Method and system for registering and verifying smart card certificate for users moving between public key infrastructure domains

摘要

Disclosed herein is a method and system for registering and verifying a smart card certificate for users moving between public key infrastructure domains, which allows a user moving between domains to have a smart card certified in a terminal located in an external domain other than a home domain. According to the present invention, when a user wants his/her own smart card to be certified in a terminal of an external domain, a certification authority of the external domain can certify the smart card using a certificate stored in the smart card and signed electronically by a certification authority of a home domain. Additionally, a new certificate issued by the certification authority of the external domain is stored in the certified smart card, so that a certificate of the moving user can be verified regardless of domains and a new certificate of a moved domain can be easily obtained.