/* * Copyright (c) 2024 Project CHIP Authors * All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @brief The file implements the Matter Check-In counter */ #include #include namespace chip { namespace Protocols { namespace SecureChannel { CHIP_ERROR CheckInCounter::InvalidateHalfCheckInCounterValues() { // Increases the current counter value by half of its maximum range and updates underlying counter storage. // CheckInCounter is allowed to roll over. ReturnErrorOnFailure(AdvanceBy((UINT32_MAX / 2))); return CHIP_NO_ERROR; } CHIP_ERROR CheckInCounter::InvalidateAllCheckInCounterValues() { // Increase current counter value by its maximum value to mimic N -> UINT32_MAX -> N-1 to invalidate all Check-In counter // values. CheckInCounter is allowed to roll over. ReturnErrorOnFailure(AdvanceBy(UINT32_MAX)); return CHIP_NO_ERROR; } } // namespace SecureChannel } // namespace Protocols } // namespace chip