Reject JWK key import when key_ops contains duplicate values.

content/child/webcrypto/webcrypto_util.h

 // 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.
 
 #ifndef CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_
 #define CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_
 
 #include <stdint.h>
 #include <string>
 
 #include "base/values.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
 
 namespace content {
 
 namespace webcrypto {
 
 class Status;
 
-// Composes a Web Crypto usage mask from an array of JWK key_ops values.
-CONTENT_EXPORT Status GetWebCryptoUsagesFromJwkKeyOps(
-    const base::ListValue* jwk_key_ops_value,
-    blink::WebCryptoKeyUsageMask* jwk_key_ops_mask);
+// Converts a JWK "key_ops" array to the corresponding WebCrypto usages.
+CONTENT_EXPORT Status
+    GetWebCryptoUsagesFromJwkKeyOps(const base::ListValue* key_ops,
+                                    blink::WebCryptoKeyUsageMask* usages);
 
 // Composes a JWK key_ops array from a Web Crypto usage mask.
 base::ListValue* CreateJwkKeyOpsFromWebCryptoUsages(
     blink::WebCryptoKeyUsageMask usages);
 
 // Creates a WebCryptoAlgorithm without any parameters.
 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateAlgorithm(
     blink::WebCryptoAlgorithmId id);
 
 // Creates an HMAC import algorithm whose inner hash algorithm is determined by
@@ skipping 38 matching lines @@
 Status GetRsaKeyGenParameters(
     const blink::WebCryptoRsaHashedKeyGenParams* params,
     unsigned int* public_exponent,
     unsigned int* modulus_length_bits);
 
 }  // namespace webcrypto
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_