WebCrypto: Implement importKey() and sign() for HMAC in 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"
 
+#include "base/memory/scoped_ptr.h"
 #include "third_party/WebKit/public/platform/WebArrayBuffer.h"
+#include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
+#include "third_party/WebKit/public/platform/WebCryptoKey.h"
 
 namespace content {
 
 WebCryptoImpl::WebCryptoImpl() {
   Init();
 }
 
 void WebCryptoImpl::digest(
     const WebKit::WebCryptoAlgorithm& algorithm,
     const unsigned char* data,
     unsigned data_size,
     WebKit::WebCryptoResult result) {
   WebKit::WebArrayBuffer buffer;
   if (!DigestInternal(algorithm, data, data_size, &buffer)) {
     result.completeWithError();
   } else {
     result.completeWithBuffer(buffer);
   }
 }
 
+void WebCryptoImpl::importKey(
+    WebKit::WebCryptoKeyFormat format,
+    const unsigned char* key_data,
+    unsigned key_data_size,
+    const WebKit::WebCryptoAlgorithm& algorithm,
+    bool extractable,
+    WebKit::WebCryptoKeyUsageMask usage_mask,
+    WebKit::WebCryptoResult result) {
+  WebKit::WebCryptoKeyType type;
+  scoped_ptr<WebKit::WebCryptoKeyHandle> handle;
+
+  if (!ImportKeyInternal(format,
+                         key_data,
+                         key_data_size,
+                         algorithm,
+                         usage_mask,
+                         &handle,
+                         &type)) {
+    result.completeWithError();
+    return;
+  }
+
+  WebKit::WebCryptoKey key(
+      WebKit::WebCryptoKey::create(
+          handle.release(), type, extractable, algorithm, usage_mask));
+
+  result.completeWithKey(key);
+}
+
+void WebCryptoImpl::sign(
+    const WebKit::WebCryptoAlgorithm& algorithm,
+    const WebKit::WebCryptoKey& key,
+    const unsigned char* data,
+    unsigned data_size,
+    WebKit::WebCryptoResult result) {
+  WebKit::WebArrayBuffer buffer;
+  if (!SignInternal(algorithm, key, data, data_size, &buffer)) {
+    result.completeWithError();
+  } else {
+    result.completeWithBuffer(buffer);
+  }
+}
+
 }  // namespace content