EP 1032879 A1 20000906 - METHOD AND APPARATUS FOR CONTROLLING ACCESS TO CONFIDENTIAL DATA
Title (en)
METHOD AND APPARATUS FOR CONTROLLING ACCESS TO CONFIDENTIAL DATA
Title (de)
VERFAHREN UND GERÄT, UM ZUGANG ZU VERTRAULICHEN DATEN ZU KONTROLLIEREN
Title (fr)
PROCEDE ET APPAREIL POUR CONTROLER L'ACCES A DES DONNEES CONFIDENTIELLES
Publication
Application
Priority
US 9820122 W 19980925
Abstract (en)
[origin: WO0019322A1] A method and apparatus for controlling access to confidential data are disclosed. The disclosed apparatus includes a non-volatile memory for storing data and a logic circuit for controlling access to the data contained in the memory. The logic circuit selectively accesses the memory to determine whether at least a portion of the data contained in the memory comprises confidential data by analyzing a property inherent in the accessed data. The disclosed method includes the steps of: defining a predetermined section of the programmable memory as a repository for confidential data; addressing the predetermined section of the programmable memory; calculating a number of data blocks in the predetermined section having a predetermined characteristic; comparing the calculated number to a threshold value; and defining the memory as including confidential data in the predetermined section if the calculated number has a predetermined relationship to the threshold value.
IPC 1-7
IPC 8 full level
G06F 1/00 (2006.01); G06F 21/00 (2006.01); G06F 21/62 (2013.01); G06F 21/79 (2013.01)
CPC (source: EP)
G06F 21/62 (2013.01); G06F 21/79 (2013.01); G06F 2211/007 (2013.01)
Citation (search report)
See references of WO 0019322A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0019322 A1 20000406; AU 750573 B2 20020725; AU 9582298 A 20000417; CA 2311392 A1 20000406; CA 2311392 C 20040511; EP 1032879 A1 20000906
DOCDB simple family (application)
US 9820122 W 19980925; AU 9582298 A 19980925; CA 2311392 A 19980925; EP 98949515 A 19980925