webcrypto: Add ECDSA algorithm (chromium-side)

content/child/webcrypto/webcrypto_util.cc

 // Copyright 2014 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/child/webcrypto/webcrypto_util.h"
 
 #include <set>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
@@ skipping 119 matching lines @@
 }
 
 blink::WebCryptoAlgorithm CreateRsaHashedImportAlgorithm(
     blink::WebCryptoAlgorithmId id,
     blink::WebCryptoAlgorithmId hash_id) {
   DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       id, new blink::WebCryptoRsaHashedImportParams(CreateAlgorithm(hash_id)));
 }
 
+blink::WebCryptoAlgorithm CreateEcImportAlgorithm(
+    blink::WebCryptoAlgorithmId id,
+    blink::WebCryptoNamedCurve named_curve) {
+  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
+      id, new blink::WebCryptoEcKeyImportParams(named_curve));
+}
+
 bool ContainsKeyUsages(blink::WebCryptoKeyUsageMask a,
                        blink::WebCryptoKeyUsageMask b) {
   return (a & b) == b;
 }
 
 // TODO(eroman): Move this helper to WebCryptoKey.
 bool KeyUsageAllows(const blink::WebCryptoKey& key,
                     const blink::WebCryptoKeyUsage usage) {
   return ((key.usages() & usage) != 0);
 }
@@ skipping 100 matching lines @@
   // avoid feeding OpenSSL data that will hang use a whitelist.
   if (*public_exponent != 3 && *public_exponent != 65537)
     return Status::ErrorGenerateKeyPublicExponent();
 
   return Status::Success();
 }
 
 }  // namespace webcrypto
 
 }  // namespace content