Service system and method for certificate of electronic bankbook

A method for providing electronic bankbook authentication service is provided to prevent an unauthorized copy of personal information, data forgery and information hacking by applying a new authentication algorithm. A communication interface module(110) transmits information of a bankbook and a terminal device for an electronic bankbook authentication through an LAN(Local Area Network). A user authentication code storing module(120) stores the user authentication code to recognize the user. A user authentication code comparison module(130) confirms the user authentication code whether it is same to the user authentication code stored in the user authentication code storing module. A key storing module(140) stores a card security key as a modulated card security key type. A trace code storing module(150) stores a trace code required to convert the modulated card security key into the card security key. A card verification code producing module(160) produces a card random code and a session key to produce the card verification code. An electronic bankbook transmission module(170) transmits a card random code and the card verification code.