DE3065543D1 - Digital-signal ciphering and deciphering arrangement - Google Patents
Digital-signal ciphering and deciphering arrangementInfo
- Publication number
- DE3065543D1 DE3065543D1 DE8080401460T DE3065543T DE3065543D1 DE 3065543 D1 DE3065543 D1 DE 3065543D1 DE 8080401460 T DE8080401460 T DE 8080401460T DE 3065543 T DE3065543 T DE 3065543T DE 3065543 D1 DE3065543 D1 DE 3065543D1
- Authority
- DE
- Germany
- Prior art keywords
- digital
- deciphering
- signal ciphering
- arrangement
- ciphering
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0888—Subscription systems therefor
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/12—Details relating to cryptographic hardware or logic circuitry
- H04L2209/125—Parallelization or pipelining, e.g. for accelerating processing of cryptographic operations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Storage Device Security (AREA)
- Computer And Data Communications (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7925256A FR2467515A1 (fr) | 1979-10-10 | 1979-10-10 | Systeme de chiffrement et de dechiffrement d'un signal numerique |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3065543D1 true DE3065543D1 (en) | 1983-12-15 |
Family
ID=9230547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8080401460T Expired DE3065543D1 (en) | 1979-10-10 | 1980-10-10 | Digital-signal ciphering and deciphering arrangement |
Country Status (5)
Country | Link |
---|---|
US (1) | US4431865A (de) |
EP (1) | EP0027423B1 (de) |
DE (1) | DE3065543D1 (de) |
FR (1) | FR2467515A1 (de) |
WO (1) | WO1984004438A1 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH658759A5 (de) * | 1983-05-20 | 1986-11-28 | Gretag Ag | Verfahren und vorrichtung zur chiffrierten datenuebermittlung. |
US4596898A (en) * | 1984-03-14 | 1986-06-24 | Computer Security Systems, Inc. | Method and apparatus for protecting stored and transmitted data from compromise or interception |
SE447859B (sv) * | 1984-12-10 | 1986-12-15 | Datakonsult I Malmo Ab | Krypteringsanordning samt dekrypteringsanordning |
US4724541A (en) * | 1985-07-24 | 1988-02-09 | Mallick Brian C | Data-dependent binary encoder/decoder |
DE3687235T2 (de) * | 1986-06-09 | 1993-08-12 | Securicrypto Ab | Einrichtung zur verschluesselung und zur entschluesselung. |
AU601370B2 (en) * | 1986-06-09 | 1990-09-13 | Datakonsult I Malmo Ab | Ciphering and deciphering device |
FR2601535B1 (fr) * | 1986-07-11 | 1988-10-21 | Bull Cp8 | Procede pour certifier l'authenticite d'une donnee echangee entre deux dispositifs connectes en local ou a distance par une ligne de transmission |
US4703503A (en) * | 1986-10-03 | 1987-10-27 | Hitohisa Asai | Cryptographic system using pseudocomplements of vector Boolean algebra |
FR2606232B1 (fr) * | 1986-10-31 | 1988-12-02 | Neiman Sa | Procede de codage evolutif de haute securite et dispositif de mise en oeuvre de ce procede |
US5123047A (en) * | 1988-12-09 | 1992-06-16 | The Exchange System Limited Partnership | Method of updating encryption device monitor code in a multichannel data encryption system |
US4997288A (en) * | 1988-12-09 | 1991-03-05 | The Exchange System Limited Partnership | Power supply arrangement for fault-tolerant operation in a microcomputer-based encryption system |
US5128996A (en) * | 1988-12-09 | 1992-07-07 | The Exchange System Limited Partnership | Multichannel data encryption device |
US4930139A (en) * | 1989-05-31 | 1990-05-29 | O'neill Communications, Inc. | Spread spectrum communication system |
US5454039A (en) * | 1993-12-06 | 1995-09-26 | International Business Machines Corporation | Software-efficient pseudorandom function and the use thereof for encryption |
US5778074A (en) * | 1995-06-29 | 1998-07-07 | Teledyne Industries, Inc. | Methods for generating variable S-boxes from arbitrary keys of arbitrary length including methods which allow rapid key changes |
