[webcrypto] Minor cleanup/consolidation of JWK source.

content/child/webcrypto/shared_crypto.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/shared_crypto.h"
 
 #include "base/logging.h"
 #include "content/child/webcrypto/crypto_data.h"
+#include "content/child/webcrypto/jwk.h"
 #include "content/child/webcrypto/platform_crypto.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/webcrypto_util.h"
 #include "crypto/secure_util.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
 #include "third_party/WebKit/public/platform/WebCryptoKey.h"
 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
 
 namespace content {
@@ skipping 457 matching lines @@
     const blink::WebCryptoAlgorithm& wrapping_algorithm,
     blink::WebArrayBuffer* buffer) {
   blink::WebArrayBuffer exported_data;
   Status status = ExportKey(format, key_to_wrap, &exported_data);
   if (status.IsError())
     return status;
   return EncryptDontCheckUsage(
       wrapping_algorithm, wrapping_key, CryptoData(exported_data), buffer);
 }
 
+// Returns the internal block size for SHA-*
+unsigned int ShaBlockSizeBytes(blink::WebCryptoAlgorithmId hash_id) {
+  switch (hash_id) {
+    case blink::WebCryptoAlgorithmIdSha1:
+    case blink::WebCryptoAlgorithmIdSha256:
+      return 64;
+    case blink::WebCryptoAlgorithmIdSha384:
+    case blink::WebCryptoAlgorithmIdSha512:
+      return 128;
+    default:
+      NOTREACHED();
+      return 0;
+  }
+}
+
 }  // namespace
 
 void Init() { platform::Init(); }
 
 Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
                const blink::WebCryptoKey& key,
                const CryptoData& data,
                blink::WebArrayBuffer* buffer) {
   if (!KeyUsageAllows(key, blink::WebCryptoKeyUsageEncrypt))
     return Status::ErrorUnexpected();
@@ skipping 311 matching lines @@
                             key);
   if (status.IsError())
     return status;
 
   return ValidateDeserializedKey(*key, algorithm, type);
 }
 
 }  // namespace webcrypto
 
 }  // namespace content