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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef CryptoKey_h
     32 #define CryptoKey_h
     33 
     34 #include "bindings/core/v8/ScriptWrappable.h"
     35 #include "modules/crypto/NormalizeAlgorithm.h"
     36 #include "platform/heap/Handle.h"
     37 #include "public/platform/WebCryptoKey.h"
     38 #include "wtf/Forward.h"
     39 #include "wtf/text/WTFString.h"
     40 
     41 namespace blink {
     42 
     43 class CryptoResult;
     44 class KeyAlgorithm;
     45 
     46 class CryptoKey : public GarbageCollectedFinalized<CryptoKey>, public ScriptWrappable {
     47     DEFINE_WRAPPERTYPEINFO();
     48 public:
     49     static CryptoKey* create(const WebCryptoKey& key)
     50     {
     51         return new CryptoKey(key);
     52     }
     53 
     54     ~CryptoKey();
     55 
     56     String type() const;
     57     bool extractable() const;
     58     Vector<String> usages() const;
     59 
     60     const WebCryptoKey& key() const { return m_key; }
     61 
     62     // If the key cannot be used with the indicated algorithm, returns false
     63     // and completes the CryptoResult with an error.
     64     bool canBeUsedForAlgorithm(const WebCryptoAlgorithm&, WebCryptoOperation, CryptoResult*) const;
     65 
     66     // On failure, these return false and complete the CryptoResult with an error.
     67     static bool parseFormat(const String&, WebCryptoKeyFormat&, CryptoResult*);
     68     static bool parseUsageMask(const Vector<String>&, WebCryptoKeyUsageMask&, CryptoResult*);
     69 
     70     void trace(Visitor*) { }
     71 
     72 protected:
     73     explicit CryptoKey(const WebCryptoKey&);
     74 
     75     const WebCryptoKey m_key;
     76 };
     77 
     78 } // namespace blink
     79 
     80 #endif // CryptoKey_h
     81