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 14 namespace crypto { 15 class ECPrivateKey; 16 class RSAPrivateKey; 17 } 18 19 namespace net { 20 21 class X509Certificate; 22 23 namespace 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. 30 NET_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 40 NET_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. 66 NET_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) 83 class 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
