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1. WO2000042490 - SYSTEM FOR DATA PROCESSING A SECURITY CRITICAL ACTIVITY

Publication Number WO/2000/042490
Publication Date 20.07.2000
International Application No. PCT/SE2000/000027
International Filing Date 10.01.2000
Chapter 2 Demand Filed 24.07.2000
IPC
G06F 12/14 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
14Protection against unauthorised use of memory
G06F 21/78 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
78to assure secure storage of data
G06F 21/82 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
82Protecting input, output or interconnection devices
CPC
G06F 21/78
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
78to assure secure storage of data
G06F 21/82
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
82Protecting input, output or interconnection devices
G06F 2221/2105
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2221Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
21Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
2105Dual mode as a secondary aspect
Applicants
  • MYSPACE AB [SE/SE]; Sveavägen 33 S-113 34 Stockholm, SE (AllExceptUS)
  • WETTERGREN, Christian [SE/SE]; SE (UsOnly)
Inventors
  • WETTERGREN, Christian; SE
Agents
  • DR LUDWIG BRANN PATENTBYRÅ AB; P.O. Box 17192 S-104 62 Stockholm, SE
Priority Data
60/115,48811.01.1999US
9900051-511.01.1999SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM FOR DATA PROCESSING A SECURITY CRITICAL ACTIVITY
(FR) SYSTEME PERMETTANT DE TRAITER EN MODE INFORMATIQUE UNE ACTIVITE CRITIQUE EN MATIERE DE SECURITE
Abstract
(EN)
The present invention relates to a system for data processing a security critical activity in a secure management mode in a computer, which computer comprises a processor (10), handling devices (20, 28-38), memory storage means (14, 42), hereafter named resources; that the system comprises a security device (50) comprising a processor (52) and signal generators (SGPM, SGA), a number of control means, hereafter named switches (60), with signal receivers (SRA, SRPM) arranged respectively between the security device and the pre-selected resources, that the switches contain information regarding accessibility to and from the resources, or parts of the resources, hereafter named resource ranges, wherein the switch controls requests from the computer processor to the resources or resource ranges depending on the information contained in the switch, and wherein, in response to a call from the computer processor or the handling devices, the switches are activated by receiving a signal (SGPM) from the security device, enabling the security device access to and from the resources or resource ranges selected by the security device, and denying the computer processor access to and from the resources or resource ranges selected by the security device.
(FR)
La présente invention concerne un système permettant de traiter en mode informatique une activité critique en matière de sécurité dans un mode de gestion sécurisé dans un ordinateur, lequel ordinateur comprend un processeur (10), des dispositifs de manipulation (20, 28-38), des organes de stockage en mémoire (14, 42), ci-après dénommés ressources. Le système comprend un dispositif de sécurité (50) comprenant un processeur (52) et des générateurs de signaux (SGPM, SGA), un certain nombre d'organes de commande, ci-après dénommés commutateurs (60), des récepteurs de signaux (SRA, SRPM) étant agencés respectivement entre le dispositif de sécurité et les ressources présélectionnées. Les commutateurs contiennent des informations concernant l'accessibilité aux ressources et par les ressources ou des parties de ressources, ci-après dénommées plages. En l'occurrence, le commutateur commande les demandes en provenance du processeur de l'ordinateur et adressées aux ressources ou aux plages de ressources en fonction de l'information contenue dans le commutateur. En outre, en réaction à un appel en provenance du processeur d'ordinateur ou des dispositifs de manipulation, les commutateurs sont activés par réception d'un signal (SGPM) provenant du dispositif de sécurité, ce qui autorise le dispositif de sécurité de faire ou de subir des accès avec les ressources ou les plages de ressources sélectionnées par le dispositif de sécurité, refusant ainsi au processeur de l'ordinateur de faire ou de subir des accès avec les ressources ou les plages de ressources sélectionnées par le dispositif de sécurité.
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