GB1542350A - Coding and decoding of data blocks - Google Patents

Coding and decoding of data blocks

Info

Publication number
GB1542350A
GB1542350A GB3643877A GB3643877A GB1542350A GB 1542350 A GB1542350 A GB 1542350A GB 3643877 A GB3643877 A GB 3643877A GB 3643877 A GB3643877 A GB 3643877A GB 1542350 A GB1542350 A GB 1542350A
Authority
GB
United Kingdom
Prior art keywords
code
groups
decoding
coding
group
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
GB3643877A
Other languages
English (en)
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
Publication of GB1542350A publication Critical patent/GB1542350A/en
Expired legal-status Critical Current

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
    • H04L9/06—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
    • H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Image Processing (AREA)
  • Facsimile Transmission Control (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
GB3643877A 1976-09-03 1977-09-01 Coding and decoding of data blocks Expired GB1542350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762639806 DE2639806C2 (de) 1976-09-03 1976-09-03 Verfahren und Einrichtung zum Verschlüsseln oder Entschlüsseln von Datenblöcken in binärer Darstellung

Publications (1)

Publication Number Publication Date
GB1542350A true GB1542350A (en) 1979-03-14

Family

ID=5987117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3643877A Expired GB1542350A (en) 1976-09-03 1977-09-01 Coding and decoding of data blocks

Country Status (8)

Country Link
AT (1) AT372559B (de)
BE (1) BE858377A (de)
CH (1) CH618803A5 (de)
DE (1) DE2639806C2 (de)
FR (1) FR2363831A1 (de)
GB (1) GB1542350A (de)
IT (1) IT1087364B (de)
NL (1) NL7709716A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431865A (en) * 1979-10-10 1984-02-14 Telediffusion De France Digital signal enciphering and deciphering apparatus and system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL188925C (nl) * 1982-11-11 1992-11-02 Philips Nv Werkwijze en inrichting voor het weergeefbaar maken van vercijferde informatie.
DE4114777A1 (de) * 1990-05-22 1992-02-06 Peter Elsner Verfahren und einrichtung zur nachrichtenumschluesselung
CN118094608B (zh) * 2024-04-29 2024-08-30 山东水文印务有限公司 水文数据管理方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796830A (en) * 1971-11-02 1974-03-12 Ibm Recirculating block cipher cryptographic system
SE380696B (sv) * 1974-03-20 1975-11-10 Philips Svenska Ab Sett att alstra en pseudoslumpbitfoljd och anordning for utforande av settet.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431865A (en) * 1979-10-10 1984-02-14 Telediffusion De France Digital signal enciphering and deciphering apparatus and system

Also Published As

Publication number Publication date
ATA616777A (de) 1983-02-15
AT372559B (de) 1983-10-25
FR2363831B1 (de) 1982-12-10
NL7709716A (nl) 1978-03-07
CH618803A5 (en) 1980-08-15
DE2639806B1 (de) 1977-10-13
IT1087364B (it) 1985-06-04
FR2363831A1 (fr) 1978-03-31
BE858377A (fr) 1978-03-02
DE2639806C2 (de) 1978-06-22

Similar Documents

Publication Publication Date Title
US5008935A (en) Efficient method for encrypting superblocks of data
EP0342832B1 (de) Dynamische Rückkopplungsvorrichtung für einen Verschleierungsschlüsselgenerator
WO1996015604B1 (en) Message protection system and method
GB1315060A (en) Data processor
GB1439163A (en) Verification system
MY108517A (en) Increasing options in mapping rom in computer memory space
GR3030107T3 (en) Lzw data compression using an associative memory
DE3473365D1 (en) Single error correction circuit for system memory
HUT73896A (en) An encryption method for providing data security
GB1489624A (en) Method and apparatus for generating character patterns
GB1542350A (en) Coding and decoding of data blocks
IT1120598B (it) Sistema di codificazione di caratteri ideografici
KR850002716A (ko) 펄스 부호 변조형 번역기
GB1393920A (en) Electric digital data processing systems
JPH01500794A (ja) データ暗号方式
GB1011343A (en) Improvements in or relating to devices for the permanent storage of binary data
KR910003958A (ko) 복호장치
ATE215759T1 (de) Vorrichtung zur kodierung und dekodierung mit einem in seiten organisierten speicher (paged memory)
EP0112056A3 (de) Videofarbanzeigeeinrichtung mit Komprimierung und Entkomprimierung der Daten
JPS5917750A (ja) 暗号システム
Ramesh et al. An indirect encryption using compression with random bit stuffing
Stahl On computational security.
JPS55115137A (en) Format control system
Karlof et al. Odd group codes for the Gaussian channel
JPS6273331A (ja) １対１対応乱数表の作成方式

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee