Secure data processing system architecture

Details Secure data processing system architecture Secure data processing system architecture

G - Physics

06

F

354/243, 340/70

G06F 12/14 (2006.01) G06F 1/00 (2006.01) G06F 21/00 (2006.01)

Patent

CA 1227885

ABSTRACT A data processing system having an architecture for protecting selected system files. The data processing unit includes a secure processing unit operating in a manner independent of the operation of the remainder of the data processing unit for storing and comparing system file attributes and user entity attri- butes. The comparison of attributes is performed in accordance with a table in the secure processing unit containing the security context. The secure processing unit alone is able to manipulate special data groups called distinguished data objects. The secure processing unit also manipulates a data object identifier that iso- lates the identification of the system files from the actual memory storage locations. Apparatus and method are also disclosed for providing secure creation of pro- tected system files by in part eliminates interruption, the data processing system in the process. The architec- ture also facilitates secure transfer of files between data processing systems.

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