CH539989A - Method and device for encrypted message transmission - Google Patents

Method and device for encrypted message transmission

Info

Publication number
CH539989A
CH539989A CH563571A CH563571A CH539989A CH 539989 A CH539989 A CH 539989A CH 563571 A CH563571 A CH 563571A CH 563571 A CH563571 A CH 563571A CH 539989 A CH539989 A CH 539989A
Authority
CH
Switzerland
Prior art keywords
message transmission
encrypted message
encrypted
transmission
message
Prior art date
Application number
CH563571A
Other languages
German (de)
Inventor
Pierre Dr Schmid
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
Priority to CH563571A priority Critical patent/CH539989A/en
Priority to DE19722218447 priority patent/DE2218447C3/en
Priority to NO132372A priority patent/NO135226C/no
Priority to FR7213651A priority patent/FR2136503A5/fr
Priority to SE503172A priority patent/SE380414B/en
Priority to IT2328772A priority patent/IT951865B/en
Priority to CA139,894A priority patent/CA957947A/en
Priority to NL7205255A priority patent/NL7205255A/xx
Priority to GB1820972A priority patent/GB1388035A/en
Publication of CH539989A publication Critical patent/CH539989A/en

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)
CH563571A 1971-04-19 1971-04-19 Method and device for encrypted message transmission CH539989A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CH563571A CH539989A (en) 1971-04-19 1971-04-19 Method and device for encrypted message transmission
DE19722218447 DE2218447C3 (en) 1971-04-19 1972-04-17 Method and device for encrypted message transmission
NO132372A NO135226C (en) 1971-04-19 1972-04-17
FR7213651A FR2136503A5 (en) 1971-04-19 1972-04-18
SE503172A SE380414B (en) 1971-04-19 1972-04-18 KIT FOR TRANSMISSION OF ENFIRED MESSAGES AND DEVICE FOR IMPLEMENTING THE KIT
IT2328772A IT951865B (en) 1971-04-19 1972-04-18 PROCEDURE AND DEVICE FOR THE TRANSMISSION OF ENCRYPTED INFORMATION
CA139,894A CA957947A (en) 1971-04-19 1972-04-18 Method of and apparatus for encoded communications transmission
NL7205255A NL7205255A (en) 1971-04-19 1972-04-19
GB1820972A GB1388035A (en) 1971-04-19 1972-04-19 Method of and apparatus for encoded communications transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH563571A CH539989A (en) 1971-04-19 1971-04-19 Method and device for encrypted message transmission

Publications (1)

Publication Number Publication Date
CH539989A true CH539989A (en) 1973-07-31

Family

ID=4296906

Family Applications (1)

Application Number Title Priority Date Filing Date
CH563571A CH539989A (en) 1971-04-19 1971-04-19 Method and device for encrypted message transmission

Country Status (9)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018945A1 (en) * 1979-05-21 1980-11-27 Atalla Technovations DATA TREATMENT DEVICE AND METHOD FOR SECURING THE TRANSMISSION OF DATA

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH578807A5 (en) * 1974-11-05 1976-08-13 Patelhold Patentverwertung
CH581930A5 (en) * 1975-02-05 1976-11-15 Europ Handelsges Anst
DE2507805C1 (en) * 1975-02-24 1993-07-15 Siemens Ag Procedure for the phasing in of key devices
DE2706421C2 (en) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Procedure for setting ciphertext generators in encryption devices
DE2908979C3 (en) * 1979-03-08 1982-03-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Process for encrypted transmission of facsimile data
ATE4762T1 (en) * 1979-06-08 1983-10-15 Gretag Aktiengesellschaft DEVICE FOR ENCRYPTED TRANSMISSION OF MESSAGES.
DE3003998A1 (en) * 1980-02-04 1981-09-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt DATA ENCRYPTION AND DECRYLING SYSTEM
DE3370918D1 (en) * 1982-08-19 1987-05-14 Bbc Brown Boveri & Cie Method of synchronising encryption and decryption during the transmission of digital encrypted data, and apparatus for carrying out said method
SE447859B (en) * 1984-12-10 1986-12-15 Datakonsult I Malmo Ab Encoding and decoding appts.
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 (en) * 1963-12-24 1976-05-13 Gretag Ag Method for the synchronization of the encryption and decryption of impulse-shaped, binary coded messages, in which the message clear pulses are mixed with key pulses on the sending side

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018945A1 (en) * 1979-05-21 1980-11-27 Atalla Technovations DATA TREATMENT DEVICE AND METHOD FOR SECURING THE TRANSMISSION OF DATA

Also Published As

Publication number Publication date
DE2218447A1 (en) 1972-10-26
NL7205255A (en) 1972-10-23
NO135226C (en) 1977-03-02
DE2218447C3 (en) 1981-05-14
CA957947A (en) 1974-11-19
GB1388035A (en) 1975-03-19
IT951865B (en) 1973-07-10
NO135226B (en) 1976-11-22
FR2136503A5 (en) 1972-12-22
SE380414B (en) 1975-11-03
DE2218447B2 (en) 1980-09-11

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Legal Events

Date Code Title Description
PL Patent ceased