multi_log_ct_verifier.h revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7 
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/linked_ptr.h"
12#include "base/memory/scoped_ptr.h"
13#include "net/base/net_export.h"
14#include "net/cert/ct_verifier.h"
15#include "net/cert/signed_certificate_timestamp.h"
16
17namespace net {
18
19namespace ct {
20struct LogEntry;
21}  // namespace ct
22
23class CTLogVerifier;
24
25// A Certificate Transparency verifier that can verify Signed Certificate
26// Timestamps from multiple logs.
27// There should be a global instance of this class and for all known logs,
28// AddLog should be called with a CTLogVerifier (which is created from the
29// log's public key).
30class NET_EXPORT MultiLogCTVerifier : public CTVerifier {
31 public:
32  MultiLogCTVerifier();
33  virtual ~MultiLogCTVerifier();
34
35  void AddLog(scoped_ptr<CTLogVerifier> log_verifier);
36
37  // CTVerifier implementation:
38  virtual int Verify(X509Certificate* cert,
39                     const std::string& stapled_ocsp_response,
40                     const std::string& sct_list_from_tls_extension,
41                     ct::CTVerifyResult* result,
42                     const BoundNetLog& net_log) OVERRIDE;
43
44 private:
45  // Mapping from a log's ID to the verifier for this log.
46  // A log's ID is the SHA-256 of the log's key, as defined in section 3.2.
47  // of RFC6962.
48  typedef std::map<std::string, linked_ptr<CTLogVerifier> > IDToLogMap;
49
50  // Verify a list of SCTs from |encoded_sct_list| over |expected_entry|,
51  // placing the verification results in |result|. The SCTs in the list
52  // come from |origin| (as will be indicated in the origin field of each SCT).
53  bool VerifySCTs(const std::string& encoded_sct_list,
54                  const ct::LogEntry& expected_entry,
55                  ct::SignedCertificateTimestamp::Origin origin,
56                  ct::CTVerifyResult* result);
57
58  // Verifies a single, parsed SCT against all logs.
59  bool VerifySingleSCT(
60      scoped_refptr<ct::SignedCertificateTimestamp> sct,
61      const ct::LogEntry& expected_entry,
62      ct::CTVerifyResult* result);
63
64  IDToLogMap logs_;
65
66  DISALLOW_COPY_AND_ASSIGN(MultiLogCTVerifier);
67};
68
69}  // namespace net
70
71#endif  // NET_CERT_MULTI_LOG_CT_VERIFIER_H_
72