net/cert/x509_util.h

   1 // Copyright (c) 2012 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_X509_UTIL_H_
   6 #define NET_CERT_X509_UTIL_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/time.h"
  12 #include "net/base/net_export.h"
  13
  14 namespace crypto {
  15 class ECPrivateKey;
  16 }
  17
  18 namespace net {
  19
  20 class X509Certificate;
  21
  22 namespace x509_util {
  23
  24 // Returns true if the times can be used to create an X.509 certificate.
  25 // Certificates can accept dates from Jan 1st, 1 to Dec 31, 9999.  A bug in NSS
  26 // limited the range to 1950-9999
  27 // (https://bugzilla.mozilla.org/show_bug.cgi?id=786531).  This function will
  28 // return whether it is supported by the currently used crypto library.
  29 NET_EXPORT_PRIVATE bool IsSupportedValidityRange(base::Time not_valid_before,
  30                                                  base::Time not_valid_after);
  31
  32 // Creates a server bound certificate containing the public key in |key|.
  33 // Domain, serial number and validity period are given as
  34 // parameters. The certificate is signed by the private key in |key|.
  35 // The hashing algorithm for the signature is SHA-1.
  36 //
  37 // See Internet Draft draft-balfanz-tls-obc-00 for more details:
  38 // http://tools.ietf.org/html/draft-balfanz-tls-obc-00
  39 NET_EXPORT_PRIVATE bool CreateDomainBoundCertEC(
  40     crypto::ECPrivateKey* key,
  41     const std::string& domain,
  42     uint32 serial_number,
  43     base::Time not_valid_before,
  44     base::Time not_valid_after,
  45     std::string* der_cert);
  46
  47 // Comparator for use in STL algorithms that will sort client certificates by
  48 // order of preference.
  49 // Returns true if |a| is more preferable than |b|, allowing it to be used
  50 // with any algorithm that compares according to strict weak ordering.
  51 //
  52 // Criteria include:
  53 // - Prefer certificates that have a longer validity period (later
  54 //   expiration dates)
  55 // - If equal, prefer certificates that were issued more recently
  56 // - If equal, prefer shorter chains (if available)
  57 class NET_EXPORT_PRIVATE ClientCertSorter {
  58  public:
  59   ClientCertSorter();
  60
  61   bool operator()(
  62       const scoped_refptr<X509Certificate>& a,
  63       const scoped_refptr<X509Certificate>& b) const;
  64
  65  private:
  66   base::Time now_;
  67 };
  68
  69 } // namespace x509_util
  70
  71 } // namespace net
  72
  73 #endif  // NET_CERT_X509_UTIL_H_