WebCrypto: Add ECDSA algorithm (Blink side).

public/platform/WebCryptoKeyAlgorithmParams.h

 /*
  * Copyright (C) 2014 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 35 matching lines @@
     virtual void setString(const char*, const char*) = 0;
     virtual void setUint(const char*, unsigned) = 0;
     virtual void setAlgorithm(const char*, const WebCryptoAlgorithm&) = 0;
     virtual void setUint8Array(const char*, const WebVector<unsigned char>&) = 0;
 };
 
 enum WebCryptoKeyAlgorithmParamsType {
     WebCryptoKeyAlgorithmParamsTypeNone,
     WebCryptoKeyAlgorithmParamsTypeHmac,
     WebCryptoKeyAlgorithmParamsTypeAes,
-    WebCryptoKeyAlgorithmParamsTypeRsaHashed
+    WebCryptoKeyAlgorithmParamsTypeRsaHashed,
+    WebCryptoKeyAlgorithmParamsTypeEc,
 };
 
 class WebCryptoKeyAlgorithmParams {
 public:
     virtual ~WebCryptoKeyAlgorithmParams() { }
     virtual WebCryptoKeyAlgorithmParamsType type() const
     {
         return WebCryptoKeyAlgorithmParamsTypeNone;
     }
 
@@ skipping 95 matching lines @@
         dict->setUint("modulusLength", m_modulusLengthBits);
         dict->setUint8Array("publicExponent", m_publicExponent);
     }
 
 private:
     unsigned m_modulusLengthBits;
     WebVector<unsigned char> m_publicExponent;
     WebCryptoAlgorithm m_hash;
 };
 
+class WebCryptoEcKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
+public:
+    explicit WebCryptoEcKeyAlgorithmParams(WebCryptoNamedCurve namedCurve)
+        : m_namedCurve(namedCurve)
+    {
+    }
+
+    WebCryptoNamedCurve namedCurve() const
+    {
+        return m_namedCurve;
+    }
+
+    virtual WebCryptoKeyAlgorithmParamsType type() const
+    {
+        return WebCryptoKeyAlgorithmParamsTypeEc;
+    }
+
+    virtual void writeToDictionary(WebCryptoKeyAlgorithmDictionary* dict) const
+    {
+        switch (m_namedCurve) {
+        case WebCryptoNamedCurveP256:
+            dict->setString("namedCurve", "P-256");
+            break;
+        case WebCryptoNamedCurveP384:
+            dict->setString("namedCurve", "P-384");
+            break;
+        case WebCryptoNamedCurveP521:
+            dict->setString("namedCurve", "P-521");
+            break;
+        }
+    }
+
+private:
+    const WebCryptoNamedCurve m_namedCurve;
+};
+
 } // namespace blink
 
 #endif