Support EC certs in OriginBoundCertService and OriginBoundCertStore.

net/base/origin_bound_cert_service.h

 // Copyright (c) 2011 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_BASE_ORIGIN_BOUND_CERT_SERVICE_H_
 #define NET_BASE_ORIGIN_BOUND_CERT_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <string>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
+#include "net/base/ssl_client_cert_type.h"
 
 namespace net {
 
 class OriginBoundCertServiceJob;
 class OriginBoundCertServiceWorker;
 class OriginBoundCertStore;
 
 // A class for creating and fetching origin bound certs.
 // Inherits from NonThreadSafe in order to use the function
 // |CalledOnValidThread|.
 class NET_EXPORT OriginBoundCertService
     : NON_EXPORTED_BASE(public base::NonThreadSafe) {
  public:
   // Opaque type used to cancel a request.
   typedef void* RequestHandle;
 
+  // Password used on EncryptedPrivateKeyInfo data stored in EC private_key
+  // values.  (This is not used to provide any security, but to workaround NSS
+  // being unable to import unencrypted PrivateKeyInfo for EC keys.)
+  static const char kEPKIPassword[];
+
   // This object owns origin_bound_cert_store.
   explicit OriginBoundCertService(
       OriginBoundCertStore* origin_bound_cert_store);
 
   ~OriginBoundCertService();
 
-  // TODO(rkn): Specify certificate type (RSA or DSA).
+  // Fetches the origin bound cert for the specified origin of the specified
+  // type if one exists and creates one otherwise. Returns OK if successful or
+  // an error code upon failure.
   //
-  // Fetches the origin bound cert for the specified origin if one exists
-  // and creates one otherwise. Returns OK if successful or an error code upon
-  // failure.
+  // |requested_types| is a list of the TLS ClientCertificateTypes the site will
+  // accept, ordered from most preferred to least preferred.  Types we don't
+  // support will be ignored. See ssl_client_cert_type.h.
   //
   // On successful completion, |private_key| stores a DER-encoded
-  // PrivateKeyInfo struct, and |cert| stores a DER-encoded certificate.
+  // PrivateKeyInfo struct, and |cert| stores a DER-encoded certificate, and
+  // |type| specifies the type of certificate that was returned.
   //
   // |callback| must not be null. ERR_IO_PENDING is returned if the operation
   // could not be completed immediately, in which case the result code will
   // be passed to the callback when available.
   //
   // If |out_req| is non-NULL, then |*out_req| will be filled with a handle to
   // the async request. This handle is not valid after the request has
   // completed.
-  int GetOriginBoundCert(const std::string& origin,
-                         std::string* private_key,
-                         std::string* cert,
-                         const CompletionCallback& callback,
-                         RequestHandle* out_req);
+  int GetOriginBoundCert(
+      const std::string& origin,
+      const std::vector<uint8>& requested_types,
+      SSLClientCertType* type,
+      std::string* private_key,
+      std::string* cert,
+      const CompletionCallback& callback,
+      RequestHandle* out_req);
 
   // Cancels the specified request. |req| is the handle returned by
   // GetOriginBoundCert(). After a request is canceled, its completion
   // callback will not be called.
   void CancelRequest(RequestHandle req);
 
   // Public only for unit testing.
   int cert_count();
   uint64 requests() const { return requests_; }
   uint64 cert_store_hits() const { return cert_store_hits_; }
   uint64 inflight_joins() const { return inflight_joins_; }
 
  private:
   friend class OriginBoundCertServiceWorker;  // Calls HandleResult.
 
   // On success, |private_key| stores a DER-encoded PrivateKeyInfo
   // struct, and |cert| stores a DER-encoded certificate. Returns
   // OK if successful and an error code otherwise.
   // |serial_number| is passed in because it is created with the function
   // base::RandInt, which opens the file /dev/urandom. /dev/urandom is opened
   // with a LazyInstance, which is not allowed on a worker thread.
   static int GenerateCert(const std::string& origin,
+                          SSLClientCertType type,
                           uint32 serial_number,
                           std::string* private_key,
                           std::string* cert);
 
   void HandleResult(const std::string& origin,
                     int error,
+                    SSLClientCertType type,
                     const std::string& private_key,
                     const std::string& cert);
 
   scoped_ptr<OriginBoundCertStore> origin_bound_cert_store_;
 
   // inflight_ maps from an origin to an active generation which is taking
   // place.
   std::map<std::string, OriginBoundCertServiceJob*> inflight_;
 
   uint64 requests_;
   uint64 cert_store_hits_;
   uint64 inflight_joins_;
 
   DISALLOW_COPY_AND_ASSIGN(OriginBoundCertService);
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_ORIGIN_BOUND_CERT_SERVICE_H_