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WO1991018459A3 - Dispositif de conversion de blocs numeriques et son utilisation - Google Patents

Dispositif de conversion de blocs numeriques et son utilisation Download PDF

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Publication number
WO1991018459A3
WO1991018459A3 PCT/CH1991/000117 CH9100117W WO9118459A3 WO 1991018459 A3 WO1991018459 A3 WO 1991018459A3 CH 9100117 W CH9100117 W CH 9100117W WO 9118459 A3 WO9118459 A3 WO 9118459A3
Authority
WO
WIPO (PCT)
Prior art keywords
coding
inputs
partial blocks
text
partial
Prior art date
Application number
PCT/CH1991/000117
Other languages
German (de)
English (en)
Other versions
WO1991018459A2 (fr
Inventor
James Lee Massey
Xuejia Lai
Original Assignee
Ascom Tech 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4216333&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1991018459(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ascom Tech Ag filed Critical Ascom Tech Ag
Priority to DE59100171T priority Critical patent/DE59100171C5/de
Priority to AT91908542T priority patent/ATE91208T1/de
Publication of WO1991018459A2 publication Critical patent/WO1991018459A2/fr
Publication of WO1991018459A3 publication Critical patent/WO1991018459A3/fr

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
    • H04L9/0625—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI
    • 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
    • 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
    • H04L2209/24—Key scheduling, i.e. generating round keys or sub-keys for block encryption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un dispositif (12) comprend neuf étages de codage (61.1, 61.2, 69) dont les huit premiers sont identiques. Le dispositif comprend en outre une unité (63) génératrice de blocs partiels de codage, une unité d'entrée (21) et une unité de sortie (79). Ce dispositif sert à coder bloc par bloc un texte en clair (X) qui provient d'une source (11) d'informations, de façon à le convertir en un texte codé (Y) à transmettre par une ligne de transmission (13), un bloc de codage secret (Z) étant introduit au préalable par un canal sûr (17). Quatre blocs partiels (X1 - X4; W11 - W14; W21 - W24; W81 - W84; Y1 - Y4) sont codés graduellement et parallèlement. A cet effet, chaque étage de codage (61.1, 61.2, 49) comprend quatre premières entrées (25 - 28; 35 - 38), six ou quatre deuxièmes entrées (29, 30, 32, 33, 49, 52; 129, 130, 132, 133) et quatre sorties (75 - 78). En tout 52 blocs partiels de codage (Z1 - Z52) formés à partir du bloc de codage (Z) sont appliqués aux deuxièmes entrées. Le dispositif (12) peut également servir sans modifications pour décoder un texte codé arrivant (Y). Il suffit dans ce cas d'appliquer d'autres blocs partiels de codage aux deuxièmes entrées.
PCT/CH1991/000117 1990-05-18 1991-05-16 Dispositif de conversion de blocs numeriques et son utilisation WO1991018459A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59100171T DE59100171C5 (de) 1990-05-18 1991-05-16 Vorrichtung für das umwandeln eines digitalblockes und verwendung derselben.
AT91908542T ATE91208T1 (de) 1990-05-18 1991-05-16 Vorrichtung fuer das umwandeln eines digitalblockes und verwendung derselben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH169090 1990-05-18
CH1690/90-8 1990-05-18

Publications (2)

Publication Number Publication Date
WO1991018459A2 WO1991018459A2 (fr) 1991-11-28
WO1991018459A3 true WO1991018459A3 (fr) 1992-03-05

Family

ID=4216333

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1991/000117 WO1991018459A2 (fr) 1990-05-18 1991-05-16 Dispositif de conversion de blocs numeriques et son utilisation

Country Status (6)

Country Link
US (1) US5214703A (fr)
EP (1) EP0482154B1 (fr)
JP (1) JP3225440B2 (fr)
ES (1) ES2042346T3 (fr)
HK (1) HK1003338A1 (fr)
WO (1) WO1991018459A2 (fr)

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Also Published As

Publication number Publication date
JP3225440B2 (ja) 2001-11-05
EP0482154B1 (fr) 1993-06-30
US5214703A (en) 1993-05-25
EP0482154A1 (fr) 1992-04-29
JPH05500121A (ja) 1993-01-14
ES2042346T3 (es) 1993-12-01
WO1991018459A2 (fr) 1991-11-28
HK1003338A1 (en) 1998-10-23

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