net/cert/multi_log_ct_verifier.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_CERT_MULTI_LOG_CT_VERIFIER_H_
   6 #define NET_CERT_MULTI_LOG_CT_VERIFIER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "net/base/net_export.h"
  13 #include "net/cert/ct_verifier.h"
  14 #include "net/cert/signed_certificate_timestamp.h"
  15
  16 namespace net {
  17
  18 namespace ct {
  19 struct LogEntry;
  20 }  // namespace ct
  21
  22 class CTLogVerifier;
  23
  24 // A Certificate Transparency verifier that can verify Signed Certificate
  25 // Timestamps from multiple logs.
  26 // There should be a global instance of this class and for all known logs,
  27 // AddLog should be called with a CTLogVerifier (which is created from the
  28 // log's public key).
  29 class NET_EXPORT MultiLogCTVerifier : public CTVerifier {
  30  public:
  31   MultiLogCTVerifier();
  32   ~MultiLogCTVerifier() override;
  33
  34   void AddLogs(const std::vector<scoped_refptr<CTLogVerifier>>& log_verifiers);
  35
  36   // CTVerifier implementation:
  37   int Verify(X509Certificate* cert,
  38              const std::string& stapled_ocsp_response,
  39              const std::string& sct_list_from_tls_extension,
  40              ct::CTVerifyResult* result,
  41              const BoundNetLog& net_log) override;
  42
  43   void SetObserver(Observer* observer) override;
  44
  45  private:
  46   // Verify a list of SCTs from |encoded_sct_list| over |expected_entry|,
  47   // placing the verification results in |result|. The SCTs in the list
  48   // come from |origin| (as will be indicated in the origin field of each SCT).
  49   bool VerifySCTs(const std::string& encoded_sct_list,
  50                   const ct::LogEntry& expected_entry,
  51                   ct::SignedCertificateTimestamp::Origin origin,
  52                   X509Certificate* cert,
  53                   ct::CTVerifyResult* result);
  54
  55   // Verifies a single, parsed SCT against all logs.
  56   bool VerifySingleSCT(scoped_refptr<ct::SignedCertificateTimestamp> sct,
  57                        const ct::LogEntry& expected_entry,
  58                        X509Certificate* cert,
  59                        ct::CTVerifyResult* result);
  60
  61   // Mapping from a log's ID to the verifier for this log.
  62   // A log's ID is the SHA-256 of the log's key, as defined in section 3.2.
  63   // of RFC6962.
  64   std::map<std::string, scoped_refptr<CTLogVerifier>> logs_;
  65
  66   Observer* observer_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(MultiLogCTVerifier);
  69 };
  70
  71 }  // namespace net
  72
  73 #endif  // NET_CERT_MULTI_LOG_CT_VERIFIER_H_