41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
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// Copyright 2022 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_CERT_PKI_SIGNATURE_VERIFY_CACHE_H_
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#define NET_CERT_PKI_SIGNATURE_VERIFY_CACHE_H_
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#include <string>
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namespace net {
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class NET_EXPORT SignatureVerifyCache {
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public:
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enum class Value {
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kValid, // Cached as a valid signature result.
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kInvalid, // Cached as an invalid signature result.
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kUnknown, // Cache has no information.
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};
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virtual ~SignatureVerifyCache() = default;
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// This interface uses a const std::string reference instead of
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// std::string_view because any implementation that may reasonably want to use
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// std::unordered_map or similar can run into problems with std::hash before
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// C++20. (https://en.cppreference.com/w/cpp/container/unordered_map/find)
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// |Store| is called to store the result of a verification for |key| as kValid
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// or kInvalid after a signature check.
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virtual void Store(const std::string& key, Value value) = 0;
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// |Check| is called to fetch a cached value for a verification for |key|. If
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// the result is kValid, or kInvalid, signature checking is skipped and the
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// corresponding cached result is used. If the result is kUnknown signature
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// checking is performed and the corresponding result saved using |Store|.
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virtual Value Check(const std::string& key) = 0;
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};
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} // namespace net
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#endif // NET_CERT_PKI_SIGNATURE_VERIFY_CACHE_H_
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