Extract Certificate Transparency SCTs from stapled OCSP responses

net/cert/ct_objects_extractor.h

 // 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_OBJECTS_EXTRACTOR_H_
 #define NET_CERT_CT_OBJECTS_EXTRACTOR_H_
 
 #include <string>
 
 #include "net/base/net_export.h"
@@ skipping 27 matching lines @@
 
 // Obtains an X509Chain log entry for |leaf|, an X.509v3 certificate that
 // is not expected to contain an X.509v3 extension with the OID
 // 1.3.6.1.4.1.11129.2.4.2 (meaning a certificate without an embedded SCT).
 // On success, fills |result| with the data for an X509Chain log entry and
 // returns true.
 // The filled |*result| should be verified using ct::CTLogVerifier::Verify
 NET_EXPORT_PRIVATE bool GetX509LogEntry(X509Certificate::OSCertHandle leaf,
                                         LogEntry* result);
 
+// Extracts a SignedCertificateTimestampList that has been embedded within
+// an OCSP response as an extension with the OID 1.3.6.1.4.1.11129.2.4.5.
+// If the extension is present, and the response matches the issuer and
+// serial number, returns true, updating |*sct_list| to contain
+// the encoded list, minus the DER encoding necessary for the extension.
+// |*sct_list| can then be further decoded with ct::DecodeSCTList.
+NET_EXPORT_PRIVATE bool ExtractSCTListFromOCSPResponse(
+    X509Certificate::OSCertHandle issuer,
+    const std::string& cert_serial_number,
+    const std::string& ocsp_response,
+    std::string* sct_list);
+
 }  // namespace ct
 
 }  // namespace net
 
 #endif  // NET_CERT_CT_OBJECTS_EXTRACTOR_H_