Title:
クローニング防止方法
Document Type and Number:
Japanese Patent JP4239066
Kind Code:
B2
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.
Inventors:
Jaquier Jean-Backpack
Application Number:
JP2002553623A
Publication Date:
March 18, 2009
Filing Date:
December 21, 2001
Export Citation:
Assignee:
Nagra vidion sr
International Classes:
G06F12/14; G06F1/00; G06F21/00; G06F21/34; G06K17/00; G07F7/10; H04L9/10; H04L9/32
Domestic Patent References:
| JP2000222534A | ||||
| JP10124460A | ||||
| JP10261118A |
Foreign References:
| WO1996025814A1 | ||||
| WO1998047113A1 | ||||
| EP1344195B1 |
Attorney, Agent or Firm:
Nobuyuki Matsubara
Kiyoji Muraki
Kenichi Nakayama
Hashimoto Chikako
Sayaka Matsushima
Kiyoji Muraki
Kenichi Nakayama
Hashimoto Chikako
Sayaka Matsushima