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      1 // Copyright (c) 2011 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 #include "net/base/keygen_handler.h"
      6 
      7 #include <openssl/ssl.h>
      8 
      9 #include "base/logging.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "crypto/openssl_util.h"
     12 #include "crypto/rsa_private_key.h"
     13 #include "crypto/scoped_openssl_types.h"
     14 #include "net/base/openssl_private_key_store.h"
     15 
     16 namespace net {
     17 
     18 std::string KeygenHandler::GenKeyAndSignChallenge() {
     19   scoped_ptr<crypto::RSAPrivateKey> key(
     20       crypto::RSAPrivateKey::Create(key_size_in_bits_));
     21   EVP_PKEY* pkey = key->key();
     22 
     23   if (stores_key_)
     24     OpenSSLPrivateKeyStore::StoreKeyPair(url_, pkey);
     25 
     26   crypto::ScopedOpenSSL<NETSCAPE_SPKI, NETSCAPE_SPKI_free>::Type spki(
     27       NETSCAPE_SPKI_new());
     28   ASN1_STRING_set(spki.get()->spkac->challenge,
     29                   challenge_.data(), challenge_.size());
     30   NETSCAPE_SPKI_set_pubkey(spki.get(), pkey);
     31   // Using MD5 as this is what is required in HTML5, even though the SPKI
     32   // structure does allow the use of a SHA-1 signature.
     33   NETSCAPE_SPKI_sign(spki.get(), pkey, EVP_md5());
     34   char* spkistr = NETSCAPE_SPKI_b64_encode(spki.get());
     35 
     36   std::string result(spkistr);
     37   OPENSSL_free(spkistr);
     38 
     39   return result;
     40 }
     41 
     42 }  // namespace net
     43 
     44