text: /*
   * Copyright (C) 2013 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef CryptoKey_h
  #define CryptoKey_h
  
  #include "bindings/core/v8/ScriptWrappable.h"
  #include "modules/ModulesExport.h"
  #include "modules/crypto/NormalizeAlgorithm.h"
  #include "platform/heap/Handle.h"
  #include "public/platform/WebCryptoKey.h"
  #include "wtf/Forward.h"
  #include "wtf/text/WTFString.h"
  
  namespace blink {
  
  class CryptoResult;
  
  class MODULES_EXPORT CryptoKey final
      : public GarbageCollectedFinalized<CryptoKey>,
        public ScriptWrappable {
    DEFINE_WRAPPERTYPEINFO();
  
   public:
    static CryptoKey* create(const WebCryptoKey& key) {
      return new CryptoKey(key);
    }
  
    ~CryptoKey();
  
    String type() const;
    bool extractable() const;
    ScriptValue algorithm(ScriptState*);
    Vector<String> usages() const;
  
    const WebCryptoKey& key() const { return m_key; }
  
    // If the key cannot be used with the indicated algorithm, returns false
    // and completes the CryptoResult with an error.
    bool canBeUsedForAlgorithm(const WebCryptoAlgorithm&,
                               WebCryptoKeyUsage,
                               CryptoResult*) const;
  
    // On failure, these return false and complete the CryptoResult with an error.
    static bool parseFormat(const String&, WebCryptoKeyFormat&, CryptoResult*);
    static bool parseUsageMask(const Vector<String>&,
                               WebCryptoKeyUsageMask&,
                               CryptoResult*);
  
    DEFINE_INLINE_TRACE() {}
  
   protected:
    explicit CryptoKey(const WebCryptoKey&);
  
    const WebCryptoKey m_key;
  };
  
  }  // namespace blink
  
  #endif  // CryptoKey_h
  