WebCrypto: Add framework for AlgorithmIdentifier normalization.

public/platform/WebCryptoAlgorithmParams.h

 /*
  * 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
@@ skipping 10 matching lines @@
  * 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 WebDeviceMotionData_h
-#define WebDeviceMotionData_h
+#ifndef WebCryptoAlgorithmParams_h
+#define WebCryptoAlgorithmParams_h
 
 #include "WebCommon.h"
+#include "WebCryptoAlgorithm.h"
+#include "WebVector.h"
 
 namespace WebKit {
 
-#pragma pack(push, 1)
+// NOTE: For documentation on the meaning of each of the parameters see the
+//       Web crypto spec:
+//
+//       http://www.w3.org/TR/WebCryptoAPI
+//
+//       The parameters in the spec have the same name, minus the "WebCrypto" prefix.
 
-class WebDeviceMotionData {
+class WebCryptoAlgorithmParams {
 public:
-    WEBKIT_EXPORT WebDeviceMotionData();
-    ~WebDeviceMotionData() { }
+    WebCryptoAlgorithmParams(WebCryptoAlgorithmParamsType type)
+        : m_type(type)
+    {
+    }
 
-    double accelerationX;
-    double accelerationY;
-    double accelerationZ;
+    virtual ~WebCryptoAlgorithmParams() { }
 
-    double accelerationIncludingGravityX;
-    double accelerationIncludingGravityY;
-    double accelerationIncludingGravityZ;
+    WebCryptoAlgorithmParamsType type() const { return m_type; }
 
-    double rotationRateAlpha;
-    double rotationRateBeta;
-    double rotationRateGamma;
-
-    double interval;
-
-    bool hasAccelerationX : 1;
-    bool hasAccelerationY : 1;
-    bool hasAccelerationZ : 1;
-
-    bool hasAccelerationIncludingGravityX : 1;
-    bool hasAccelerationIncludingGravityY : 1;
-    bool hasAccelerationIncludingGravityZ : 1;
-
-    bool hasRotationRateAlpha : 1;
-    bool hasRotationRateBeta : 1;
-    bool hasRotationRateGamma : 1;
-
-    bool allAvailableSensorsAreActive : 1;
+private:
+    WebCryptoAlgorithmParamsType m_type;
 };
 
-#if WEBKIT_IMPLEMENTATION
-COMPILE_ASSERT(sizeof(WebDeviceMotionData) == (10 * sizeof(double) + 2 * sizeof(char)), WebDeviceMotionData_has_wrong_size);
-#endif
+class WebCryptoAesCbcParams : public WebCryptoAlgorithmParams {
+public:
+    WebCryptoAesCbcParams(unsigned char* iv, size_t ivSize)
+        : WebCryptoAlgorithmParams(WebCryptoAlgorithmParamsTypeAesCbcParams)
+        , m_iv(iv, ivSize)
+    {
+    }
 
-#pragma pack(pop)
+    const WebVector<unsigned char>& iv() const { return m_iv; }
+
+private:
+    const WebVector<unsigned char> m_iv;
+};
+
+class WebCryptoAesKeyGenParams : public WebCryptoAlgorithmParams {
+public:
+    WebCryptoAesKeyGenParams(unsigned short length)
+        : WebCryptoAlgorithmParams(WebCryptoAlgorithmParamsTypeAesKeyGenParams)
+        , m_length(length)
+    {
+    }
+
+    unsigned short length() const { return m_length; }
+
+private:
+    const unsigned short m_length;
+};
 
 } // namespace WebKit
 
-#endif // WebDeviceMotionData_h
+#endif