Add new Chrome OS key type: Salted SHA256

chromeos/login/auth/key.h

 // 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.
 
 #ifndef CHROMEOS_LOGIN_AUTH_KEY_H_
 #define CHROMEOS_LOGIN_AUTH_KEY_H_
 
 #include <string>
 
 #include "chromeos/chromeos_export.h"
 
 namespace chromeos {
 
 // Key for user authentication. The class supports hashing of plain text
 // passwords to generate keys as well as the use of pre-hashed keys.
 class CHROMEOS_EXPORT Key {
  public:
   enum KeyType {
     // Plain text password.
-    KEY_TYPE_PASSWORD_PLAIN,
+    KEY_TYPE_PASSWORD_PLAIN = 0,
     // SHA256 of salt + password, first half only, lower-case hex encoded.
-    KEY_TYPE_SALTED_SHA256_TOP_HALF,
+    KEY_TYPE_SALTED_SHA256_TOP_HALF = 1,
     // PBKDF2 with 256 bit AES and 1234 iterations, base64 encoded.
-    KEY_TYPE_SALTED_PBKDF2_AES256_1234,
+    KEY_TYPE_SALTED_PBKDF2_AES256_1234 = 2,
+    // SHA256 of salt + password, base64 encoded.
+    KEY_TYPE_SALTED_SHA256 = 3,
+
+    // Sentinel. Must be last.
+    KEY_TYPE_COUNT
   };
 
   Key();
   Key(const Key& other);
   explicit Key(const std::string& plain_text_password);
   Key(KeyType key_type, const std::string& salt, const std::string& secret);
   ~Key();
 
   bool operator==(const Key& other) const;
 
@@ skipping 10 matching lines @@
  private:
   KeyType key_type_;
   std::string salt_;
   std::string secret_;
   std::string label_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_LOGIN_AUTH_KEY_H_