EP0004340A3 - Pseudorandom generation of orthogonal matrixes for scrambling purposes - Google Patents

Pseudorandom generation of orthogonal matrixes for scrambling purposes Download PDF

Info

Publication number
EP0004340A3
EP0004340A3 EP79100778A EP79100778A EP0004340A3 EP 0004340 A3 EP0004340 A3 EP 0004340A3 EP 79100778 A EP79100778 A EP 79100778A EP 79100778 A EP79100778 A EP 79100778A EP 0004340 A3 EP0004340 A3 EP 0004340A3
Authority
EP
European Patent Office
Prior art keywords
orthogonal matrixes
pseudorandom generation
scrambling
purposes
scrambling purposes
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.)
Granted
Application number
EP79100778A
Other versions
EP0004340B1 (en
EP0004340A2 (en
Inventor
Jorg Dr. Dr.-Ing. Robra
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.)
Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Original Assignee
Tekade Felten and Guilleaume Fernmeldeanlagen 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 Tekade Felten and Guilleaume Fernmeldeanlagen GmbH filed Critical Tekade Felten and Guilleaume Fernmeldeanlagen GmbH
Publication of EP0004340A2 publication Critical patent/EP0004340A2/en
Publication of EP0004340A3 publication Critical patent/EP0004340A3/en
Application granted granted Critical
Publication of EP0004340B1 publication Critical patent/EP0004340B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
EP79100778A 1978-03-17 1979-03-15 Pseudorandom generation of orthogonal matrixes for scrambling purposes Expired EP0004340B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2811635 1978-03-17
DE19782811635 DE2811635A1 (en) 1978-03-17 1978-03-17 PSEUDO-ACCESSIBLE PRODUCTION OF ORTHOGONAL MATRICES FOR ENCYCLING PURPOSES

Publications (3)

Publication Number Publication Date
EP0004340A2 EP0004340A2 (en) 1979-10-03
EP0004340A3 true EP0004340A3 (en) 1979-10-17
EP0004340B1 EP0004340B1 (en) 1980-10-15

Family

ID=6034702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100778A Expired EP0004340B1 (en) 1978-03-17 1979-03-15 Pseudorandom generation of orthogonal matrixes for scrambling purposes

Country Status (2)

Country Link
EP (1) EP0004340B1 (en)
DE (2) DE2811635A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8301458A (en) * 1983-04-26 1984-11-16 Philips Nv METHOD FOR DISTRIBUTING AND USING ENCRYPTION KEYS.
JP2001513213A (en) * 1997-02-26 2001-08-28 シーメンス アクチエンゲゼルシヤフト Method and apparatus for computer-assisted transposition for transposition of digital signals and method and apparatus for encryption of digital signals
DE102009036385B4 (en) * 2009-08-06 2017-04-06 Fachhochschule Schmalkalden Permutationssteuerinformationsgenerator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523828B1 (en) * 1975-05-30 1976-11-25 Tekade Felten & Guilleaume Method for obfuscating speech signals with the aid of orthogonal matrices
DE2652607A1 (en) * 1976-11-19 1978-05-24 Licentia Gmbh Analogue information signal encoder - includes array of ring modulators and stores time and frequency multiplexed elements in digital form
DE2725065A1 (en) * 1976-11-19 1978-12-07 Licentia Gmbh METHOD FOR VARIOUS TRANSMISSION OF MESSAGE SIGNALS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523828B1 (en) * 1975-05-30 1976-11-25 Tekade Felten & Guilleaume Method for obfuscating speech signals with the aid of orthogonal matrices
DE2652607A1 (en) * 1976-11-19 1978-05-24 Licentia Gmbh Analogue information signal encoder - includes array of ring modulators and stores time and frequency multiplexed elements in digital form
DE2725065A1 (en) * 1976-11-19 1978-12-07 Licentia Gmbh METHOD FOR VARIOUS TRANSMISSION OF MESSAGE SIGNALS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
THE RADIO AND ELECTRONIC ENGINEER Vol. 43, Nr. 8, August 1973, London, GB, V. PHILLIPS et al.: "Speech scrambling by the matrixing of amplitude samples", Seiten 459-470 * Seite 460, linke Spalte, Zeilen 5-16; Seite 469, linke Spalte, Zeilen 36-41 * *

Also Published As

Publication number Publication date
DE2960026D1 (en) 1981-01-22
EP0004340B1 (en) 1980-10-15
EP0004340A2 (en) 1979-10-03
DE2811635A1 (en) 1979-09-20

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