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      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 "net/android/network_library.h"
     14 
     15 namespace net {
     16 
     17 bool OpenSSLPrivateKeyStore::StoreKeyPair(const GURL& url,
     18                                           EVP_PKEY* pkey) {
     19   // Always clear openssl errors on exit.
     20   crypto::OpenSSLErrStackTracer err_trace(FROM_HERE);
     21 
     22   // Important: Do not use i2d_PublicKey() here, which returns data in
     23   // PKCS#1 format, use i2d_PUBKEY() which returns it as DER-encoded
     24   // SubjectPublicKeyInfo (X.509), as expected by the platform.
     25   unsigned char* public_key = NULL;
     26   int public_len = i2d_PUBKEY(pkey, &public_key);
     27 
     28   // Important: Do not use i2d_PrivateKey() here, it returns data
     29   // in a format that is incompatible with what the platform expects.
     30   unsigned char* private_key = NULL;
     31   int private_len = 0;
     32   crypto::ScopedOpenSSL<
     33       PKCS8_PRIV_KEY_INFO,
     34       PKCS8_PRIV_KEY_INFO_free> 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
     52