WebCrypto: Add algorithm normalization rules for RSASSA-PKCS1-v1_5.

Source/modules/crypto/NormalizeAlgorithm.cpp

 /*
  * 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 49 matching lines @@
 
 struct OperationParamsMapping {
     WebKit::WebCryptoAlgorithmId algorithmId;
     AlgorithmOperation operation;
     AlgorithmParamsForOperation params;
 };
 
 const AlgorithmNameMapping algorithmNameMappings[] = {
     {"AES-CBC", WebKit::WebCryptoAlgorithmIdAesCbc},
     {"HMAC", WebKit::WebCryptoAlgorithmIdHmac},
+    {"RSASSA-PKCS1-v1_5", WebKit::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5},
     {"SHA-1", WebKit::WebCryptoAlgorithmIdSha1},
     {"SHA-224", WebKit::WebCryptoAlgorithmIdSha224},
     {"SHA-256", WebKit::WebCryptoAlgorithmIdSha256},
     {"SHA-384", WebKit::WebCryptoAlgorithmIdSha384},
     {"SHA-512", WebKit::WebCryptoAlgorithmIdSha512},
 };
 
 // What operations each algorithm supports, and what parameters it expects.
 const OperationParamsMapping operationParamsMappings[] = {
     // AES-CBC (section 18.10.)
     {WebKit::WebCryptoAlgorithmIdAesCbc, Decrypt, WebKit::WebCryptoAlgorithmParamsTypeAesCbcParams},
     {WebKit::WebCryptoAlgorithmIdAesCbc, Encrypt, WebKit::WebCryptoAlgorithmParamsTypeAesCbcParams},
     {WebKit::WebCryptoAlgorithmIdAesCbc, GenerateKey, WebKit::WebCryptoAlgorithmParamsTypeAesKeyGenParams},
     {WebKit::WebCryptoAlgorithmIdAesCbc, ImportKey, WebKit::WebCryptoAlgorithmParamsTypeNone},
 
     // HMAC (section 18.14.)
     {WebKit::WebCryptoAlgorithmIdHmac, Sign, WebKit::WebCryptoAlgorithmParamsTypeHmacParams},
     {WebKit::WebCryptoAlgorithmIdHmac, Verify, WebKit::WebCryptoAlgorithmParamsTypeHmacParams},
     {WebKit::WebCryptoAlgorithmIdHmac, GenerateKey, WebKit::WebCryptoAlgorithmParamsTypeHmacParams},
     {WebKit::WebCryptoAlgorithmIdHmac, ImportKey, WebKit::WebCryptoAlgorithmParamsTypeHmacParams},
 
+    // RSASSA-PKCS1-v1_5 (section 18.4.)
+    {WebKit::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, Sign, WebKit::WebCryptoAlgorithmParamsTypeRsaSsaParams},
+    {WebKit::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, Verify, WebKit::WebCryptoAlgorithmParamsTypeRsaSsaParams},
+    {WebKit::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, GenerateKey, WebKit::WebCryptoAlgorithmParamsTypeRsaKeyGenParams},
+    {WebKit::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5, ImportKey, WebKit::WebCryptoAlgorithmParamsTypeNone},
+
     // SHA-1 (section 18.16.)
     {WebKit::WebCryptoAlgorithmIdSha1, Digest, WebKit::WebCryptoAlgorithmParamsTypeNone},
 
     // SHA-224 (section 18.16.)
     {WebKit::WebCryptoAlgorithmIdSha224, Digest, WebKit::WebCryptoAlgorithmParamsTypeNone},
 
     // SHA-256 (section 18.16.)
     {WebKit::WebCryptoAlgorithmIdSha256, Digest, WebKit::WebCryptoAlgorithmParamsTypeNone},
 
     // SHA-384 (section 18.16.)
@@ skipping 75 matching lines @@
 PassOwnPtr<WebKit::WebCryptoAlgorithmParams> parseAesKeyGenParams(const Dictionary& raw)
 {
     int32_t length;
     if (!raw.get("length", length))
         return nullptr;
     if (length < 0 || length > 0xFFFF)
         return nullptr;
     return adoptPtr(new WebKit::WebCryptoAesKeyGenParams(length));
 }
 
