Terminal communication system

Details Terminal communication system Terminal communication system

H - Electricity

04

L

H04L 9/32 (2006.01) H04L 9/28 (2006.01) H04Q 7/32 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2391246

Portable terminal MS downloads coupon data and public key KEYP2 of IP server 20 from IP server 20. Service terminal T obtains from IP server 20, a server certificate to which a digital signature is applied by secret key KEYS2. One to one local communication by infrared radiation is performed between portable terminal MS and service terminal T. At this point, portable terminal MS decrypts a server certificate by utilizing public key KEYP2 of IP server 20. Then, portable terminal MS communicates specified data after authenticating the identity of service terminal T.

Selon la présente invention, un terminal mobile (MS) télécharge à partir d'un serveur IP (20) une clé publique (KEYP2) de ce serveur IP (20) ainsi que des données relatives à des bons. Un terminal de service (T) recherche un certificat de serveur portant la signature numérique de la clé privée (KEYS2) correspondante. Une communication locale biunivoque s'établit entre le terminal mobile (MS) et le terminal de service (T) par radiation infrarouge. Le terminal mobile (MS) décrypte alors le certificat du serveur à l'aide de la clé publique (KEYP2) du serveur IP (20). Le terminal mobile (MS) assure la communication de données particulières après avoir vérifié si le terminal de services (T) a fait l'objet d'une autorisation.

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