net/base/openssl_private_key_store_android.cc

   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 #include "net/base/openssl_private_key_store.h"
   6
   7 #include <openssl/evp.h>
   8 #include <openssl/x509.h>
   9
  10 #include "base/logging.h"
  11 #include "base/memory/singleton.h"
  12 #include "crypto/openssl_util.h"
  13 #include "crypto/scoped_openssl_types.h"
  14 #include "net/android/network_library.h"
  15
  16 namespace net {
  17
  18 bool OpenSSLPrivateKeyStore::StoreKeyPair(const GURL& url,
  19                                           EVP_PKEY* pkey) {
  20   // Always clear openssl errors on exit.
  21   crypto::OpenSSLErrStackTracer err_trace(FROM_HERE);
  22
  23   // Important: Do not use i2d_PublicKey() here, which returns data in
  24   // PKCS#1 format, use i2d_PUBKEY() which returns it as DER-encoded
  25   // SubjectPublicKeyInfo (X.509), as expected by the platform.
  26   unsigned char* public_key = NULL;
  27   int public_len = i2d_PUBKEY(pkey, &public_key);
  28
  29   // Important: Do not use i2d_PrivateKey() here, it returns data
  30   // in a format that is incompatible with what the platform expects.
  31   unsigned char* private_key = NULL;
  32   int private_len = 0;
  33   crypto::ScopedOpenSSL<PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO_free>::Type
  34       pkcs8(EVP_PKEY2PKCS8(pkey));
  35   if (pkcs8.get() != NULL) {
  36     private_len = i2d_PKCS8_PRIV_KEY_INFO(pkcs8.get(), &private_key);
  37   }
  38   bool ret = false;
  39   if (public_len > 0 && private_len > 0) {
  40     ret = net::android::StoreKeyPair(
  41         static_cast<const uint8*>(public_key), public_len,
  42         static_cast<const uint8*>(private_key), private_len);
  43   }
  44   LOG_IF(ERROR, !ret) << "StoreKeyPair failed. pub len = " << public_len
  45                       << " priv len = " << private_len;
  46   OPENSSL_free(public_key);
  47   OPENSSL_free(private_key);
  48   return ret;
  49 }
  50
  51 }  // namespace net