Electronics and Telecommunications Research Institute

Yeong-Sub Cho

Jong-Hyouk Noh

Sang-Rae Cho

Seung-Hun Jin

Dae-Seon Choi

Seung-Hyun Kim

Kyo Il Chung

Tae-Sung Kim

Provided are a system and method for updating a user identifier (ID). The user ID updating method includes: (a) collecting unauthorized access attempt information for a user ID; (b) creating a user ID update policy for an encoded user ID obtained by encoding the user ID, according to the unauthorized access attempt information collected in operation (a); (c) storing the user ID update policy created in operation (b); (d) loading the user ID update policy stored in operation (c) and determining whether or not to update the user ID; and (e) creating a new user ID if it is determined in operation (d) that the user ID should be updated, and changing the user ID to the new user ID. Therefore, it is possible to ensure security for user IDs, by dynamically creating and updating user IDs according to security environments.

System and method for updating user identifiers (IDs)

Provided is a certificate transmission server transmitting a certificate stored in a fixed terminal to a mobile terminal, a system including the same, and a method using the same. The method includes forming a security channel to the mobile terminal and performing authentication of the mobile terminal, forming a security channel to the fixed terminal and performing authentication of the fixed terminal, and if the authentication of the mobile terminal and the fixed terminal is successful, receiving the certificate from the fixed terminal and transmitting the certificate to the mobile terminal. Accordingly, authentication of a mobile terminal and a fixed terminal can be performed by a certificate transmission server, and the certificate can be transmitted by establishing a safe communication channel.

Server and system for transmitting certificate stored in fixed terminal to mobile terminal and method using the same

Growing community of inventors

Daejeon, South Korea

Yeong-Sub Cho