// 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_KEYGEN_HANDLER_H_
#define NET_BASE_KEYGEN_HANDLER_H_
#include <string>
#include "base/callback_forward.h"
#include "base/memory/scoped_ptr.h"
#include "build/build_config.h"
#include "net/base/net_export.h"
#include "url/gurl.h"
namespace crypto {
class NSSCryptoModuleDelegate;
}
namespace net {
// This class handles keypair generation for generating client
// certificates via the <keygen> tag.
// <http://dev.w3.org/html5/spec/Overview.html#the-keygen-element>
// <https://developer.mozilla.org/En/HTML/HTML_Extensions/KEYGEN_Tag>
class NET_EXPORT KeygenHandler {
public:
// Creates a handler that will generate a key with the given key size and
// incorporate the |challenge| into the Netscape SPKAC structure. The request
// for the key originated from |url|.
KeygenHandler(int key_size_in_bits,
const std::string& challenge,
const GURL& url);
~KeygenHandler();
// Actually generates the key-pair and the cert request (SPKAC), and returns
// a base64-encoded string suitable for use as the form value of <keygen>.
std::string GenKeyAndSignChallenge();
// Exposed only for unit tests.
void set_stores_key(bool store) { stores_key_ = store;}
#if defined(USE_NSS)
// Register the delegate to be used to get the token to store the key in, and
// to get the password if the token is unauthenticated.
// GenKeyAndSignChallenge runs on a worker thread, so using a blocking
// password callback is okay here.
void set_crypto_module_delegate(
scoped_ptr<crypto::NSSCryptoModuleDelegate> delegate);
#endif // defined(USE_NSS)
private:
int key_size_in_bits_; // key size in bits (usually 2048)
std::string challenge_; // challenge string sent by server
GURL url_; // the URL that requested the key
bool stores_key_; // should the generated key-pair be stored persistently?
#if defined(USE_NSS)
// The callback for requesting a password to the PKCS#11 token.
scoped_ptr<crypto::NSSCryptoModuleDelegate> crypto_module_delegate_;
#endif // defined(USE_NSS)
};
} // namespace net
#endif // NET_BASE_KEYGEN_HANDLER_H_