1 /* 2 * Copyright (C) 2018 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 #ifndef HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_UTILS_H_ 18 #define HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_UTILS_H_ 19 20 #include <android/hardware/keymaster/4.0/types.h> 21 22 namespace android { 23 namespace hardware { 24 namespace keymaster { 25 namespace V4_0 { 26 27 /** 28 * Define a lexicographical ordering on HmacSharingParameters. The parameters to 29 * IKeymasterDevice::computeSharedHmac are required to be delivered in the order specified by this 30 * comparison operator. 31 */ 32 bool operator<(const HmacSharingParameters& a, const HmacSharingParameters& b); 33 34 namespace support { 35 36 inline static hidl_vec<uint8_t> blob2hidlVec(const uint8_t* data, const size_t length, 37 bool inPlace = true) { 38 hidl_vec<uint8_t> result; 39 result.setToExternal(const_cast<unsigned char*>(data), length, !inPlace); 40 return result; 41 } 42 43 inline static hidl_vec<uint8_t> blob2hidlVec(const std::string& value, bool inPlace = true) { 44 hidl_vec<uint8_t> result; 45 result.setToExternal(const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(value.data())), 46 static_cast<size_t>(value.size()), !inPlace); 47 return result; 48 } 49 50 inline static hidl_vec<uint8_t> blob2hidlVec(const std::vector<uint8_t>& blob, 51 bool inPlace = true) { 52 hidl_vec<uint8_t> result; 53 result.setToExternal(const_cast<uint8_t*>(blob.data()), static_cast<size_t>(blob.size()), 54 !inPlace); 55 return result; 56 } 57 58 HardwareAuthToken hidlVec2AuthToken(const hidl_vec<uint8_t>& buffer); 59 hidl_vec<uint8_t> authToken2HidlVec(const HardwareAuthToken& token); 60 61 } // namespace support 62 } // namespace V4_0 63 } // namespace keymaster 64 } // namespace hardware 65 } // namespace android 66 67 #endif // HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_UTILS_H_ 68
