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47 lines
1.1 KiB
C
47 lines
1.1 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 CRYPTO_UNEXPORTABLE_KEY_METRICS_H_
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#define CRYPTO_UNEXPORTABLE_KEY_METRICS_H_
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#include "crypto/crypto_export.h"
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#include "crypto/unexportable_key.h"
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namespace crypto {
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// Records UMA metrics of TPM availability, latency and successful usage.
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// Does the work on a new background task.
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CRYPTO_EXPORT void MaybeMeasureTpmOperations(
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UnexportableKeyProvider::Config config);
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// internal namespace to be used by tests only
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namespace internal {
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// Note that values here are used in a recorded histogram. Don't change
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// the values of existing members.
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enum class TPMSupport {
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kNone = 0,
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kRSA = 1,
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kECDSA = 2,
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kMaxValue = 2,
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};
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// Note that values here are used in a recorded histogram. Don't change
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// the values of existing members.
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enum class TPMType {
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kNone = 0,
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kHW = 1,
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kVirtual = 2,
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kBoth = 3,
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kMaxValue = 3,
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};
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// Exported for testing
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CRYPTO_EXPORT void MeasureTpmOperationsInternalForTesting();
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} // namespace internal
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} // namespace crypto
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#endif // CRYPTO_UNEXPORTABLE_KEY_METRICS_H_
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