ES8200980A1 - Procedimiento y dispositivo para la transmision cifrada de informacion - Google Patents

Procedimiento y dispositivo para la transmision cifrada de informacion

Info

Publication number
ES8200980A1
ES8200980A1 ES495648A ES495648A ES8200980A1 ES 8200980 A1 ES8200980 A1 ES 8200980A1 ES 495648 A ES495648 A ES 495648A ES 495648 A ES495648 A ES 495648A ES 8200980 A1 ES8200980 A1 ES 8200980A1
Authority
ES
Spain
Prior art keywords
signal blocks
information signal
information
signals
transmitting end
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
ES495648A
Other languages
English (en)
Other versions
ES495648A0 (es
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.)
CRYPTO AG
Original Assignee
CRYPTO AG
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 CRYPTO AG filed Critical CRYPTO AG
Publication of ES495648A0 publication Critical patent/ES495648A0/es
Publication of ES8200980A1 publication Critical patent/ES8200980A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H04N1/4486—Rendering the image unintelligible, e.g. scrambling using digital data encryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Storage Device Security (AREA)
  • Computer And Data Communications (AREA)
  • Communication Control (AREA)

Abstract

PROCEDIMIENTO PARA LA TRAMITACION CIFRADA DE INFORMACION, CON SUSTITUCION DE ALGUNOS BLOQUES DE INFORMACION PARA DIFICULTAR QUE ESTA PUEDA SER INTERCEPTADA. LA ESTACION EMISORA (20) ESTA UNIDA A UNA ESTACION RECEPTORA (21) A TRAVES DE UN TRAYECTO DE TRANSMISION (22). LA EMISORA (20) TIENE UNA MEMORIA DE ENTRADA (25), UN GENERADOR DE CLAVES (27), Y UN GENERADOR DE SEÑALES DE SUSTITUCION (30) O DE CLAVES AUXILIARES. LA ESTACION RECEPTORA (21) POSEE ASIMISMO UNA MEMORIA (36), UN GENERADOR DE CLAVES (38) QUE FUNCIONA EN SINCRONISMO EN EL DE LA EMISORA, Y UN GENERADOR DE CLAVES AUXILIARES (37). LOS BLOQUES DE INFORMACION SON PERMUTADOS EN EL TIEMPO A LA SALIDA DE LA MEMORIA (25) Y POR UN PROCESO DE DESCIFRADO, LA ESTACION RECEPTORA LOS COLOCA EN SU ORDEN CRONOLOGICO ORIGINAL. EL CAMBIO DE BLOQUES DE INFORMACION POR OTROS EN CLAVES AUXILIARES DIFICULTA LA CAPTACION DEL MENSAJE.
ES495648A 1979-10-18 1980-10-06 Procedimiento y dispositivo para la transmision cifrada de informacion Expired ES8200980A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH935079 1979-10-18

Publications (2)

Publication Number Publication Date
ES495648A0 ES495648A0 (es) 1981-11-16
ES8200980A1 true ES8200980A1 (es) 1981-11-16

Family

ID=4351044

Family Applications (1)

Application Number Title Priority Date Filing Date
ES495648A Expired ES8200980A1 (es) 1979-10-18 1980-10-06 Procedimiento y dispositivo para la transmision cifrada de informacion

Country Status (6)

Country Link
EP (1) EP0027572A1 (es)
JP (1) JPS5666948A (es)
BR (1) BR8006692A (es)
ES (1) ES8200980A1 (es)
NO (1) NO802740L (es)
ZA (1) ZA806394B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642688A (en) * 1983-06-24 1987-02-10 Scientific Atlanta, Inc. Method and apparatus for creating encrypted and decrypted television signals
US5008935A (en) * 1989-06-30 1991-04-16 At&T Bell Laboratories Efficient method for encrypting superblocks of data
DE4021783A1 (de) * 1990-07-11 1992-01-16 Holzer Walter Kopier- und chiffriergeraet
DE4021061C2 (de) * 1990-07-04 1998-11-05 Holzer Walter Prof Dr H C Ing Verfahren zur Codierung von faksimilen Fernkopien
EP0598357B1 (en) * 1992-11-15 1999-02-24 FONTECH Ltd Process for transmitting and/or storing information
US5801848A (en) * 1993-01-06 1998-09-01 Fontech Ltd. Process for transmitting and/or storing information
KR0184313B1 (ko) * 1993-04-09 1999-05-01 모리시타 요이찌 디지털영상신호를 스크램블 및 디스크램블해서 전송하는 스크램블전송장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271557A (fr) * 1960-07-22 1961-09-15 Philips Nv Perfectionnements aux procédés et aux dispositifs de chiffrage et déchiffrage de messages
CH559483A5 (es) * 1973-06-12 1975-02-28 Patelhold Patentverwertung

Also Published As

Publication number Publication date
EP0027572A1 (de) 1981-04-29
ES495648A0 (es) 1981-11-16
BR8006692A (pt) 1981-04-22
NO802740L (no) 1981-04-21
ZA806394B (en) 1981-10-28
JPS5666948A (en) 1981-06-05

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