SYMMETRIC KEY-BASED AUTHENTICATION IN MULTIPLE DOMAINS

摘要

An authentication method capable of securing reliability and scalability by authenticating an authentication entity using a certificate signed by a symmetric key, when a user or device accesses a domain in which an authentication process is required are provided. The method includes: (a) allowing a home domain authentication server to generate a certificate and a symmetric key and to distribute the certificate and the symmetric key to an authentication entity; (b) allowing the authentication entity to submit the certificate to the home domain authentication server or an external domain authentication server; and (c) allowing the home domain authentication server or external domain authentication server to verify the validity of the submitted certificate by using the symmetric key. Accordingly, an effective authentication method can be provided in a public key-based authentication method in consideration of data processing capability or computing power.