摘要：Traditional password protocol was based on user-chosen key. However, these method has password-guessing attack to attacker. Methods that is proposed in existing tried to protect password to use using method and method that use changing without changing password. However, about password itself, have various limitation. Propose using password by new method that quote user in unsafe network from these problem and shares session telegram key between each other. Proposed protocol proposes safely in preliminary attack by active attacker, password-guessing attack, forward secrecy, server compromise, client compromise and session key loss
