Revert 174726 "[webcrypto] Remove RSA-ES support (3 of 3)"

trunk/Source/platform/exported/WebCryptoKeyAlgorithm.cpp

Index: trunk/Source/platform/exported/WebCryptoKeyAlgorithm.cpp
===================================================================
--- trunk/Source/platform/exported/WebCryptoKeyAlgorithm.cpp	(revision 174732)
+++ trunk/Source/platform/exported/WebCryptoKeyAlgorithm.cpp	(working copy)
@@ -80,6 +80,12 @@
     return WebCryptoKeyAlgorithm(WebCryptoAlgorithmIdHmac, adoptPtr(new WebCryptoHmacKeyAlgorithmParams(createHash(hash), keyLengthBits)));
 }
 
+WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::createRsa(WebCryptoAlgorithmId id, unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize)
+{
+    // FIXME: Verify that id is an RSA algorithm without a hash
+    return WebCryptoKeyAlgorithm(id, adoptPtr(new WebCryptoRsaKeyAlgorithmParams(modulusLengthBits, publicExponent, publicExponentSize)));
+}
+
 WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::createRsaHashed(WebCryptoAlgorithmId id, unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize, WebCryptoAlgorithmId hash)
 {
     // FIXME: Verify that id is an RSA algorithm which expects a hash
@@ -123,6 +129,14 @@
     return 0;
 }
 
+WebCryptoRsaKeyAlgorithmParams* WebCryptoKeyAlgorithm::rsaParams() const
+{
+    ASSERT(!isNull());
+    if (paramsType() == WebCryptoKeyAlgorithmParamsTypeRsa || paramsType() == WebCryptoKeyAlgorithmParamsTypeRsaHashed)
+        return static_cast<WebCryptoRsaKeyAlgorithmParams*>(m_private->params.get());
+    return 0;
+}
+
 WebCryptoRsaHashedKeyAlgorithmParams* WebCryptoKeyAlgorithm::rsaHashedParams() const
 {
     ASSERT(!isNull());