DE3472875D1 - Cryptographic transmission system - Google Patents

Cryptographic transmission system

Info

Publication number
DE3472875D1
DE3472875D1 DE8585900393T DE3472875T DE3472875D1 DE 3472875 D1 DE3472875 D1 DE 3472875D1 DE 8585900393 T DE8585900393 T DE 8585900393T DE 3472875 T DE3472875 T DE 3472875T DE 3472875 D1 DE3472875 D1 DE 3472875D1
Authority
DE
Germany
Prior art keywords
transmission system
cryptographic transmission
cryptographic
transmission
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
Application number
DE8585900393T
Other languages
English (en)
Inventor
Bruce Mcnair
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of DE3472875D1 publication Critical patent/DE3472875D1/de
Expired legal-status Critical Current

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
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
DE8585900393T 1984-01-03 1984-12-06 Cryptographic transmission system Expired DE3472875D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/567,815 US4642424A (en) 1984-01-03 1984-01-03 Cryptographic transmission system
PCT/US1984/002016 WO1985003182A1 (en) 1984-01-03 1984-12-06 Cryptographic transmission system

Publications (1)

Publication Number Publication Date
DE3472875D1 true DE3472875D1 (en) 1988-08-25

Family

ID=24268755

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585900393T Expired DE3472875D1 (en) 1984-01-03 1984-12-06 Cryptographic transmission system

Country Status (7)

Country Link
US (1) US4642424A (de)
EP (1) EP0167565B1 (de)
JP (1) JPS61501001A (de)
KR (1) KR910003219B1 (de)
CA (1) CA1223932A (de)
DE (1) DE3472875D1 (de)
WO (1) WO1985003182A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116571A (ja) * 1981-12-29 1983-07-11 富士通株式会社 マイクロコンピユ−タに於ける命令暗号化方式及びその実施に使用されるマイクロコンピユ−タ
DK152239C (da) * 1983-12-30 1988-07-04 Sp Radio As Fremgangsmaade til kryptografisk overfoering af talesignaler og kommunikationsstation til udoevelse af fremgangsmaaden
US4922534A (en) * 1985-11-18 1990-05-01 General Datacomm, Inc. Intelligent synchronous modem and communication system incorporating the same
US4893339A (en) * 1986-09-03 1990-01-09 Motorola, Inc. Secure communication system
US4856063A (en) * 1988-01-27 1989-08-08 Technical Communication Corporation No-overhead synchronization for cryptographic systems
US4910777A (en) * 1988-09-20 1990-03-20 At&T Bell Laboratories Packet switching architecture providing encryption across packets
US5016275A (en) * 1988-10-28 1991-05-14 International Business Machines Corporation Buffered encryption/decryption
DE4014855C1 (de) * 1990-05-09 1991-11-14 Siemens Ag, 8000 Muenchen, De
DE4305067C2 (de) * 1993-02-19 1996-02-08 Ant Nachrichtentech Verfahren und Einrichtung zum Synchronisieren eines Entschlüsslers
ATE176972T1 (de) * 1993-06-30 1999-03-15 Siemens Ag Verfahren zur datensicherung in einem b-isdn telekommunikationssystem
US6426959B1 (en) 1998-01-20 2002-07-30 Innovative Communications Technologies, Inc. System and method for facilitating component management in a multiple vendor satellite communications network
US6381250B1 (en) 1998-01-23 2002-04-30 Innovative Communications Technologies, Inc. Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
US6497656B1 (en) * 2000-02-08 2002-12-24 General Electric Company Integrated wireless broadband communications network
US7254232B2 (en) * 2001-02-14 2007-08-07 Copytele, Inc. Method and system for selecting encryption keys from a plurality of encryption keys
US7085376B2 (en) * 2001-02-14 2006-08-01 Copytele, Inc. Method and system for securely exchanging encryption key determination information
US7095856B2 (en) * 2002-03-29 2006-08-22 Motorola, Inc. Method and apparatus to maintain encryption synchronization in a multi-modulation TDM system
KR100967880B1 (ko) * 2004-11-26 2010-07-05 삼성전자주식회사 Ｍ6 블록암호시스템
EP1742475A1 (de) * 2005-07-07 2007-01-10 Nagravision S.A. Verfahren und Vorrichtung zu verschlüsselten Daten mit bedingtem Zugriff
JP2008278459A (ja) * 2007-03-30 2008-11-13 Seiko Epson Corp 通信システム、送信装置、受信装置及び通信方法並びに半導体素子
EP3731044B1 (de) 2019-04-26 2022-09-07 Kabushiki Kaisha Yaskawa Denki Kommunikationssystem und kommunikationsverfahren

