FR2446568A1 - Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs - Google Patents

Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs

Info

Publication number
FR2446568A1
FR2446568A1 FR7631865A FR7631865A FR2446568A1 FR 2446568 A1 FR2446568 A1 FR 2446568A1 FR 7631865 A FR7631865 A FR 7631865A FR 7631865 A FR7631865 A FR 7631865A FR 2446568 A1 FR2446568 A1 FR 2446568A1
Authority
FR
France
Prior art keywords
memory
peripheral unit
decoding
unit
modulator
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
FR7631865A
Other languages
English (en)
Other versions
FR2446568B1 (fr
Inventor
Gerard Christmann
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7631865A priority Critical patent/FR2446568A1/fr
Publication of FR2446568A1 publication Critical patent/FR2446568A1/fr
Application granted granted Critical
Publication of FR2446568B1 publication Critical patent/FR2446568B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82—Protecting input, output or interconnection devices
    • G06F21/85—Protecting input, output or interconnection devices interconnection devices, e.g. bus-connected or in-line devices
    • 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
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Databases & Information Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Bioethics (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)

Abstract

Dispositif assurant la protection des fichiers secrets d'un ordinateur. Un dispositif 7 de chiffrement automatique, dans le sens mémoire centrale 1 vers un périphérique 10 comportant un fichier secret, et de déchiffrement, dans le sens périphérique 10 vers mémoire centrale, est inséré sur la voie de transmission entre cette mémoire centrale et le périphérique. Ce dispositif 7 est par exemple inséré entre le coupleur 6 et le périphérique. Application aux ordinateurs.
FR7631865A 1976-10-22 1976-10-22 Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs Granted FR2446568A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7631865A FR2446568A1 (fr) 1976-10-22 1976-10-22 Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7631865A FR2446568A1 (fr) 1976-10-22 1976-10-22 Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs

Publications (2)

Publication Number Publication Date
FR2446568A1 true FR2446568A1 (fr) 1980-08-08
FR2446568B1 FR2446568B1 (fr) 1983-11-04

Family

ID=9179097

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7631865A Granted FR2446568A1 (fr) 1976-10-22 1976-10-22 Perfectionnement aux dispositifs de constitution et d'utilisation des fichiers chiffres des ordinateurs

Country Status (1)

Country Link
FR (1) FR2446568A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382680A1 (fr) * 1989-02-08 1990-08-16 Gretag Data Systems AG Procédé de traitement cryptographique de données et système cryptographique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524208A (fr) * 1967-03-13 1968-05-10 Ibm France Dispositif de cryptage digital sans synchronisation
FR2210307A5 (fr) * 1972-12-12 1974-07-05 Ibm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1524208A (fr) * 1967-03-13 1968-05-10 Ibm France Dispositif de cryptage digital sans synchronisation
FR2210307A5 (fr) * 1972-12-12 1974-07-05 Ibm

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/75 *
EXBK/76 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0382680A1 (fr) * 1989-02-08 1990-08-16 Gretag Data Systems AG Procédé de traitement cryptographique de données et système cryptographique
US5020106A (en) * 1989-02-08 1991-05-28 Gretag Aktiengesellschaft Process for the cryptographic processing of data and cryptographic systems

Also Published As

Publication number Publication date
FR2446568B1 (fr) 1983-11-04

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ST Notification of lapse