content/child/webcrypto/openssl/key_openssl.h

   1 // Copyright 2014 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 #ifndef CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
   6 #define CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
   7
   8 #include <openssl/ossl_typ.h>
   9 #include <stdint.h>
  10 #include <vector>
  11
  12 #include "base/macros.h"
  13 #include "crypto/scoped_openssl_types.h"
  14 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
  15
  16 namespace content {
  17
  18 namespace webcrypto {
  19
  20 class CryptoData;
  21 class AsymKeyOpenSsl;
  22 class SymKeyOpenSsl;
  23
  24 // Base key class for all OpenSSL keys, used to safely cast between types. Each
  25 // key maintains a copy of its serialized form in either 'raw', 'pkcs8', or
  26 // 'spki' format. This is to allow structured cloning of keys synchronously from
  27 // the target Blink thread without having to lock access to the key.
  28 class KeyOpenSsl : public blink::WebCryptoKeyHandle {
  29  public:
  30   explicit KeyOpenSsl(const CryptoData& serialized_key_data);
  31   virtual ~KeyOpenSsl();
  32
  33   virtual SymKeyOpenSsl* AsSymKey();
  34   virtual AsymKeyOpenSsl* AsAsymKey();
  35
  36   const std::vector<uint8_t>& serialized_key_data() const {
  37     return serialized_key_data_;
  38   }
  39
  40  private:
  41   const std::vector<uint8_t> serialized_key_data_;
  42 };
  43
  44 class SymKeyOpenSsl : public KeyOpenSsl {
  45  public:
  46   virtual ~SymKeyOpenSsl();
  47   explicit SymKeyOpenSsl(const CryptoData& raw_key_data);
  48
  49   static SymKeyOpenSsl* Cast(const blink::WebCryptoKey& key);
  50
  51   virtual SymKeyOpenSsl* AsSymKey() OVERRIDE;
  52
  53   const std::vector<uint8_t>& raw_key_data() const {
  54     return serialized_key_data();
  55   }
  56
  57  private:
  58   DISALLOW_COPY_AND_ASSIGN(SymKeyOpenSsl);
  59 };
  60
  61 class AsymKeyOpenSsl : public KeyOpenSsl {
  62  public:
  63   virtual ~AsymKeyOpenSsl();
  64   AsymKeyOpenSsl(crypto::ScopedEVP_PKEY key,
  65                  const CryptoData& serialized_key_data);
  66
  67   static AsymKeyOpenSsl* Cast(const blink::WebCryptoKey& key);
  68
  69   virtual AsymKeyOpenSsl* AsAsymKey() OVERRIDE;
  70
  71   EVP_PKEY* key() { return key_.get(); }
  72
  73  private:
  74   crypto::ScopedEVP_PKEY key_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(AsymKeyOpenSsl);
  77 };
  78
  79 }  // namespace webcrypto
  80
  81 }  // namespace content
  82
  83 #endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_