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208544A (en) * 1961-10-04 1980-06-17 Acf Industries, Incorporated Checker and automatic synchronizer for coding equipment
US4172963A (en) * 1961-11-20 1979-10-30 Acf Industries, Incorporated Checker and automatic synchronizer for coding equipment
GB1008831A (de) * 1963-01-22
US4434322A (en) * 1965-08-19 1984-02-28 Racal Data Communications Inc. Coded data transmission system
US4091423A (en) * 1975-03-17 1978-05-23 Datotek, Inc. Synchronous digital data scrambling system
US4169212A (en) * 1975-04-14 1979-09-25 Datotek, Inc. Multi-mode digital enciphering system
US4166922A (en) * 1975-04-14 1979-09-04 Datotek, Inc. Multi-mode digital enciphering system with repeated priming sequences
US4079188A (en) * 1975-04-14 1978-03-14 Datotek, Inc. Multi-mode digital enciphering system
NL171952C (nl) * 1975-05-14 1983-06-01 Nederlanden Staat Zelfsynchroniserend transmissiestelsel voor de overdracht van binaire signalen, onder gebruikmaking van scramblers, respectievelijk descramblers.
DE2706421C2 (de) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Einstellen von Schlüsseltextgeneratoren in Chiffriergeräten
JPS54129901A (en) * 1978-03-31 1979-10-08 Toshiba Corp Secret communication system
DE2827615B2 (de) * 1978-06-23 1981-08-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Schaltungsanordnung zum Synchronisieren zwei oder mehrerer räumlich voneinander entfernter digital arbeitender nachrichtentechnischer Einrichtungen
DE2962468D1 (en) * 1978-10-27 1982-05-19 Gretag Ag Enciphering and deciphering apparatus
US4274085A (en) * 1979-06-28 1981-06-16 Motorola, Inc. Flexible mode DES system
US4434323A (en) * 1981-06-29 1984-02-28 Motorola, Inc. Scrambler key code synchronizer

Also Published As

Publication number Publication date
WO1985003182A1 (en) 1985-07-18
CA1223932A (en) 1987-07-07
KR850700198A (ko) 1985-10-25
KR910003219B1 (ko) 1991-05-22
EP0167565B1 (de) 1988-07-20
JPH0420541B2 (de) 1992-04-03
US4642424A (en) 1987-02-10
JPS61501001A (ja) 1986-05-15
EP0167565A1 (de) 1986-01-15

Similar Documents

Publication Publication Date Title
GB2162722B (en) Data transmission system
EP0156580A3 (en) Data transmission system
GB2161676B (en) Data transmission system
GB2191662B (en) Parallel transmission system
GB8625712D0 (en) Transmission system
EP0157258A3 (en) Signed document transmission system
GB8628046D0 (en) Transmission system
GB2162022B (en) Data transmission system
EP0168258A3 (en) Loop transmission system
DE3472875D1 (en) Cryptographic transmission system
GB8522329D0 (en) Transmission
GB8411896D0 (en) Transmission
GB8332237D0 (en) Transmission system
GB8616616D0 (en) Transmission system
GB2162721B (en) Transmission system
GB2155125B (en) Transmission interlock system
DE3571110D1 (en) Data transmission system
GB8420767D0 (en) Power transmission system
GB8620771D0 (en) Transmission system
EP0184920A3 (en) Transmission direction selection system
GB8621649D0 (en) Transmission system
GB2168574B (en) Transmission system
GB2159377B (en) Data transmission system
GB8700669D0 (en) Transmission system
GB8510864D0 (en) Transmission

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BLUMBACH, KRAMER & PARTNER, 65193 WIESBADEN

8339 Ceased/non-payment of the annual fee