DK0447063T3 - Sikkerhedsforbedring i en databehandlingsenhed ved brug af en ægthedskontrol af dynamiske parameter - Google Patents

Sikkerhedsforbedring i en databehandlingsenhed ved brug af en ægthedskontrol af dynamiske parameter

Info

Publication number
DK0447063T3
DK0447063T3 DK91301583T DK91301583T DK0447063T3 DK 0447063 T3 DK0447063 T3 DK 0447063T3 DK 91301583 T DK91301583 T DK 91301583T DK 91301583 T DK91301583 T DK 91301583T DK 0447063 T3 DK0447063 T3 DK 0447063T3
Authority
DK
Denmark
Prior art keywords
decryption key
processing
data
predetermined decryption
data processing
Prior art date
Application number
DK91301583T
Other languages
Danish (da)
English (en)
Inventor
Roy Allen Griffin Iii
James Neil Esserman
Steven Edward Anderson
Original Assignee
Nextlevel Systems Inc
Gen Instrument Corp
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 Nextlevel Systems Inc, Gen Instrument Corp filed Critical Nextlevel Systems Inc
Application granted granted Critical
Publication of DK0447063T3 publication Critical patent/DK0447063T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Collating Specific Patterns (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Burglar Alarm Systems (AREA)
DK91301583T 1990-03-13 1991-02-27 Sikkerhedsforbedring i en databehandlingsenhed ved brug af en ægthedskontrol af dynamiske parameter DK0447063T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/493,006 US5151938A (en) 1990-03-13 1990-03-13 Security enhancement in a data processor through use of dynamic parameter authentication

Publications (1)

Publication Number Publication Date
DK0447063T3 true DK0447063T3 (da) 1999-07-05

Family

ID=23958505

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91301583T DK0447063T3 (da) 1990-03-13 1991-02-27 Sikkerhedsforbedring i en databehandlingsenhed ved brug af en ægthedskontrol af dynamiske parameter

Country Status (11)

Country Link
US (1) US5151938A (fr)
EP (1) EP0447063B1 (fr)
JP (1) JP3245187B2 (fr)
KR (1) KR100195816B1 (fr)
AT (1) ATE172830T1 (fr)
AU (1) AU639076B2 (fr)
CA (1) CA2037778C (fr)
DE (1) DE69130401T2 (fr)
DK (1) DK0447063T3 (fr)
ES (1) ES2122966T3 (fr)
IE (1) IE76286B1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365587A (en) * 1993-03-11 1994-11-15 International Business Machines Corporation Self modifying access code for altering capabilities
JP3647907B2 (ja) * 1994-09-09 2005-05-18 富士通株式会社 暗号化ソフトウェアの解凍システム
JP3294739B2 (ja) * 1995-03-30 2002-06-24 三洋電機株式会社 Ｆｍ多重放送のスクランブルまたはデスクランブル方法
US5960086A (en) * 1995-11-02 1999-09-28 Tri-Strata Security, Inc. Unified end-to-end security methods and systems for operating on insecure networks
US5953419A (en) * 1996-05-06 1999-09-14 Symantec Corporation Cryptographic file labeling system for supporting secured access by multiple users
US6088449A (en) * 1996-11-05 2000-07-11 Tri-Strata Security, Inc. Tri-signature security architecture systems and methods
JP4268690B2 (ja) * 1997-03-26 2009-05-27 ソニー株式会社 認証システムおよび方法、並びに認証方法
US5991402A (en) * 1997-09-23 1999-11-23 Aegisoft Corporation Method and system of dynamic transformation of encrypted material
US20010044901A1 (en) * 1998-03-24 2001-11-22 Symantec Corporation Bubble-protected system for automatic decryption of file data on a per-use basis and automatic re-encryption
US6912655B1 (en) 1999-08-09 2005-06-28 Tristrata Security Inc. Network security architecture system utilizing seals
US7000119B1 (en) 2000-04-20 2006-02-14 Realnetworks, Inc. Instruction/data protection employing derived obscuring instruction/data
JP4912797B2 (ja) * 2006-08-30 2012-04-11 三菱電機株式会社 暗号装置及び復号装置及び暗号方法及び復号方法及びプログラム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455602A (en) * 1981-05-22 1984-06-19 Data General Corporation Digital data processing system having an I/O means using unique address providing and access priority control techniques
GB2132860B (en) * 1982-12-21 1987-03-18 British Broadcasting Corp Conditional -access broadcast transmission
US4613901A (en) * 1983-05-27 1986-09-23 M/A-Com Linkabit, Inc. Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals
US4712238A (en) * 1984-06-08 1987-12-08 M/A-Com Government Systems, Inc. Selective-subscription descrambling
JPS6120442A (ja) * 1984-07-09 1986-01-29 Toshiba Corp 有料放送方式
US4864615A (en) * 1988-05-27 1989-09-05 General Instrument Corporation Reproduction of secure keys by using distributed key generation data

