WebCrypto: Implement digest() using NSS

content/renderer/webcrypto_impl.cc

 // Copyright (c) 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_impl.h"
 
+// TODO(bryaneyler): Also include these in OpenSSL build.
+#if defined(USE_NSS)
+#include "content/renderer/webcrypto_sha_digest.h"
+#endif
+
+#include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 
 namespace content {
 
-WebKit::WebCryptoOperation* WebCryptoImpl::digest(
-    const WebKit::WebCryptoAlgorithm& algorithm) {
+void WebCryptoImpl::digest(
+    const WebKit::WebCryptoAlgorithm& algorithm,
+    WebKit::WebCryptoOperationResult& result) {
+// TODO(bryaneyler): Also include these in OpenSSL build.
+#if defined(USE_NSS)
   switch (algorithm.id()) {
     case WebKit::WebCryptoAlgorithmIdSha1:
     case WebKit::WebCryptoAlgorithmIdSha224:
     case WebKit::WebCryptoAlgorithmIdSha256:
     case WebKit::WebCryptoAlgorithmIdSha384:
-    case WebKit::WebCryptoAlgorithmIdSha512:
-      // TODO(eroman): Implement.
-      return NULL;
+    case WebKit::WebCryptoAlgorithmIdSha512: {
+      scoped_ptr<WebCryptoSHADigest> operation(
+          new WebCryptoSHADigest(algorithm.id(), result));

[Ryan Sleevi, 2013/07/31 18:19:19]

If you're using the HASH model from NSS (or the EVP model from OpenSSL), you'll
actually likely end up with only a single class for all the digesting
operations.

Just FWIW.

[Bryan Eyler, 2013/08/02 00:49:05]

Should this just be WebCryptoDigest then?

[eroman, 2013/08/02 01:42:58]

Yes please

[Bryan Eyler, 2013/08/02 21:08:08]

Done.

+
+      if(!operation->Initialize()) {

[Ryan Sleevi, 2013/07/31 18:19:19]

style: if (!operation->Initialize()) {

[Bryan Eyler, 2013/08/02 00:49:05]

Done.

+        result.initializationFailed();
+      } else {
+        result.initializationSucceeded(operation.release());
+      }
+      return;
+    }
     default:
       // Not a digest algorithm.
-      return NULL;
+      result.initializationFailed();
+      return;
   }
+#else
+  // No way to process.
+  result.initializationFailed();
+#endif
 }
 
 }  // namespace content