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/time.h" 12#include "net/base/net_export.h" 13 14namespace crypto { 15class ECPrivateKey; 16class RSAPrivateKey; 17} 18 19namespace net { 20 21class X509Certificate; 22 23namespace x509_util { 24 25// Returns true if the times can be used to create an X.509 certificate. 26// Certificates can accept dates from Jan 1st, 1 to Dec 31, 9999. A bug in NSS 27// limited the range to 1950-9999 28// (https://bugzilla.mozilla.org/show_bug.cgi?id=786531). This function will 29// return whether it is supported by the currently used crypto library. 30NET_EXPORT_PRIVATE bool IsSupportedValidityRange(base::Time not_valid_before, 31 base::Time not_valid_after); 32 33// Creates a server bound certificate containing the public key in |key|. 34// Domain, serial number and validity period are given as 35// parameters. The certificate is signed by the private key in |key|. 36// The hashing algorithm for the signature is SHA-1. 37// 38// See Internet Draft draft-balfanz-tls-obc-00 for more details: 39// http://tools.ietf.org/html/draft-balfanz-tls-obc-00 40NET_EXPORT_PRIVATE bool CreateDomainBoundCertEC( 41 crypto::ECPrivateKey* key, 42 const std::string& domain, 43 uint32 serial_number, 44 base::Time not_valid_before, 45 base::Time not_valid_after, 46 std::string* der_cert); 47 48// Create a self-signed certificate containing the public key in |key|. 49// Subject, serial number and validity period are given as parameters. 50// The certificate is signed by the private key in |key|. The hashing 51// algorithm for the signature is SHA-1. 52// 53// |subject| is a distinguished name defined in RFC4514. 54// 55// An example: 56// CN=Michael Wong,O=FooBar Corporation,DC=foobar,DC=com 57// 58// SECURITY WARNING 59// 60// Using self-signed certificates has the following security risks: 61// 1. Encryption without authentication and thus vulnerable to 62// man-in-the-middle attacks. 63// 2. Self-signed certificates cannot be revoked. 64// 65// Use this certificate only after the above risks are acknowledged. 66NET_EXPORT bool CreateSelfSignedCert(crypto::RSAPrivateKey* key, 67 const std::string& subject, 68 uint32 serial_number, 69 base::Time not_valid_before, 70 base::Time not_valid_after, 71 std::string* der_cert); 72 73// Comparator for use in STL algorithms that will sort client certificates by 74// order of preference. 75// Returns true if |a| is more preferable than |b|, allowing it to be used 76// with any algorithm that compares according to strict weak ordering. 77// 78// Criteria include: 79// - Prefer certificates that have a longer validity period (later 80// expiration dates) 81// - If equal, prefer certificates that were issued more recently 82// - If equal, prefer shorter chains (if available) 83class NET_EXPORT_PRIVATE ClientCertSorter { 84 public: 85 ClientCertSorter(); 86 87 bool operator()( 88 const scoped_refptr<X509Certificate>& a, 89 const scoped_refptr<X509Certificate>& b) const; 90 91 private: 92 base::Time now_; 93}; 94 95} // namespace x509_util 96 97} // namespace net 98 99#endif // NET_CERT_X509_UTIL_H_ 100