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6e3a83b61f
- Allow checksums to verify data larger than their internal state. This facilitates using a CRC16 in a uint32_t. - Move checksum functions to the EntryHeader class, since it ultimately stores the checksums and is included with it. - Enable one checksum test. Further tests are needed. - Make some tweaks to the Get overload for objects. Change-Id: I989b72905e140794f75c8f8619aaab1623f6f195
34 lines
990 B
C++
34 lines
990 B
C++
// Copyright 2020 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_kvs/checksum.h"
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#include <cstring>
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namespace pw::kvs {
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using std::byte;
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Status ChecksumAlgorithm::Verify(span<const byte> checksum) const {
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if (checksum.size() < size_bytes()) {
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return Status::INVALID_ARGUMENT;
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}
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if (std::memcmp(state_.data(), checksum.data(), size_bytes()) != 0) {
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return Status::DATA_LOSS;
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}
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return Status::OK;
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}
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} // namespace pw::kvs
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