[webcrypto] Restrict public exponent for RSA key generation to 3 or 65537.

content/child/webcrypto/status.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/status.h"
 
 namespace content {
 
 namespace webcrypto {
 
@@ skipping 152 matching lines @@
 }
 
 Status Status::ErrorInvalidAesKwDataLength() {
   return Status(blink::WebCryptoErrorTypeData,
                 "The AES-KW input data length is invalid: not a multiple of 8 "
                 "bytes");
 }
 
 Status Status::ErrorGenerateKeyPublicExponent() {
   return Status(blink::WebCryptoErrorTypeData,
-                "The \"publicExponent\" is either empty, zero, or too large");
+                "The \"publicExponent\" must be either 3 or 65537");
 }
 
 Status Status::ErrorImportRsaEmptyModulus() {
   return Status(blink::WebCryptoErrorTypeData, "The modulus is empty");
 }
 
 Status Status::ErrorGenerateRsaZeroModulus() {
   return Status(blink::WebCryptoErrorTypeData,
                 "The modulus bit length cannot be zero");
 }
@@ skipping 25 matching lines @@
       error_type_(error_type),
       error_details_(error_details_utf8) {
 }
 
 Status::Status(Type type) : type_(type) {
 }
 
 }  // namespace webcrypto
 
 }  // namespace content