1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "apexd_verity.h" 18 19 #include <iomanip> 20 #include <sstream> 21 #include <string> 22 23 namespace android { 24 namespace apex { 25 BytesToHex(const uint8_t * bytes,size_t bytes_len)26std::string BytesToHex(const uint8_t* bytes, size_t bytes_len) { 27 std::ostringstream s; 28 29 s << std::hex << std::setfill('0'); 30 for (size_t i = 0; i < bytes_len; i++) { 31 s << std::setw(2) << static_cast<int>(bytes[i]); 32 } 33 return s.str(); 34 } 35 36 } // namespace apex 37 } // namespace android 38