ATE15964T1 - Funkuebertragung von verschluesselten signalen. - Google Patents

Funkuebertragung von verschluesselten signalen.

Info

Publication number
ATE15964T1
ATE15964T1 AT83302114T AT83302114T ATE15964T1 AT E15964 T1 ATE15964 T1 AT E15964T1 AT 83302114 T AT83302114 T AT 83302114T AT 83302114 T AT83302114 T AT 83302114T AT E15964 T1 ATE15964 T1 AT E15964T1
Authority
AT
Austria
Prior art keywords
stream
initialisation
bit
words
register
Prior art date
Application number
AT83302114T
Other languages
English (en)
Inventor
Stephen Charles Serpell
Charles Bile Brookson
John Asley Gordon
Graham Kenneth King
Original Assignee
British Telecomm
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10530099&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE15964(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by British Telecomm filed Critical British Telecomm
Application granted granted Critical
Publication of ATE15964T1 publication Critical patent/ATE15964T1/de

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
    • H04L9/06—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
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator
    • 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
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/12—Details relating to cryptographic hardware or logic circuitry
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/601—Broadcast encryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Radio Transmission System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
AT83302114T 1982-04-30 1983-04-14 Funkuebertragung von verschluesselten signalen. ATE15964T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8212623 1982-04-30
EP83302114A EP0093525B1 (de) 1982-04-30 1983-04-14 Funkübertragung von verschlüsselten Signalen

Publications (1)

Publication Number Publication Date
ATE15964T1 true ATE15964T1 (de) 1985-10-15

Family

ID=10530099

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83302114T ATE15964T1 (de) 1982-04-30 1983-04-14 Funkuebertragung von verschluesselten signalen.

Country Status (5)

Country Link
EP (1) EP0093525B1 (de)
JP (1) JPS58202644A (de)
AT (1) ATE15964T1 (de)
CA (1) CA1209664A (de)
DE (1) DE3360921D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1217755B (it) * 1988-06-01 1990-03-30 Sits Soc It Telecom Siemens Dispositivo di cifratura e decifratura per sistemi di trasmissione ad alta velocita,
US5444781A (en) * 1993-08-23 1995-08-22 Apple Computer Inc. Method and apparatus for decryption using cache storage
JPH10301492A (ja) 1997-04-23 1998-11-13 Sony Corp 暗号化装置および方法、復号装置および方法、並びに情報処理装置および方法
FI106514B (fi) * 1998-02-04 2001-02-15 Nokia Networks Oy Tiedonsiirto matkaviestinverkossa
US7277542B2 (en) 2000-09-25 2007-10-02 Broadcom Corporation Stream cipher encryption application accelerator and methods thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH402937A (de) * 1961-08-18 1965-11-30 Gretag Ag Verfahren zur Verschlüsselung von impulsförmig übertragenen Nachrichten
US4322576A (en) * 1979-12-28 1982-03-30 Racal-Milgo, Inc. Message format for secure communication over data links
US4418425A (en) * 1981-08-31 1983-11-29 Ibm Corporation Encryption using destination addresses in a TDMA satellite communications network
US4484027A (en) * 1981-11-19 1984-11-20 Communications Satellite Corporation Security system for SSTV encryption

Also Published As

Publication number Publication date
EP0093525B1 (de) 1985-10-02
EP0093525A1 (de) 1983-11-09
DE3360921D1 (en) 1985-11-07
CA1209664A (en) 1986-08-12
JPS58202644A (ja) 1983-11-25

Similar Documents

Publication Publication Date Title
US4864614A (en) Authorising coded signals
EP0094423A4 (de) Sicherheitssystem für sstv-verschlüsselung.
SE9601242D0 (sv) Method for scrambling and/or descrambling FM subcarrier data
FR2394131B1 (de)
WO2003032574A1 (en) Content transmission apparatus, content reception apparatus, content transmission program, and content reception program
EP0422230A4 (en) Data carrier and data communication apparatus using the same
TR24440A (tr) Hafiza kartli bir desifre edici kullanan bir oedemeli televizyon sistem
ID23916A (id) Metode dan perangkat untuk pemancaran arus data yang disandikan
EA200100093A1 (ru) Способ и устройство для криптографической передачи данных
ES2071969T3 (es) Metodo y aparato para la encriptacion/desencriptacion de multisonido digital en television.
ATE325505T1 (de) Sicheres datensignalübertragungssystem
NO923933L (no) Fremgangsmaate for aa synkronisere den pseudo-tilfeldige binaersekvens i en descrambler
ATE15964T1 (de) Funkuebertragung von verschluesselten signalen.
CA1206528A (en) Voice encryption and decryption system
ES8702756A1 (es) Procedimiento de difusion de datos,tales como informaciones escritas de los datos numericos o alfanumericos o logiciales y sistema para poner en practica dicho procedimiento
FI76660C (fi) Oeverfoeringssystem.
DE69925923D1 (de) Sicheres datenübertragungssystem
GB2155281A (en) Probabilistic scrambler and method of probabilistic scrambling
US2530142A (en) Secret signaling system
JPH10336128A (ja) ディジタル放送のスクランブルシステム
JPS6272243A (ja) 暗号化方式
IT1157144B (it) Sistema di procedimento di protezione per impedire la ricezione non autorizzata di trasmissioni televisive via satellite ad abbonamento sstv
EP0216595A3 (de) Datenverschlüsselung
EP0230327A3 (de) Teletext-Übertragungssysteme
JPS645242A (en) Bit scramble circuit

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee
RZN Patent revoked