CH578807A5 - - Google Patents
Info
- Publication number
- CH578807A5 CH578807A5 CH1476274A CH1476274A CH578807A5 CH 578807 A5 CH578807 A5 CH 578807A5 CH 1476274 A CH1476274 A CH 1476274A CH 1476274 A CH1476274 A CH 1476274A CH 578807 A5 CH578807 A5 CH 578807A5
- Authority
- CH
- Switzerland
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
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- 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)
- Selective Calling Equipment (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1476274A CH578807A5 (de) | 1974-11-05 | 1974-11-05 | |
DE19742457663 DE2457663C2 (de) | 1974-11-05 | 1974-12-06 | Verfahren und Einrichtung zur Verbesserung der Geheimhaltung bei der verschlüsselten Nachrichtenübertragung |
SE7512172A SE412676B (sv) | 1974-11-05 | 1975-10-30 | Forfarande for forbettring av hemlighallandet vid krypterad informationsoverforing samt anordning for utforande av forfarandet |
NL7512831A NL7512831A (nl) | 1974-11-05 | 1975-10-31 | Werkwijze en inrichting voor het verbeteren van de geheimhouding bij de gecodeerde overdracht van be- richten. |
IT2896675A IT1048817B (it) | 1974-11-05 | 1975-11-03 | Procedimento e dispositivo per il miglioramento della segretezza nella trasmissione cifrata delle informazioni |
FR7534363A FR2290800A1 (fr) | 1974-11-05 | 1975-11-03 | Procede pour renforcer la protection du secret lors de la transmission codee d'informations et dispositif pour la mise en oeuvre de ce procede |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1476274A CH578807A5 (de) | 1974-11-05 | 1974-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH578807A5 true CH578807A5 (de) | 1976-08-13 |
Family
ID=4403628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1476274A CH578807A5 (de) | 1974-11-05 | 1974-11-05 |
Country Status (6)
Country | Link |
---|---|
CH (1) | CH578807A5 (de) |
DE (1) | DE2457663C2 (de) |
FR (1) | FR2290800A1 (de) |
IT (1) | IT1048817B (de) |
NL (1) | NL7512831A (de) |
SE (1) | SE412676B (de) |
Families Citing this family (2)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE455172A (de) * | 1943-04-05 | |||
CH361597A (de) * | 1958-08-23 | 1962-04-30 | Patelhold Patentverwertung | Verfahren zur Verschleierung von Nachrichtensignalen |
NL244086A (de) * | 1958-12-10 | |||
NL6906145A (de) * | 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
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1975
- 1975-10-30 SE SE7512172A patent/SE412676B/xx 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 |
---|---|
SE7512172L (sv) | 1976-05-06 |
DE2457663C2 (de) | 1983-11-17 |
SE412676B (sv) | 1980-03-10 |
IT1048817B (it) | 1980-12-20 |
DE2457663A1 (de) | 1976-05-06 |
NL7512831A (nl) | 1976-05-07 |
FR2290800A1 (fr) | 1976-06-04 |
FR2290800B3 (de) | 1979-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |