System for protecting cryptographic processing and memory...

Details System for protecting cryptographic processing and memory... System for protecting cryptographic processing and memory...

H - Electricity

04

L

H04L 9/00 (2006.01) G07B 17/00 (2006.01)

Patent

CA 2271097

An improved system for protecting cryptographic processing and memory for postal franking machines. Appropriate cryptographic processing and memory resources are contained in a Postal Security Device (PSD) (5), which defines a cryptographic and physical boundary. Cryptographic processing (18) occurs in the PSD, which provides security to these resources, thereby minimizing a successful fraudulent attack on the system. Speed of the cryptographic processing is also increased. The PSD may be in the form of an Applications Specific Integrated Circuit (ASIC) or Personal Computer Memory Card International Association (PCMCIA) Card.

L'invention concerne un système amélioré conçu pour protéger le traitement et la mémoire cryptographique de machines d'affranchissement postal. Un traitement cryptographique approprié et des ressources en mémoire adéquantes sont contenus dans un dispositif postal sécurisé (PSD) qui définit une limite cryptographique et une limite physique. Le traitement cryptographique est effectué à l'intérieur du PSD, ce qui protège les ressources, permet de minimiser les risques de manoeuvre frauduleuse sur le système, et augmente la vitesse du traitement cryptographique. Le PSD peut se présenter sous la forme d'un circuit intégré d'applications spécifiques (ASIC) ou d'une carte à puce au standard PCMCIA.

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