+bool parseHash(const Dictionary& raw, WebKit::WebCryptoAlgorithm& hash)
+{
+    Dictionary rawHash;
+    if (!raw.get("hash", rawHash))
+        return false;
+
+    NonThrowExceptionState es;
+    return normalizeAlgorithm(rawHash, Digest, hash, es);
+}
+
 PassOwnPtr<WebKit::WebCryptoAlgorithmParams> parseHmacParams(const Dictionary& raw)
 {
-    Dictionary rawHash;
-    if (!raw.get("hash", rawHash))
+    WebKit::WebCryptoAlgorithm hash;
+    if (!parseHash(raw, hash))
         return nullptr;
-
-    // Normalizing the algorithm for a Digest operation means it will only
-    // match the SHA-* algorithms.
-    WebKit::WebCryptoAlgorithm hash;
-    NonThrowExceptionState es;
-    if (!normalizeAlgorithm(rawHash, Digest, hash, es))
-        return nullptr;
-
     return adoptPtr(new WebKit::WebCryptoHmacParams(hash));
 }
 
+PassOwnPtr<WebKit::WebCryptoAlgorithmParams> parseRsaSsaParams(const Dictionary& raw)
+{
+    WebKit::WebCryptoAlgorithm hash;
+    if (!parseHash(raw, hash))
+        return nullptr;
+    return adoptPtr(new WebKit::WebCryptoRsaSsaParams(hash));
+}
+
+PassOwnPtr<WebKit::WebCryptoAlgorithmParams> parseRsaKeyGenParams(const Dictionary& raw)
+{
+    // FIXME: This is losing precision; modulusLength is supposed to be a uint32
+    int32_t modulusLength;
+    if (!raw.get("modulusLength", modulusLength))
+        return nullptr;
+    if (modulusLength < 0)
+        return nullptr;
+
+    RefPtr<Uint8Array> publicExponent;
+    if (!raw.get("publicExponent", publicExponent) || !publicExponent)
+        return nullptr;
+    return adoptPtr(new WebKit::WebCryptoRsaKeyGenParams(modulusLength, static_cast<const unsigned char*>(publicExponent->baseAddress()), publicExponent->byteLength()));
+}
+
 PassOwnPtr<WebKit::WebCryptoAlgorithmParams> parseAlgorithmParams(const Dictionary& raw, WebKit::WebCryptoAlgorithmParamsType type)
 {
     switch (type) {
     case WebKit::WebCryptoAlgorithmParamsTypeNone:
         return nullptr;
     case WebKit::WebCryptoAlgorithmParamsTypeAesCbcParams:
         return parseAesCbcParams(raw);
     case WebKit::WebCryptoAlgorithmParamsTypeAesKeyGenParams:
         return parseAesKeyGenParams(raw);
     case WebKit::WebCryptoAlgorithmParamsTypeHmacParams:
         return parseHmacParams(raw);
+    case WebKit::WebCryptoAlgorithmParamsTypeRsaSsaParams:
+        return parseRsaSsaParams(raw);
+    case WebKit::WebCryptoAlgorithmParamsTypeRsaKeyGenParams:
+        return parseRsaKeyGenParams(raw);
     }
     ASSERT_NOT_REACHED();
     return nullptr;
 }
 
 const AlgorithmInfo* algorithmInfo(const Dictionary& raw, ExceptionState& es)
 {
     String algorithmName;
     if (!raw.get("name", algorithmName)) {
         es.throwDOMException(NotSupportedError);
@@ skipping 36 matching lines @@
     if (!params && paramsType != WebKit::WebCryptoAlgorithmParamsTypeNone) {
         es.throwDOMException(NotSupportedError);
         return false;
     }
 
     algorithm = WebKit::WebCryptoAlgorithm(info->algorithmId, info->algorithmName, params.release());
     return true;
 }
 
 } // namespace WebCore