FR2136503A5 - - Google Patents

Info

Publication number
FR2136503A5
FR2136503A5 FR7213651A FR7213651A FR2136503A5 FR 2136503 A5 FR2136503 A5 FR 2136503A5 FR 7213651 A FR7213651 A FR 7213651A FR 7213651 A FR7213651 A FR 7213651A FR 2136503 A5 FR2136503 A5 FR 2136503A5
Authority
FR
France
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
FR7213651A
Other languages
French (fr)
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.)
Gretag AG
Original Assignee
Gretag 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 Gretag AG filed Critical Gretag AG
Application granted granted Critical
Publication of FR2136503A5 publication Critical patent/FR2136503A5/fr
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
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Paper (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FR7213651A 1971-04-19 1972-04-18 Expired FR2136503A5 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH563571A CH539989A (de) 1971-04-19 1971-04-19 Verfahren und Vorrichtung zur chiffrierten Nachrichtenübermittlung

Publications (1)

Publication Number Publication Date
FR2136503A5 true FR2136503A5 (de) 1972-12-22

Family

ID=4296906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7213651A Expired FR2136503A5 (de) 1971-04-19 1972-04-18

Country Status (9)

Country Link
CA (1) CA957947A (de)
CH (1) CH539989A (de)
DE (1) DE2218447C3 (de)
FR (1) FR2136503A5 (de)
GB (1) GB1388035A (de)
IT (1) IT951865B (de)
NL (1) NL7205255A (de)
NO (1) NO135226C (de)
SE (1) SE380414B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2300472A1 (fr) * 1975-02-05 1976-09-03 Europ Handelsges Anst Procede et dispositif de syn
FR2381423A1 (fr) * 1977-02-16 1978-09-15 Licentia Gmbh Procede de reglage de generateurs de textes cles dans des appareils de chiffrement
EP0101636A2 (de) * 1982-08-19 1984-02-29 BBC Aktiengesellschaft Brown, Boveri & Cie. Verfahren zum Synchronisieren der Verschlüsselung und Entschlüsselung beim Übertragen digitaler, verschlüsselter Daten und Vorrichtung zum Ausführen dieses Verfahrens

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH578807A5 (de) * 1974-11-05 1976-08-13 Patelhold Patentverwertung
DE2507805C1 (de) * 1975-02-24 1993-07-15 Siemens Ag Verfahren zur Einphasung von Schluesselgeraeten
DE2908979C3 (de) * 1979-03-08 1982-03-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur verschlüsselten Übertragung von Faksimile-Daten
US4288659A (en) * 1979-05-21 1981-09-08 Atalla Technovations Method and means for securing the distribution of encoding keys
EP0022069B1 (de) * 1979-06-08 1983-09-21 GRETAG Aktiengesellschaft Vorrichtung zur chiffrierten Übermittlung von Nachrichten
DE3003998A1 (de) * 1980-02-04 1981-09-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt System zur ver- und entschluesselung von daten
SE447859B (sv) * 1984-12-10 1986-12-15 Datakonsult I Malmo Ab Krypteringsanordning samt dekrypteringsanordning
AU601370B2 (en) * 1986-06-09 1990-09-13 Datakonsult I Malmo Ab Ciphering and deciphering device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216921C2 (de) * 1963-12-24 1976-05-13 Gretag Ag Verfahren zur Synchronisierung der Ver- und Entschluesselung von impulsfoermigen, binaer codierten Nachrichten, bei welchem sendeseitig die Nachrichtenklarimpulse mit Schluessel-impulsen gemischt werden

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2300472A1 (fr) * 1975-02-05 1976-09-03 Europ Handelsges Anst Procede et dispositif de syn
FR2381423A1 (fr) * 1977-02-16 1978-09-15 Licentia Gmbh Procede de reglage de generateurs de textes cles dans des appareils de chiffrement
EP0101636A2 (de) * 1982-08-19 1984-02-29 BBC Aktiengesellschaft Brown, Boveri & Cie. Verfahren zum Synchronisieren der Verschlüsselung und Entschlüsselung beim Übertragen digitaler, verschlüsselter Daten und Vorrichtung zum Ausführen dieses Verfahrens
EP0101636A3 (en) * 1982-08-19 1984-12-05 Bbc Aktiengesellschaft Brown, Boveri & Cie. Method of synchronising encryption and decryption during the transmission of digital encrypted data, and apparatus for carrying out said method

Also Published As

Publication number Publication date
CH539989A (de) 1973-07-31
GB1388035A (en) 1975-03-19
NO135226C (de) 1977-03-02
DE2218447A1 (de) 1972-10-26
DE2218447C3 (de) 1981-05-14
NL7205255A (de) 1972-10-23
IT951865B (it) 1973-07-10
CA957947A (en) 1974-11-19
DE2218447B2 (de) 1980-09-11
SE380414B (sv) 1975-11-03
NO135226B (de) 1976-11-22

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Legal Events

Date Code Title Description
ST Notification of lapse