Data processing security system for automatically transferring s

Details Data processing security system for automatically transferring s Data processing security system for automatically transferring s

1984-11-15

1990-08-07

Williams, Jr., Archie E.

Boots, shoes, and leggings

3642362, 3642462, 3642463, 3642472, 3642481, 3642466, 3642467, 3642469, 36426081, 3642864, 380 4, 380 25, G06F 1214, G06F 906, G06F 1312

Patent

active

049473182

ABSTRACT:
In a computer system in which a storage unit is accessed by a host computer, protection key information for each of a plurality of areas of a storage volume, is stored into the storage volume mounted in the storage unit. When the storage volume is mounted on the storage unit, the storage unit reads out protection key information stored in the storage volume and stores it into a memory provided in the storage unit. When an access request for one of the plurality of areas of the storage volume is received from the host computer, the access request is collated with the protection key information stored in the memory relating to the requested area, and the access request is permitted or inhibited in accordance with the collating result.

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