FR2363831A1 - METHOD AND DEVICE FOR ENCODING OR DECODING BLOCKS OF DATA IN A REPRESENTATION IN BINARY FORM - Google Patents

METHOD AND DEVICE FOR ENCODING OR DECODING BLOCKS OF DATA IN A REPRESENTATION IN BINARY FORM

Info

Publication number
FR2363831A1
FR2363831A1 FR7725568A FR7725568A FR2363831A1 FR 2363831 A1 FR2363831 A1 FR 2363831A1 FR 7725568 A FR7725568 A FR 7725568A FR 7725568 A FR7725568 A FR 7725568A FR 2363831 A1 FR2363831 A1 FR 2363831A1
Authority
FR
France
Prior art keywords
data
encoding
representation
binary form
bits
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
FR7725568A
Other languages
French (fr)
Other versions
FR2363831B1 (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 FR2363831A1 publication Critical patent/FR2363831A1/en
Application granted granted Critical
Publication of FR2363831B1 publication Critical patent/FR2363831B1/fr
Granted 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)
  • Facsimile Transmission Control (AREA)
  • Image Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour coder ou décoder des blocs de données suivant une représentation sous forme binaire. Dans un dispositif comportant un registre à décalage de données DSR relié à un multiplexeur MUX1 raccordé à des compteurs DZ, ZZ, et à un multiplexeur MUX2 raccordé à une mémoire de code SP ainsi qu'un registre de sortie de données DAR, chaque groupe de bits d'un bloc de données est subdivisé en n groupes de bits de chacun 2 caractères et forme une adresse pour un groupe de code de la mémoire SP, et des transformations alternées, linéaires et non linéaires, se répètent de façon alternée suivant 2n cycles avec codage du bloc de données. Application notamment aux installations de télé-traitement des données.The invention relates to a method and a device for encoding or decoding data blocks according to a representation in binary form. In a device comprising a DSR data shift register connected to a multiplexer MUX1 connected to counters DZ, ZZ, and to a multiplexer MUX2 connected to a code memory SP as well as a data output register DAR, each group of bits of a data block is subdivided into n groups of bits of each 2 characters and forms an address for a code group of the SP memory, and alternating linear and non-linear transformations are repeated alternately in 2n cycles with data block coding. Application in particular to remote data processing installations.

FR7725568A 1976-09-03 1977-08-22 METHOD AND DEVICE FOR ENCODING OR DECODING BLOCKS OF DATA IN A REPRESENTATION IN BINARY FORM Granted FR2363831A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762639806 DE2639806C2 (en) 1976-09-03 1976-09-03 Method and device for encrypting or decrypting data blocks in binary representation

Publications (2)

Publication Number Publication Date
FR2363831A1 true FR2363831A1 (en) 1978-03-31
FR2363831B1 FR2363831B1 (en) 1982-12-10

Family

ID=5987117

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725568A Granted FR2363831A1 (en) 1976-09-03 1977-08-22 METHOD AND DEVICE FOR ENCODING OR DECODING BLOCKS OF DATA IN A REPRESENTATION IN BINARY FORM

Country Status (8)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467515A1 (en) * 1979-10-10 1981-04-17 Telediffusion Fse SYSTEM FOR ENCRYPTING AND DECRYPTING A DIGITAL SIGNAL
NL188925C (en) * 1982-11-11 1992-11-02 Philips Nv METHOD AND APPARATUS FOR DISPLAYING FIGURED INFORMATION
DE4114777A1 (en) * 1990-05-22 1992-02-06 Peter Elsner METHOD AND DEVICE FOR ENCRYPTING NEWS
CN118094608A (en) * 2024-04-29 2024-05-28 山东水文印务有限公司 Hydrologic data management method

Citations (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
USB559737I5 (en) * 1974-03-20 1976-01-20

Patent Citations (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
USB559737I5 (en) * 1974-03-20 1976-01-20

Also Published As

Publication number Publication date
AT372559B (en) 1983-10-25
DE2639806C2 (en) 1978-06-22
GB1542350A (en) 1979-03-14
CH618803A5 (en) 1980-08-15
IT1087364B (en) 1985-06-04
BE858377A (en) 1978-03-02
DE2639806B1 (en) 1977-10-13
FR2363831B1 (en) 1982-12-10
NL7709716A (en) 1978-03-07
ATA616777A (en) 1983-02-15

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Legal Events

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ST Notification of lapse