AU2001271763A1 (en) * | 2000-06-30 | 2002-01-14 | Zinio Systems, Inc. | System and method for encrypting, distributing and viewing electronic documents |
JP4787434B2 (ja) * | 2001-08-24 | 2011-10-05 | 富士通コンポーネント株式会社 | 暗号化方法、通信システム、データ入力装置 |
US7764792B1 (en) * | 2005-01-13 | 2010-07-27 | Marvell International Ltd. | System and method for encoding data transmitted on a bus |
WO2008029406A2 (en) * | 2006-09-07 | 2008-03-13 | Fortress Gb Ltd. | A system and method to preclude message modification in data authentication systems through efficient use of feedback in cryptographic functions |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1393920A (en) * | 1972-12-12 | 1975-05-14 | Ibm | Electric digital data processing systems |
SE380696B (sv) * | 1974-03-20 | 1975-11-10 | Philips Svenska Ab | Sett att alstra en pseudoslumpbitfoljd och anordning for utforande av settet. |
DE2639806C2 (de) * | 1976-09-03 | 1978-06-22 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren und Einrichtung zum Verschlüsseln oder Entschlüsseln von Datenblöcken in binärer Darstellung |
US4133974A (en) * | 1976-11-05 | 1979-01-09 | Datotek, Inc. | System for locally enciphering prime data |
FR2448824A1 (fr) * | 1979-02-06 | 1980-09-05 | Telediffusion Fse | Systeme de videotex muni de moyens de controle d'acces a l'information |
FR2448825A1 (fr) * | 1979-02-06 | 1980-09-05 | Telediffusion Fse | Systeme de transmission d'information entre un centre d'emission et des postes recepteurs, ce systeme etant muni d'un moyen de controle de l'acces a l'information transmise |
-
1979
- 1979-10-10 FR FR7925256A patent/FR2467515A1/fr active Granted
-
1980
- 1980-10-10 EP EP80401460A patent/EP0027423B1/de not_active Expired
- 1980-10-10 WO PCT/FR1980/000149 patent/WO1984004438A1/fr unknown
- 1980-10-10 US US06/241,068 patent/US4431865A/en not_active Expired - Fee Related
- 1980-10-10 DE DE8080401460T patent/DE3065543D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0027423A1 (de) | 1981-04-22 |
US4431865A (en) | 1984-02-14 |
WO1984004438A1 (fr) | 1984-11-08 |
FR2467515B1 (de) | 1984-04-13 |
FR2467515A1 (fr) | 1981-04-17 |
EP0027423B1 (de) | 1983-11-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3070681D1 (en) | Enciphering and deciphering system | |
DE3065543D1 (en) | Digital-signal ciphering and deciphering arrangement | |
GB2041178B (en) | Protective screen | |
GB2123194B (en) | Security apparatus | |
GB2058813B (en) | Pigment compositions and use thereof | |
GB2053210B (en) | Substituted 3-arylpyrazoles and 5-arylisoxazoles | |
DE3065011D1 (en) | Apparatus for enciphering and/or deciphering data signals | |
YU82683A (en) | Rptary plough for holding and eaqualizing the inversion | |
DE3069260D1 (en) | N-azidosulfonylaryl maleimides and their use | |
GB2065694B (en) | Basic dyes and the like | |
JPS56124651A (en) | Lockerrhousing and lockerrcover | |
JPS5640680A (en) | 33methyleneflavanone and 33methylenechromanone and their use | |
JPS55154994A (en) | Amtibiotic aa6888c and aa6888x | |
JPS55159396A (en) | First and second devices mutually lockable | |
GB2042846B (en) | Secret television | |
GB2048250B (en) | 2-amino-6-aryl-4-pyrimidinols and their pharmaceutical uses | |
SG7084G (en) | Combined rinser and spindrier | |
JPS56103118A (en) | Radioactivity assey and useful composition therefor | |
JPS55124782A (en) | 22azaergolines and 22azaa8*or 9**ergolenes | |
JPS5691272A (en) | Cryptographic technique | |
GB2038618B (en) | Water-driventoothbrush and water-pick assembly | |
JPS5599691A (en) | Shoplift and burglar preventing device | |
JPS579777A (en) | 1-epi-2-deoxyfortimicin b and derivative | |
JPS5642712A (en) | Anchor and anchor unit | |
JPS5683452A (en) | Colorrstable halogenated aromatic amine and its synthesis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |