NO148133C - PROCEDURE FOR SYNCHRONIZING KEY DEVICES IN DATA TRANSMISSION SYSTEMS - Google Patents

PROCEDURE FOR SYNCHRONIZING KEY DEVICES IN DATA TRANSMISSION SYSTEMS

Info

Publication number
NO148133C
NO148133C NO772469A NO772469A NO148133C NO 148133 C NO148133 C NO 148133C NO 772469 A NO772469 A NO 772469A NO 772469 A NO772469 A NO 772469A NO 148133 C NO148133 C NO 148133C
Authority
NO
Norway
Prior art keywords
procedure
data transmission
transmission systems
key devices
synchronizing key
Prior art date
Application number
NO772469A
Other languages
Norwegian (no)
Other versions
NO772469L (en
NO148133B (en
Inventor
Edward Van Wijhe
Ekkehard Glitz
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of NO772469L publication Critical patent/NO772469L/en
Publication of NO148133B publication Critical patent/NO148133B/en
Publication of NO148133C publication Critical patent/NO148133C/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Lock And Its Accessories (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
NO772469A 1976-07-15 1977-07-12 PROCEDURE FOR SYNCHRONIZING KEY DEVICES IN DATA TRANSMISSION SYSTEMS NO148133C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2631823A DE2631823C3 (en) 1976-07-15 1976-07-15 Method for synchronizing key devices for data transmission systems

Publications (3)

Publication Number Publication Date
NO772469L NO772469L (en) 1978-01-17
NO148133B NO148133B (en) 1983-05-02
NO148133C true NO148133C (en) 1983-08-17

Family

ID=5983088

Family Applications (1)

Application Number Title Priority Date Filing Date
NO772469A NO148133C (en) 1976-07-15 1977-07-12 PROCEDURE FOR SYNCHRONIZING KEY DEVICES IN DATA TRANSMISSION SYSTEMS

Country Status (7)

Country Link
AT (1) AT355635B (en)
CH (1) CH617553A5 (en)
DE (1) DE2631823C3 (en)
FR (1) FR2358789A1 (en)
GB (1) GB1532363A (en)
NL (1) NL7707323A (en)
NO (1) NO148133C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2920589C2 (en) * 1979-05-21 1981-06-11 Siemens AG, 1000 Berlin und 8000 München Method and circuit arrangement for checking the synchronism of two key devices
DE2939159C3 (en) * 1979-09-27 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Method for the synchronization of key devices that are operated as part of a packet network
JPH0620228B2 (en) * 1984-03-13 1994-03-16 キヤノン株式会社 Equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272974A (en) * 1960-12-29
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
FR1582790A (en) * 1968-01-16 1969-10-10
DE2017282C3 (en) * 1970-04-10 1974-05-02 Siemens Ag Communication system with two-way traffic and pulse operation
US3798605A (en) * 1971-06-30 1974-03-19 Ibm Centralized verification system
US3764742A (en) * 1971-12-23 1973-10-09 Ibm Cryptographic identification system

Also Published As

Publication number Publication date
DE2631823B2 (en) 1978-05-03
DE2631823A1 (en) 1978-01-19
NL7707323A (en) 1978-01-17
GB1532363A (en) 1978-11-15
FR2358789A1 (en) 1978-02-10
ATA500277A (en) 1979-08-15
DE2631823C3 (en) 1984-03-01
NO772469L (en) 1978-01-17
NO148133B (en) 1983-05-02
AT355635B (en) 1980-03-10
FR2358789B1 (en) 1985-04-05
CH617553A5 (en) 1980-05-30

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