A system according to the present invention stores entry information on a certificate issued by a certification authority in a path information list in which path information on certificates is stored. When a path search request is received, the system searches for a certification authority chain based...http://www.google.fr/patents/US20040128503?utm_source=gb-gplus-shareBrevet US20040128503 - Certificate path information management system and certificate management device
Certificate path information management system and certificate management device