Add new Chrome OS key type: Salted SHA256

chromeos/login/auth/key.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 "chromeos/login/auth/key.h"
 
 #include "base/base64.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 82 matching lines @@
           crypto::SymmetricKey::DeriveKeyFromPassword(crypto::SymmetricKey::AES,
                                                       secret_,
                                                       salt,
                                                       kNumIterations,
                                                       kKeySizeInBits));
       std::string raw_secret;
       key->GetRawKey(&raw_secret);
       base::Base64Encode(raw_secret, &secret_);
       break;
     }
+    case KEY_TYPE_SALTED_SHA256:
+      base::Base64Encode(crypto::SHA256HashString(salt + secret_), &secret_);
+      break;
+
     default:
       // The resulting key will be sent to cryptohomed. It should always be
       // hashed. If hashing fails, crash instead of sending a plain-text key.
       CHECK(false);
       return;
   }
 
   key_type_ = target_key_type;
   salt_ = salt;
 }
 
 }  // namespace chromeos