Radio telephone installation with secure prepayment service
Abstract
Abstract Translated from French Au cours de l'intercommunication entre la station de base et le poste autonome, les premiers moyens d'authentification (MA1) génèrent tout d'abord un mot clé (MCL) dépendant de la taxe d'utilisation (CONS) du service en cours et le transmettent vers le poste autonome. Les seconds moyens d'authentification (MA2) calculent ensuite le transformé (SRES) dudit mot clé (MCL) par la fonction cryptographique F à l'aide de la clé (KEY) secrète de l'abonné, et transmettent ledit transformé (SRES) vers les premiers moyens d'authentification (MA2) qui contrôlent enfin l'authenticité dudit transformé (SRES) pour inhiber totalement l'intercommunication en cas d'authentificité non confirmée par ledit contrôle. During the intercommunication between the base station and the autonomous station, the first authentication means (MA1) first generate a keyword (MCL) depending on the usage fee (CONS) of the current service and transmit it to the autonomous station. The second authentication means (MA2) then calculate the transform (SRES) of said keyword (MCL) by the cryptographic function F using the secret key (KEY) of the subscriber, and transmit said transform (SRES) towards the first authentication means (MA2) which finally control the authenticity of said transform (SRES) to completely inhibit intercommunication in the event of authenticity not confirmed by said control.
Inventors
- 👤 Gérald Mazziotto
- 👤 Philippe Hiolle
Bibliographic Details
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