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