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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_CERT_X509_UTIL_H_
#define NET_CERT_X509_UTIL_H_
#include <string>
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "net/base/net_export.h"
namespace crypto {
class ECPrivateKey;
class RSAPrivateKey;
}
namespace net {
class X509Certificate;
namespace x509_util {
// Returns true if the times can be used to create an X.509 certificate.
// Certificates can accept dates from Jan 1st, 1 to Dec 31, 9999. A bug in NSS
// limited the range to 1950-9999
// (https://bugzilla.mozilla.org/show_bug.cgi?id=786531). This function will
// return whether it is supported by the currently used crypto library.
NET_EXPORT_PRIVATE bool IsSupportedValidityRange(base::Time not_valid_before,
base::Time not_valid_after);
// Creates a server bound certificate containing the public key in |key|.
// Domain, serial number and validity period are given as
// parameters. The certificate is signed by the private key in |key|.
// The hashing algorithm for the signature is SHA-1.
//
// See Internet Draft draft-balfanz-tls-obc-00 for more details:
// http://tools.ietf.org/html/draft-balfanz-tls-obc-00
NET_EXPORT_PRIVATE bool CreateDomainBoundCertEC(
crypto::ECPrivateKey* key,
const std::string& domain,
uint32 serial_number,
base::Time not_valid_before,
base::Time not_valid_after,
std::string* der_cert);
// Create a self-signed certificate containing the public key in |key|.
// Subject, serial number and validity period are given as parameters.
// The certificate is signed by the private key in |key|. The hashing
// algorithm for the signature is SHA-1.
//
// |subject| is a distinguished name defined in RFC4514.
//
// An example:
// CN=Michael Wong,O=FooBar Corporation,DC=foobar,DC=com
//
// SECURITY WARNING
//
// Using self-signed certificates has the following security risks:
// 1. Encryption without authentication and thus vulnerable to
// man-in-the-middle attacks.
// 2. Self-signed certificates cannot be revoked.
//
// Use this certificate only after the above risks are acknowledged.
NET_EXPORT bool CreateSelfSignedCert(crypto::RSAPrivateKey* key,
const std::string& subject,
uint32 serial_number,
base::Time not_valid_before,
base::Time not_valid_after,
std::string* der_cert);
// Comparator for use in STL algorithms that will sort client certificates by
// order of preference.
// Returns true if |a| is more preferable than |b|, allowing it to be used
// with any algorithm that compares according to strict weak ordering.
//
// Criteria include:
// - Prefer certificates that have a longer validity period (later
// expiration dates)
// - If equal, prefer certificates that were issued more recently
// - If equal, prefer shorter chains (if available)
class NET_EXPORT_PRIVATE ClientCertSorter {
public:
ClientCertSorter();
bool operator()(
const scoped_refptr<X509Certificate>& a,
const scoped_refptr<X509Certificate>& b) const;
private:
base::Time now_;
};
} // namespace x509_util
} // namespace net
#endif // NET_CERT_X509_UTIL_H_
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