1*e7b1675dSTing-Kang Chang // Copyright 2019 Google LLC 2*e7b1675dSTing-Kang Chang // 3*e7b1675dSTing-Kang Chang // Licensed under the Apache License, Version 2.0 (the "License"); 4*e7b1675dSTing-Kang Chang // you may not use this file except in compliance with the License. 5*e7b1675dSTing-Kang Chang // You may obtain a copy of the License at 6*e7b1675dSTing-Kang Chang // 7*e7b1675dSTing-Kang Chang // http://www.apache.org/licenses/LICENSE-2.0 8*e7b1675dSTing-Kang Chang // 9*e7b1675dSTing-Kang Chang // Unless required by applicable law or agreed to in writing, software 10*e7b1675dSTing-Kang Chang // distributed under the License is distributed on an "AS IS" BASIS, 11*e7b1675dSTing-Kang Chang // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12*e7b1675dSTing-Kang Chang // See the License for the specific language governing permissions and 13*e7b1675dSTing-Kang Chang // limitations under the License. 14*e7b1675dSTing-Kang Chang // 15*e7b1675dSTing-Kang Chang /////////////////////////////////////////////////////////////////////////////// 16*e7b1675dSTing-Kang Chang 17*e7b1675dSTing-Kang Chang #ifndef TINK_SUBTLE_SUBTLE_UTIL_H_ 18*e7b1675dSTing-Kang Chang #define TINK_SUBTLE_SUBTLE_UTIL_H_ 19*e7b1675dSTing-Kang Chang 20*e7b1675dSTing-Kang Chang #include <cstdint> 21*e7b1675dSTing-Kang Chang #include <string> 22*e7b1675dSTing-Kang Chang 23*e7b1675dSTing-Kang Chang namespace crypto { 24*e7b1675dSTing-Kang Chang namespace tink { 25*e7b1675dSTing-Kang Chang namespace subtle { 26*e7b1675dSTing-Kang Chang 27*e7b1675dSTing-Kang Chang // Returnes big endian order representation of `val`. 28*e7b1675dSTing-Kang Chang std::string BigEndian32(uint32_t val); 29*e7b1675dSTing-Kang Chang 30*e7b1675dSTing-Kang Chang // Like string::resize, but the newly allocated storage may be left 31*e7b1675dSTing-Kang Chang // uninitialized. C++11 provides no portable way to do this. Using this function 32*e7b1675dSTing-Kang Chang // allows us to do this on a per compiler/library version basis. 33*e7b1675dSTing-Kang Chang void ResizeStringUninitialized(std::string* s, size_t new_size); 34*e7b1675dSTing-Kang Chang 35*e7b1675dSTing-Kang Chang } // namespace subtle 36*e7b1675dSTing-Kang Chang } // namespace tink 37*e7b1675dSTing-Kang Chang } // namespace crypto 38*e7b1675dSTing-Kang Chang 39*e7b1675dSTing-Kang Chang #endif // TINK_SUBTLE_SUBTLE_UTIL_H_ 40