1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://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, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #pragma once 16 #include <array> 17 #include <cstdint> 18 19 namespace bt { 20 21 // Represents a 128-bit (16-octet) unsigned integer. This is commonly used for 22 // encryption keys and UUID values. 23 constexpr size_t kUInt128Size = 16; 24 using UInt128 = std::array<uint8_t, kUInt128Size>; 25 26 static_assert(sizeof(UInt128) == kUInt128Size, 27 "UInt128 must take up exactly 16 bytes"); 28 29 } // namespace bt 30