DE3472742D1 - Method for encrypted information transmission - Google Patents

Method for encrypted information transmission

Info

Publication number
DE3472742D1
DE3472742D1 DE8484111665T DE3472742T DE3472742D1 DE 3472742 D1 DE3472742 D1 DE 3472742D1 DE 8484111665 T DE8484111665 T DE 8484111665T DE 3472742 T DE3472742 T DE 3472742T DE 3472742 D1 DE3472742 D1 DE 3472742D1
Authority
DE
Germany
Prior art keywords
transmission side
code
transmitter
transmission
terminal
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
DE8484111665T
Other languages
German (de)
Inventor
Ludwig Dipl Ing Hofmann
Klaus Stadler
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE8484111665T priority Critical patent/DE3472742D1/en
Application granted granted Critical
Publication of DE3472742D1 publication Critical patent/DE3472742D1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication

Abstract

1. Method for the coded transmission of messages in transmission systems having permanently stationary and/or mobile subscriber units (terminals), for example in telephone, car telephone or radio networks, in which method a transmitter (4) for an individual subscriber code is arranged in the terminal of one transmission side and an analyser (8) is arranged in the other transmission side which is constructed as central station and is only accessible from the exchange side and in which method, in a first method step, the subscriber number is transmitted from the transmission side containing the transmitter (4) to the other transmission side, the subscriber code is determined in the latter and the receiver is set in accordance with the code and in which method, thereafter, in a second method step, the transmission path is switched through to the transmit section in the terminal containing the transmitter (4), for transmitting the coded useful signal, characterized by a hierarchical structure, in such a manner that several terminals are in each case connected to a centre in the networks and the code signalling from the terminal to the central unit occurs in a non system-compatible sequence, and also in that, in the first method step, the code set is transmitted from the transmission side containing the transmitter (4) to the other transmission side constructed as central station.
DE8484111665T 1983-09-30 1984-09-28 Method for encrypted information transmission Expired DE3472742D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8484111665T DE3472742D1 (en) 1983-09-30 1984-09-28 Method for encrypted information transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833335672 DE3335672A1 (en) 1983-09-30 1983-09-30 ENCRYPTED MESSAGE TRANSMISSION METHOD
DE8484111665T DE3472742D1 (en) 1983-09-30 1984-09-28 Method for encrypted information transmission

Publications (1)

Publication Number Publication Date
DE3472742D1 true DE3472742D1 (en) 1988-08-18

Family

ID=6210671

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19833335672 Withdrawn DE3335672A1 (en) 1983-09-30 1983-09-30 ENCRYPTED MESSAGE TRANSMISSION METHOD
DE8484111665T Expired DE3472742D1 (en) 1983-09-30 1984-09-28 Method for encrypted information transmission

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19833335672 Withdrawn DE3335672A1 (en) 1983-09-30 1983-09-30 ENCRYPTED MESSAGE TRANSMISSION METHOD

Country Status (3)

Country Link
EP (1) EP0136681B1 (en)
AT (1) ATE35754T1 (en)
DE (2) DE3335672A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393339B (en) * 1987-10-21 1991-09-25 Siemens Ag Oesterreich Apparatus for the scrambled transmission of analogue signals
WO2002056170A1 (en) * 2001-01-16 2002-07-18 Telefonaktiebolaget Lm Ericsson (Publ) Random number generator using compression
DE60125139D1 (en) * 2001-01-16 2007-01-25 Ericsson Telefon Ab L M Random number generator based on compression

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2722700A1 (en) * 1973-07-06 1978-11-30 Licentia Gmbh Communications system with synchronised scrambler - determines whether start code for received identifying character has been stored
DE2659622C2 (en) * 1976-12-30 1979-01-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Radiotelephony system
US4369434A (en) * 1979-12-20 1983-01-18 Gretag Aktiengesellschaft Enciphering/deciphering system

Also Published As

Publication number Publication date
EP0136681B1 (en) 1988-07-13
DE3335672A1 (en) 1985-04-04
EP0136681A2 (en) 1985-04-10
EP0136681A3 (en) 1985-06-05
ATE35754T1 (en) 1988-07-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee