CA2250833C - Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede - Google Patents

Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede Download PDF

Info

Publication number
CA2250833C
CA2250833C CA002250833A CA2250833A CA2250833C CA 2250833 C CA2250833 C CA 2250833C CA 002250833 A CA002250833 A CA 002250833A CA 2250833 A CA2250833 A CA 2250833A CA 2250833 C CA2250833 C CA 2250833C
Authority
CA
Canada
Prior art keywords
decoder
access module
conditional access
encrypted message
key
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002250833A
Other languages
English (en)
Other versions
CA2250833A1 (fr
Inventor
Simon Paul Ashley Rix
Andrew Glasspool
Donald Watts Davies
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Irdeto BV
Original Assignee
DIGCO BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DIGCO BV filed Critical DIGCO BV
Priority claimed from PCT/EP1997/001557 external-priority patent/WO1997038530A1/fr
Publication of CA2250833A1 publication Critical patent/CA2250833A1/fr
Application granted granted Critical
Publication of CA2250833C publication Critical patent/CA2250833C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Dans un procédé servant à créer une communication sûre entre deux dispositifs, un premier dispositif génère un code à accès sélectif (Ci) et transfère ce code à un deuxième dispositif dans un premier message crypté au moyen d'un code public. Le deuxième dispositif décrypte le premier message crypté au moyen d'un code secret correspondant, afin d'obtenir le code à accès sélectif (Ci) et ce dernier est utilisé afin de crypter et de décrypter toutes les transmissions entre ces dispositifs. Dans un décodeur pour système de télévision payante, comprenant un module d'accès conditionnel et une carte intelligente, ce procédé permet d'établir une communication sûre, soit entre le module d'accès de commande et la carte intelligente, soit entre le décodeur et le module d'accès conditionnel.
CA002250833A 1996-04-03 1997-03-21 Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede Expired - Fee Related CA2250833C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP96200907 1996-04-03
EP96200907.2 1996-04-03
PCT/EP1997/001557 WO1997038530A1 (fr) 1996-04-03 1997-03-21 Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede

Publications (2)

Publication Number Publication Date
CA2250833A1 CA2250833A1 (fr) 1997-10-16
CA2250833C true CA2250833C (fr) 2006-06-13

Family

ID=36587579

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002250833A Expired - Fee Related CA2250833C (fr) 1996-04-03 1997-03-21 Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede

Country Status (1)

Country Link
CA (1) CA2250833C (fr)

Also Published As

Publication number Publication date
CA2250833A1 (fr) 1997-10-16

Similar Documents

Publication Publication Date Title
EP0891670B1 (fr) Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede
US4887296A (en) Cryptographic system for direct broadcast satellite system
KR100898437B1 (ko) 통신 네트워크에서 대칭 키를 관리하는 방법, 통신 디바이스 및 통신 네트워크에서 데이터를 처리하기 위한 디바이스
AU754015B2 (en) Method and apparatus for recording of encrypted digital data
AU755892B2 (en) Method and apparatus for secure communication of information between a plurality of digital audiovisual devices
US6266415B1 (en) Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process
CN100366083C (zh) 广播应用的条件访问系统的操作方法
JP3700982B2 (ja) グローバルトランスポートデータストリームに関する制御
AU751436B2 (en) Mechanism for matching a receiver with a security module
US20030026428A1 (en) Method of transmitting confidential data
JP4043669B2 (ja) 限定受信方式における関連情報の処理装置
CN101335579A (zh) 一种实现条件接收的方法及条件接收装置
Lee Key distribution and management for conditional access system on DBS
EP0179612A2 (fr) Système cryptographique pour un réseau de satellite à transmission en direct
KR100194790B1 (ko) 조건부 제한수신 시스템 및 그를 이용한 조건부 제한수신서비스처리방법
JP4521392B2 (ja) デコーダ及びスマートカードに関連した有料テレビジョンシステム、そのようなシステムにおける権利失効方法、及びそのようなデコーダに送信されたメッセージ
KR100977969B1 (ko) 네트워크에서의 데이터 전송 및 수신 방법
CA2250833C (fr) Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede
JPH1079730A (ja) 復号化装置
JP2001251290A (ja) データ放送システムとコンテンツの配信、蓄積、再生方法
HK1019683B (en) Method for providing a secure communication between two devices and device for using the method
HK1108595A (en) Method for operating a conditional access system for broadcast applications
ZA200100325B (en) Method and apparatus for secure communication of information between a plurality of digital audiovisual devices.

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170321