| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CRYPTO_UNEXPORTABLE_KEY_METRICS_H_ |
| #define CRYPTO_UNEXPORTABLE_KEY_METRICS_H_ |
| |
| #include<string> |
| |
| #include"crypto/crypto_export.h" |
| #include"crypto/unexportable_key.h" |
| |
| namespace crypto{ |
| |
| enumclassTPMOperation{ |
| // An operation to sign data with a TPM key. |
| kMessageSigning, |
| // An operation to verify a TPM signature. |
| kMessageVerify, |
| // An operation to create a TPM key from a wrapped key or a similar |
| // representation identifying a TPM key. |
| kWrappedKeyCreation, |
| // An operation to create a new TPM-protected key. |
| kNewKeyCreation, |
| // An operation to export a wrapped key (or a similar representation |
| // identifying a TPM key) from an existing TPM key. |
| kWrappedKeyExport, |
| }; |
| |
| // Converts the given `operation` to a string representation. |
| CRYPTO_EXPORT std::stringOperationToString(TPMOperation operation); |
| |
| // Converts the given `algorithm` to a string representation. |
| CRYPTO_EXPORT std::stringAlgorithmToString( |
| SignatureVerifier::SignatureAlgorithm algorithm); |
| |
| // Records UMA metrics of TPM availability, latency and successful usage. |
| // Does the work on a new background task. |
| CRYPTO_EXPORTvoidMaybeMeasureTpmOperations( |
| UnexportableKeyProvider::Config config); |
| |
| // internal namespace to be used by tests only |
| namespaceinternal{ |
| |
| // Note that values here are used in a recorded histogram. Don't change |
| // the values of existing members. |
| enumclassTPMSupport{ |
| kNone=0, |
| kRSA=1, |
| kECDSA=2, |
| kMaxValue=2, |
| }; |
| |
| // Note that values here are used in a recorded histogram. Don't change |
| // the values of existing members. |
| enumclassTPMType{ |
| kNone=0, |
| kHW=1, |
| kVirtual=2, |
| kBoth=3, |
| kMaxValue=3, |
| }; |
| |
| // Exported for testing |
| CRYPTO_EXPORTvoidMeasureTpmOperationsInternalForTesting(); |
| }// namespace internal |
| |
| }// namespace crypto |
| |
| #endif// CRYPTO_UNEXPORTABLE_KEY_METRICS_H_ |
