Deleted redundant SymmetricKey::GetRawKey().

crypto/hmac.cc

 // Copyright (c) 2012 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 "crypto/hmac.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 32 matching lines @@
 
 bool HMAC::Init(const unsigned char* key, size_t key_length) {
   // Init must not be called more than once on the same HMAC object.
   DCHECK(!initialized_);
   initialized_ = true;
   key_.assign(key, key + key_length);
   return true;
 }
 
 bool HMAC::Init(const SymmetricKey* key) {
-  std::string raw_key;
-  bool result = key->GetRawKey(&raw_key) && Init(raw_key);
-  // Zero out key copy.  This might get optimized away, but one can hope.
-  // Using std::string to store key info at all is a larger problem.
-  std::fill(raw_key.begin(), raw_key.end(), 0);
-  return result;
+  return Init(key->key());
 }
 
 bool HMAC::Sign(const base::StringPiece& data,
                 unsigned char* digest,
                 size_t digest_length) const {
   DCHECK(initialized_);
 
   ScopedOpenSSLSafeSizeBuffer<EVP_MAX_MD_SIZE> result(digest, digest_length);
   return !!::HMAC(hash_alg_ == SHA1 ? EVP_sha1() : EVP_sha256(), key_.data(),
                   key_.size(),
@@ skipping 16 matching lines @@
   std::unique_ptr<unsigned char[]> computed_digest(
       new unsigned char[digest_length]);
   if (!Sign(data, computed_digest.get(), digest_length))
     return false;
 
   return SecureMemEqual(digest.data(), computed_digest.get(),
                         std::min(digest.size(), digest_length));
 }
 
 }  // namespace crypto