H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 9/32 (2006.01) G06Q 20/00 (2006.01) G07F 7/10 (2006.01)
Patent
CA 2281816
Method for checking authorization incorporating a way to impart to a so-called smart card (SmartCard) an encryption key or equivalent key and including a way to cause a microprocessor, by means of the encryption key and at least one number, to perform a calculation whose result comprises a signature, and including a way to have said signature together with said number transferred to a system for which authorization is to be shown which includes a computer in which said encryption key is stored, said computer being programmed to carry out said calculation to obtain said signature and then to compare the latter signature with the first-mentioned signature.
L'invention concerne un procédé permettant de vérifier une autorisation. Ce procédé consiste a) à affecter à une carte à puce (SmartCard) clé cryptographique ou analogue, b) à faire effectuer par un microprocesseur un calcul faisant intervenir la clé cryptographique et au moins un nombre, calcul dont le résultat comporte alors une signature, c) à transférer au système auquel l'autorisation doit être présentée cette signature accompagnée du nombre, ce système comprenant un ordinateur dans lequel est mémorisée la clé cryptographique, d) à programmer ce système pour qu'il effectue ce calcul de façon à obtenir la signature, et e) à comparer cette signature à la première signature mentionnée.
Ericsson Canada Patent Group
Telefonaktiebolaget Lm Ericsson
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