ES2023100T3 - Unidad de teclado de seguridad, en particular para la composicion de un codigo confidencial. - Google Patents

Unidad de teclado de seguridad, en particular para la composicion de un codigo confidencial.

Info

Publication number
ES2023100T3
ES2023100T3 ES198787401188T ES87401188T ES2023100T3 ES 2023100 T3 ES2023100 T3 ES 2023100T3 ES 198787401188 T ES198787401188 T ES 198787401188T ES 87401188 T ES87401188 T ES 87401188T ES 2023100 T3 ES2023100 T3 ES 2023100T3
Authority
ES
Spain
Prior art keywords
interrogation
lines
columns
impulse
applies
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 - Lifetime
Application number
ES198787401188T
Other languages
English (en)
Other versions
ES2023100A4 (es
Inventor
Joel Soupirot
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
Electronique Serge Dassault 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 Electronique Serge Dassault SA filed Critical Electronique Serge Dassault SA
Publication of ES2023100A4 publication Critical patent/ES2023100A4/es
Application granted granted Critical
Publication of ES2023100T3 publication Critical patent/ES2023100T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
    • G06F21/75—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by inhibiting the analysis of circuitry or operation
    • 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
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • 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
    • G06F21/81—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
    • 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
    • G06F21/83—Protecting input, output or interconnection devices input devices, e.g. keyboards, mice or controllers thereof

Abstract

UN TECLADO DE 16 TECLAS ES ANALIZADO DE FORMA MATRICIAL, MEDIANTE CUATRO LINEAS (A,B,C,D) Y CUATRO COLUMNAS (1,2,3,4). UNOS IMPULSOS DE INTERROGACION SON APLICADOS SECUENCIAL Y CICLICAMENTE A LAS CUATRO LINEAS (A,B,C,D). EN ESTADO DE EXPLORACION DEL TECLADO, UN MICROPROCESADNR APLICA ASIMISMO EL IMPULSO DE INTERROGACION A TODAS LAS COLUMNAS EXCEPTO A UNA. EN CASO DE QUE NO SE PRODUZCA TRANSFERENCIA DEL IMPULSO DE INTERROGACION HACIA LA COLUMNA CONCERNIENTE, APLICA INMEDIATEMENTE A LA MISMA UN IMPULSO FICTICIO QUE ACABA CON EL IMPULSO DE INTERROGACION. CADA CIERTO TIEMPO, EN ESTADO DE SIMULACION PURA, EL MICROPROCESDOR APLICA IGUALMENTE EL IMPULSO DE INTERROGACION A UNA DE LAS LINEAS Y A TODAS LAS COLUMNAS DEL TECLADO. LAS SEÑALES ASI OBTENIDAS EN LAS LINEAS Y COLUMNAS SON ENTONCES INDISCERNIBLES DE LAS QUE CORRESPONDEN A UN VERDADERO ACCIONAMIENTO DE UNA TECLA.
ES198787401188T 1986-06-02 1987-05-26 Unidad de teclado de seguridad, en particular para la composicion de un codigo confidencial. Expired - Lifetime ES2023100T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8607901A FR2599525B1 (fr) 1986-06-02 1986-06-02 Unite a clavier de securite, en particulier pour la composition d'un code confidentiel

Publications (2)

Publication Number Publication Date
ES2023100A4 ES2023100A4 (es) 1992-01-01
ES2023100T3 true ES2023100T3 (es) 1992-06-01

Family

ID=9335891

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787401188T Expired - Lifetime ES2023100T3 (es) 1986-06-02 1987-05-26 Unidad de teclado de seguridad, en particular para la composicion de un codigo confidencial.

Country Status (5)

Country Link
EP (1) EP0248712B1 (es)
DE (1) DE3774000D1 (es)
ES (1) ES2023100T3 (es)
FR (1) FR2599525B1 (es)
NO (1) NO872257L (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8826340D0 (en) * 1988-11-10 1988-12-14 Ncr Co Data entry keyboard apparatus
JP2733300B2 (ja) * 1989-04-28 1998-03-30 松下電器産業株式会社 キー入力装置
DE59107381D1 (de) * 1990-09-17 1996-03-21 Siemens Nixdorf Inf Syst Verfahren zur Verschleierung einer Eingabe bei einem Tastatureingabegerät für sicherheitsrelevante Daten
FR2692378B1 (fr) * 1992-06-12 1994-07-29 Dassault Automatismes Telecomm Unite a clavier de securite perfectionnee.
FR2723806A1 (fr) * 1994-08-17 1996-02-23 Schlumberger Ind Sa Dispositif de clavier securise
US5832206A (en) * 1996-03-25 1998-11-03 Schlumberger Technologies, Inc. Apparatus and method to provide security for a keypad processor of a transaction terminal
US7305565B1 (en) * 2000-05-31 2007-12-04 Symbol Technologies, Inc. Secure, encrypting pin pad
JP4763163B2 (ja) * 2001-06-27 2011-08-31 富士通フロンテック株式会社 取引端末装置
US7392396B2 (en) 2002-03-07 2008-06-24 Symbol Technologies, Inc. Transaction device with noise signal encryption
FR2982054B1 (fr) * 2011-10-28 2014-06-20 Ingenico Sa Procede et dispositif de gestion d'une matrice de touches, produit programme d'ordinateur et moyen de stockage correspondants.
FR2982392B1 (fr) * 2011-11-04 2013-12-20 Ingenico Sa Procede et dispositif de gestion d'une matrice de touches, avec protection contre un dispositif espion actif, produit programme d'ordinateur et moyen de stockage correspondants.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973256A (en) * 1975-07-14 1976-08-03 Compucorp Key detection system interconnecting keyboard and data processing system
US4145687A (en) * 1975-09-30 1979-03-20 Denki Onkyo Co., Ltd. Keyboard switch circuit for use in a matrix which has a series circuit including a reluctance element and a diode connected between each row and column of the matrix
FR2401459A1 (fr) * 1977-08-26 1979-03-23 Cii Honeywell Bull Support d'information portatif muni d'un microprocesseur et d'une memoire morte programmable
NL8201847A (nl) * 1982-05-06 1983-12-01 Philips Nv Inrichting voor het beschermen tegen onbevoegd uitlezen van in een geheugen te memoriseren programmawoorden.
GB8320294D0 (en) * 1983-07-27 1983-09-01 Panorama Office Systems Ltd Keyboard input devices

Also Published As

Publication number Publication date
NO872257D0 (no) 1987-05-29
EP0248712B1 (fr) 1991-10-23
FR2599525A1 (fr) 1987-12-04
NO872257L (no) 1987-12-03
DE3774000D1 (de) 1991-11-28
FR2599525B1 (fr) 1988-07-29
ES2023100A4 (es) 1992-01-01
EP0248712A1 (fr) 1987-12-09

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