[webcrypto] Add raw symmetric key AES-KW wrap/unwrap for NSS.

content/renderer/webcrypto/webcrypto_util.cc

 // Copyright 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/webcrypto_util.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
@@ skipping 94 matching lines @@
 }
 
 Status Status::ErrorIncorrectSizeAesCbcIv() {
   return Status("The \"iv\" has an unexpected length -- must be 16 bytes");
 }
 
 Status Status::ErrorDataTooLarge() {
   return Status("The provided data is too large");
 }
 
+Status Status::ErrorDataTooSmall() {
+  return Status("The provided data is too small");
+}
+
 Status Status::ErrorUnsupported() {
   return Status("The requested operation is unsupported");
 }
 
 Status Status::ErrorUnexpected() {
   return Status("Something unexpected happened...");
 }
 
 Status Status::ErrorInvalidAesGcmTagLength() {
   return Status(
       "The tag length is invalid: Must be 32, 64, 96, 104, 112, 120, or 128 "
       "bits");
 }
 
+Status Status::ErrorInvalidAesKwDataLength() {
+  return Status(
+      "The AES-KW input data length is invalid: not a multiple of 8 "
+      "bytes");
+}
+
 Status Status::ErrorGenerateKeyPublicExponent() {
   return Status("The \"publicExponent\" is either empty, zero, or too large");
 }
 
 Status Status::ErrorMissingAlgorithmImportRawKey() {
   return Status(
       "The key's algorithm must be specified when importing "
       "raw-formatted key.");
 }
 
+Status Status::ErrorMissingAlgorithmUnwrapRawKey() {
+  return Status(
+      "The key's algorithm must be specified when unwrapping a "
+      "raw-formatted key.");
+}
+
 Status Status::ErrorImportRsaEmptyModulus() {
   return Status("The modulus is empty");
 }
 
 Status Status::ErrorGenerateRsaZeroModulus() {
   return Status("The modulus bit length cannot be zero");
 }
 
 Status Status::ErrorImportRsaEmptyExponent() {
   return Status("No bytes for the exponent were provided");
@@ skipping 146 matching lines @@
           new blink::WebCryptoAesKeyAlgorithmParams(keylen_bytes * 8));
       return true;
     default:
       return false;
   }
 }
 
 }  // namespace webcrypto
 
 }  // namespace content