Process for the control of the use of a data processing work sta

Details Process for the control of the use of a data processing work sta Process for the control of the use of a data processing work sta

1991-12-23

1993-06-22

Cain, David

Cryptography

Cryptanalysis

380 25, H04L 900

Patent

active

052221350

ABSTRACT:
Method for controlling the use of a data-processing workstation (1) by password, comprising storage of the password within the workstation and, at each initialization of this latter, acquisition of a password proposition followed by a comparison of this proposition with the stored password. The password is stored in a controlled-erasure permanent memory unit. In order to release the workstation (1) in the event of loss of the password, provision is made for generation (D1) of a set (36) of data associated with the blocked workstation, communication (D2) of part of these data by the user to an authorized service (S), supply (D3) in return by this service of coded release data (43), acquisition (D4) of these latter by the user on the workstation, thereby resulting, in the event of compliance, in erasure of the initial password and in release of the workstation. Application in an industrial environment to control of the use of offline or network workstations.

REFERENCES:
patent: 4959860 (1990-09-01), Watters et al.
patent: 5022077 (1991-06-01), Bealkowski et al.
patent: 5060263 (1991-10-01), Bosen et al.
patent: 5097506 (1992-03-01), Kaiser, Jr. et al.
patent: 5144659 (1992-09-01), Jones
"Method of Protecting Data on a Personal Computer", IBM Technical Disclosure Bulletin, vol. 28, No. 6, Nov. 1985, p. 2530.

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