SE7512172L - Sett och anordning for forbettring av hemlighallandet vid krypterad informationsoverforing - Google Patents

Sett och anordning for forbettring av hemlighallandet vid krypterad informationsoverforing

Info

Publication number: SE7512172L
Authority: SE; Sweden
Prior art keywords: secret; country; improving; information transfer; encrypted information
Prior art date: 1974-11-05

Application number

SE7512172A

Other languages

English (en)

Other versions

SE412676B (sv

Inventor

H Baldinger

G Guanella

Original Assignee

Patelhold Patentverwertung

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.)

1974-11-05

Filing date

1975-10-30

Publication date

1976-05-06

1975-10-30 Application filed by Patelhold Patentverwertung filed Critical Patelhold Patentverwertung

1976-05-06 Publication of SE7512172L publication Critical patent/SE7512172L/sv

1980-03-10 Publication of SE412676B publication Critical patent/SE412676B/sv

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

Landscapes

Engineering & Computer Science (AREA)
Computer Security & Cryptography (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Mobile Radio Communication Systems (AREA)
Selective Calling Equipment (AREA)
Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

SE7512172A 1974-11-05 1975-10-30 Forfarande for forbettring av hemlighallandet vid krypterad informationsoverforing samt anordning for utforande av forfarandet SE412676B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH1476274A CH578807A5 (sv)	1974-11-05	1974-11-05

Publications (2)

Publication Number	Publication Date
SE7512172L true SE7512172L (sv)	1976-05-06
SE412676B SE412676B (sv)	1980-03-10

Family

ID=4403628

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7512172A SE412676B (sv)	1974-11-05	1975-10-30	Forfarande for forbettring av hemlighallandet vid krypterad informationsoverforing samt anordning for utforande av forfarandet

Country Status (6)

Country	Link
CH (1)	CH578807A5 (sv)
DE (1)	DE2457663C2 (sv)
FR (1)	FR2290800A1 (sv)
IT (1)	IT1048817B (sv)
NL (1)	NL7512831A (sv)
SE (1)	SE412676B (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4310720A (en) *	1978-03-31	1982-01-12	Pitney Bowes Inc.	Computer accessing system
FR2664113B1 (fr) *	1990-06-28	1993-06-04	Alcatel Transmission	Procede de transmission numerique a etalement de spectre par sequence directe a changement de sequences en cours de transmission, et emetteur et recepteur le mettant en óoeuvre.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE455172A (sv) *	1943-04-05
CH361597A (de) *	1958-08-23	1962-04-30	Patelhold Patentverwertung	Verfahren zur Verschleierung von Nachrichtensignalen
NL244086A (sv) *	1958-12-10
NL6906145A (sv) *	1968-05-15	1969-11-18
CH518658A (de) *	1970-07-07	1972-01-31	Patelhold Patentverwaltungs Un	Verfahren zur verschlüsselten Nachrichtenübermittlung durch zeitliche Vertauschung von Informationselementen
CH539989A (de) *	1971-04-19	1973-07-31	Gretag Ag	Verfahren und Vorrichtung zur chiffrierten Nachrichtenübermittlung

1974
- 1974-11-05 CH CH1476274A patent/CH578807A5/xx not_active IP Right Cessation
- 1974-12-06 DE DE19742457663 patent/DE2457663C2/de not_active Expired
1975
- 1975-10-30 SE SE7512172A patent/SE412676B/sv not_active IP Right Cessation
- 1975-10-31 NL NL7512831A patent/NL7512831A/xx not_active Application Discontinuation
- 1975-11-03 IT IT2896675A patent/IT1048817B/it active
- 1975-11-03 FR FR7534363A patent/FR2290800A1/fr active Granted

Also Published As

Publication number	Publication date
NL7512831A (nl)	1976-05-07
FR2290800B3 (sv)	1979-06-29
FR2290800A1 (fr)	1976-06-04
DE2457663C2 (de)	1983-11-17
DE2457663A1 (de)	1976-05-06
IT1048817B (it)	1980-12-20
CH578807A5 (sv)	1976-08-13
SE412676B (sv)	1980-03-10

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SE7512172L (sv)	1976-05-06	Sett och anordning for forbettring av hemlighallandet vid krypterad informationsoverforing
NL7510408A (nl)	1976-03-05	Elektro-optische inrichting.

Legal Events

Date	Code	Title	Description
1995-01-31	NUG	Patent has lapsed	Ref document number: 7512172-3 Effective date: 19880627 Format of ref document f/p: F

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1995-01-31

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