| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NET_CERT_CT_VERIFIER_H_ |
| #define NET_CERT_CT_VERIFIER_H_ |
| |
| #include "base/strings/string_piece.h" |
| #include "net/base/net_export.h" |
| #include "net/cert/signed_certificate_timestamp_and_status.h" |
| |
| namespace net { |
| |
| class NetLogWithSource; |
| class X509Certificate; |
| |
| // Interface for verifying Signed Certificate Timestamps over a certificate. |
| class NET_EXPORT CTVerifier { |
| public: |
| class NET_EXPORT Observer { |
| public: |
| // Called for each Signed Certificate Timestamp from a known log that vas |
| // verified successfully (i.e. the signature verifies). |sct| is the |
| // Signed Certificate Timestamp, |cert| is the certificate it applies to. |
| // The certificate is needed to calculate the hash of the log entry, |
| // necessary for checking inclusion in the log. |
| // Note: The observer (whose implementation is expected to exist outside |
| // net/) may store the observed |cert| and |sct|. |
| virtual void OnSCTVerified(X509Certificate* cert, |
| const ct::SignedCertificateTimestamp* sct) = 0; |
| |
| protected: |
| virtual ~Observer() {} |
| }; |
| |
| virtual ~CTVerifier() {} |
| |
| // Verifies SCTs embedded in the certificate itself, SCTs embedded in a |
| // stapled OCSP response, and SCTs obtained via the |
| // signed_certificate_timestamp TLS extension on the given |cert|. |
| // A certificate is permitted but not required to use multiple sources for |
| // SCTs. It is expected that most certificates will use only one source |
| // (embedding, TLS extension or OCSP stapling). If no stapled OCSP response |
| // is available, |stapled_ocsp_response| should be an empty string. If no SCT |
| // TLS extension was negotiated, |sct_list_from_tls_extension| should be an |
| // empty string. |output_scts| will be cleared and filled with the SCTs |
| // present, if any, along with their verification results. |
| virtual void Verify(X509Certificate* cert, |
| base::StringPiece stapled_ocsp_response, |
| base::StringPiece sct_list_from_tls_extension, |
| SignedCertificateTimestampAndStatusList* output_scts, |
| const NetLogWithSource& net_log) = 0; |
| |
| // Registers |observer| to receive notifications of validated SCTs. Does not |
| // take ownership of the observer as the observer may be performing |
| // URLRequests which have to be cancelled before this object is destroyed. |
| // Setting |observer| to nullptr has the effect of stopping all notifications. |
| virtual void SetObserver(Observer* observer) = 0; |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_CERT_CT_VERIFIER_H_ |