[webcrypto] Implement PBKDF2 (blink-side)

Source/modules/crypto/NormalizeAlgorithm.cpp

Index: Source/modules/crypto/NormalizeAlgorithm.cpp
diff --git a/Source/modules/crypto/NormalizeAlgorithm.cpp b/Source/modules/crypto/NormalizeAlgorithm.cpp
index 823989554d1830bcbaa42b07280068057277d59b..f518be887e6ddf4ef0bdc23b1e5b5ac30424e827 100644
--- a/Source/modules/crypto/NormalizeAlgorithm.cpp
+++ b/Source/modules/crypto/NormalizeAlgorithm.cpp
@@ -70,6 +70,7 @@ const AlgorithmNameMapping algorithmNameMappings[] = {
     {"ECDH", 4, WebCryptoAlgorithmIdEcdh},
     {"SHA-1", 5, WebCryptoAlgorithmIdSha1},
     {"ECDSA", 5, WebCryptoAlgorithmIdEcdsa},
+    {"PBKDF2", 6, WebCryptoAlgorithmIdPbkdf2},
     {"AES-KW", 6, WebCryptoAlgorithmIdAesKw},
     {"SHA-512", 7, WebCryptoAlgorithmIdSha512},
     {"SHA-384", 7, WebCryptoAlgorithmIdSha384},
@@ -757,6 +758,29 @@ bool parseEcdhKeyDeriveParams(const Dictionary& raw, OwnPtr<WebCryptoAlgorithmPa
     params = adoptPtr(new WebCryptoEcdhKeyDeriveParams(cryptoKey->key()));
     return true;
 }
+//     dictionary Pbkdf2Params : Algorithm {
+//       required BufferSource salt;
+//       [EnforceRange] required unsigned long iterations;
+//       required HashAlgorithmIdentifier hash;
+//     };
+bool parsePbkdf2Params(const Dictionary& raw, OwnPtr<WebCryptoAlgorithmParams>& params, const ErrorContext& context, AlgorithmError* error)
+{
+    BufferSource saltBufferSource;
+    if (!getBufferSource(raw, "salt", saltBufferSource, context, error))
+        return false;
+
+    DOMArrayPiece salt(saltBufferSource);
+
+    uint32_t iterations;
+    if (!getUint32(raw, "iterations", iterations, context, error))
+        return false;
+
+    WebCryptoAlgorithm hash;
+    if (!parseHash(raw, hash, context, error))
+        return false;
+    params = adoptPtr(new WebCryptoPbkdf2Params(hash, salt.bytes(), salt.byteLength(), iterations));
+    return true;
+}
 
 // Defined by the WebCrypto spec as:
 //
@@ -823,6 +847,9 @@ bool parseAlgorithmParams(const Dictionary& raw, WebCryptoAlgorithmParamsType ty
     case WebCryptoAlgorithmParamsTypeAesDerivedKeyParams:
         context.add("AesDerivedKeyParams");
         return parseAesDerivedKeyParams(raw, params, context, error);
+    case WebCryptoAlgorithmParamsTypePbkdf2Params:
+        context.add("Pbkdf2Params");
+        return parsePbkdf2Params(raw, params, context, error);
     }
     ASSERT_NOT_REACHED();
     return false;