string BigEndian32(uint32_t val); 29 30 // Like string::resize, but the newly allocated storage may be left 31 // uninitialized. C++11 provides no portable way to do this. Using this function 32 // allows us to do this on a per compiler/library version basis. 33 void ResizeStringUninitialized(std::string* s, size_t new_size); 34 35 } // namespace subtle 36 } // namespace tink 37 } // namespace crypto 38 39 #endif // TINK_SUBTLE_SUBTLE_UTIL_H_ 40