ENUM SYSTEM AND USER AUTHENTICATION METHOD

摘要

A telephone number mapping system and a user authentication method applied to the same are provided to improve convenience of a user by using services provided from all service provider connected to a DNS server without an additional authentication process by a single authentication process of a user terminal which is performed through the DNS server of the telephone number mapping system. A user authentication method applied to a telephone number mapping system includes the steps of: if an address request of a service provider is inputted from a user terminal, determining whether an authentication for a corresponding user is needed(1); if the user authentication is needed based on the determination result, requesting a user authentication through the user terminal(2); determining whether a user authentication information inputted in response to the request is available, and if the authentication is available, generating and storing the authentication information of the corresponding user; and if an address for the service provider is requested from the user terminal having the authentication information, providing a corresponding information, and transmitting an acknowledgement information for an user authentication acknowledgement which is requested from the corresponding service provider(3).