[webcrypto] Add RSASSA-PKCS1-v1_5 sign and verify for NSS.

content/renderer/webcrypto/webcrypto_util.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/webcrypto/webcrypto_util.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
@@ skipping 55 matching lines @@
 bool Base64DecodeUrlSafe(const std::string& input, std::string* output) {
   std::string base64EncodedText(input);
   std::replace(base64EncodedText.begin(), base64EncodedText.end(), '-', '+');
   std::replace(base64EncodedText.begin(), base64EncodedText.end(), '_', '/');
   base64EncodedText.append((4 - base64EncodedText.size() % 4) % 4, '=');
   return base::Base64Decode(base64EncodedText, output);
 }
 
 blink::WebCryptoAlgorithm GetInnerHashAlgorithm(
     const blink::WebCryptoAlgorithm& algorithm) {
-  if (algorithm.hmacParams())
-    return algorithm.hmacParams()->hash();
-  if (algorithm.hmacKeyParams())
-    return algorithm.hmacKeyParams()->hash();
-  if (algorithm.rsaSsaParams())
-    return algorithm.rsaSsaParams()->hash();
-  if (algorithm.rsaOaepParams())
-    return algorithm.rsaOaepParams()->hash();
+  DCHECK(!algorithm.isNull());
+  switch (algorithm.id()) {
+    case blink::WebCryptoAlgorithmIdHmac:
+      if (algorithm.hmacParams())
+        return algorithm.hmacParams()->hash();
+      else if (algorithm.hmacKeyParams())
+        return algorithm.hmacKeyParams()->hash();
+      break;
+    case blink::WebCryptoAlgorithmIdRsaOaep:
+      if (algorithm.rsaOaepParams())
+        return algorithm.rsaOaepParams()->hash();
+      break;
+    case blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
+      if (algorithm.rsaSsaParams())
+        return algorithm.rsaSsaParams()->hash();
+      break;
+    default:
+      break;
+  }
   return blink::WebCryptoAlgorithm::createNull();
 }
 
 blink::WebCryptoAlgorithm CreateAlgorithm(blink::WebCryptoAlgorithmId id) {
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(id, NULL);
 }
 
 blink::WebCryptoAlgorithm CreateHmacAlgorithmByHashOutputLen(
     unsigned short hash_output_length_bits) {
   blink::WebCryptoAlgorithmId hash_id;
@@ skipping 102 matching lines @@
 
 blink::WebCryptoAlgorithm CreateAesGcmKeyGenAlgorithm(
     unsigned short key_length_bits) {
   return CreateAesKeyGenAlgorithm(blink::WebCryptoAlgorithmIdAesGcm,
                                   key_length_bits);
 }
 
 }  // namespace webcrypto
 
 }  // namespace content