Method for checking postage stamps on letters and parcels

G - Physics – 07 – B

Patent

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Details

G07B 17/00 (2006.01)

Patent

CA 2426520

The invention relates to a method for checking postage stamps on letters and parcels, at a checkpoint . Said checkpoint deciphers the identity and authenticity of a customer system having generated the production of the stamp by decoding cryptographic security elements originating from a trusted certification point. According to the invention, this method is carried out in such a way that means contained in the checking unit determine a key for which the probability of having been used to encode the data at the certification point is particularly high.

L'invention concerne un procédé de vérification, en un point de vérification, de mentions d'affranchissement appliquées sur des objets postaux, le point de vérification décryptant, par un déchiffrement d'éléments de sécurité cryptographiques provenant d'un point de certification digne de confiance, l'identité et l'authenticité d'un système de client générant la production de mentions d'affranchissement. Le procédé selon l'invention est caractérisé en ce que des moyens contenus dans l'unité de vérification permettent de détecter une clé pour laquelle la probabilité que le déchiffrement des données s'opère, avec cette clé, dans le point de certification, est particulièrement élevée.

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