Patent ID: 8762710
Filing Date: 2014-06-24
Classification: H04L,H04W

Abstract:
1. A method for updating and using a digital certificate in establishing an ad hoc network communication between two terminals, the method comprising: a first terminal having a wireless local area network (WLAN) Authentication and Privacy Infrastructure (WAPI) function sending a beacon probe frame to a second terminal having said WAPI function; after receiving said beacon probe frame from said first terminal, said second terminal sending a beacon probe response frame including digital certificate format information of said second terminal to said first terminal; after receiving said beacon probe response frame, said first terminal checking whether a digital certificate format of said second terminal is different from a digital certificate format of said first terminal; after said first terminal checking confirms that said digital certificate format of said second terminal is different from said digital certificate format of said first terminal, said first terminal establishing a secure link with an access point; and said first terminal using said secure link to send a certificate updating request to said access point, where said certificate updating request includes a digital certificate to be updated which is currently used by said first terminal and said digital certificate format information of said second terminal; said access point sending said digital certificate to be updated to a local Authentication Service Unit which issues the certificate to be updated; the local Authentication Service Unit which issues said digital certificate to be updated verifying said digital certificate to be updated, and after said digital certificate is verified to be valid, a local Authentication Service Unit corresponding to said access point generating a new digital certificate of said first terminal, and sending said new digital certificate to said first terminal through said access point so that a digital certificate format of said new digital certificate of said first terminal matches said digital certificate format of said second terminal; and after receiving said new digital certificate, said first terminal performing WAPI ad hoc network communication with said second terminal by using said new digital certificate.