Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2001-12-21
2008-05-27
Moazzami, Nasser (Department: 2136)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C726S004000, C726S006000, C726S017000, C726S021000, C726S023000, C713S185000
Reexamination Certificate
active
07380133
ABSTRACT:
The objective of the present invention is to propose a method that allows preventing the use of more than one identical security module for the identification and use of resources administered by an operating centre. This objective is achieved by an anti-cloning method based on the memorization of the identification numbers of the user units connected to said security module.During a connection with an operating centre these numbers are transmitted and compared with the numbers of a previous transmission. Differences are accepted as long as new numbers are added to a list previously transmitted. The security module is declared invalid if the numbers previously memorized are not included in the transmitted numbers.
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DLA Piper (US) LLP
Moazzami Nasser
Nagravision S.A.
Okoronkwo Chinwendu C
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