1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_KEY_H_ 6 #define CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_KEY_H_ 7 8 #include <string> 9 10 namespace chromeos { 11 12 // Key for user authentication. The class supports hashing of plain text 13 // passwords to generate keys as well as the use of pre-hashed keys. 14 class Key { 15 public: 16 enum KeyType { 17 // Plain text password. 18 KEY_TYPE_PASSWORD_PLAIN, 19 // SHA256 of salt + password, first half only, lower-case hex encoded. 20 KEY_TYPE_SALTED_SHA256_TOP_HALF, 21 // PBKDF2 with 256 bit AES and 1234 iterations, base64 encoded. 22 KEY_TYPE_SALTED_PBKDF2_AES256_1234, 23 }; 24 25 Key(); 26 Key(const Key& other); 27 explicit Key(const std::string& plain_text_password); 28 Key(KeyType key_type, const std::string& salt, const std::string& secret); 29 ~Key(); 30 31 bool operator==(const Key& other) const; 32 33 KeyType GetKeyType() const; 34 const std::string& GetSecret() const; 35 const std::string& GetLabel() const; 36 37 void SetLabel(const std::string& label); 38 39 void ClearSecret(); 40 41 void Transform(KeyType target_key_type, const std::string& salt); 42 43 private: 44 KeyType key_type_; 45 std::string salt_; 46 std::string secret_; 47 std::string label_; 48 }; 49 50 } // namespace chromeos 51 52 #endif // CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_KEY_H_ 53