Also Published As

Publication number Publication date
JP3245187B2 (ja) 2002-01-07
ES2122966T3 (es) 1999-01-01
DE69130401T2 (de) 1999-04-15
CA2037778C (fr) 2001-06-05
IE76286B1 (en) 1997-10-08
ATE172830T1 (de) 1998-11-15
EP0447063A3 (en) 1992-11-25
US5151938A (en) 1992-09-29
KR100195816B1 (ko) 1999-06-15
CA2037778A1 (fr) 1991-09-14
DE69130401D1 (de) 1998-12-03
EP0447063B1 (fr) 1998-10-28
EP0447063A2 (fr) 1991-09-18
AU639076B2 (en) 1993-07-15
AU7279091A (en) 1991-09-19
IE910792A1 (en) 1991-09-25
KR910017797A (ko) 1991-11-05
JPH04220743A (ja) 1992-08-11

Similar Documents

Publication Publication Date Title
DK0447063T3 (da) Sikkerhedsforbedring i en databehandlingsenhed ved brug af en ægthedskontrol af dynamiske parameter
US6178242B1 (en) Digital recording protection system
EP1505472A3 (fr) Système de protection de données électroniques
ZA988702B (en) Method and apparatus for protection of recorded digital data
TW287253B (en) Method and apparatus for improved graphics/image processing
EP0564745A3 (fr) Appareil et système de traitement d'images en couleurs et appareil de traitement d'images
MY118874A (en) Time-shifted conditional access
EP0863662A3 (fr) Appareil de traitement d'images
DE69727320D1 (de) Aufnahmeverfahren und gerät
CA2147641A1 (fr) Copieur a fonction de chiffrement
KR980004075A (ko) 저작물의 부정 복사 방지에 적합한 데이터 수신장치, 데이터 송신장치, 정보 처리 시스템, 데이터 수신방법 및 그 방법을 기록한 정보기록 매체
EP0547682A3 (fr)
MX9602654A (es) Un metodo y aparato para almacenar de manera segura informacion delicada en un medio de almacenamiento relativamente inseguro.
CA2225001A1 (fr) Systeme d'identification de l'utilisateur d'une machine a affranchir
GB9009640D0 (en) Improved security for machine-writeable data storage systems
DE69434596D1 (de) Interruptgesteuerte Klangdatenverarbeitungsvorrichtung
ES2038928R (fr)
KR970009021A (ko) 디스크램블러 장치
JPS6419449A (en) Ciphering and protecting system for file data
JPS57130177A (en) Information retrieving device
JPS6459468A (en) Image processing device
Saffady Data entry methodologies for electronic document imaging implementations
DE59309850D1 (de) Verfahren und Vorrichtung zum Verschlüsseln und Entschlüsseln von Information
KR920003211A (ko) 카드 판독 장치
KR920003738A (ko) 스크램블링에 의한 화질열화방지 시스템