ENCRYPTION STORAGE DEVICE, INFORMATION APPARATUS AND SECURITY METHOD FOR ENCRYPTION STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an encryption storage device capable of invalidating data for each area, executing data invalidation with enhanced operability when a hardware encryption storage device stores a plurality of types of information, and effectively utilizing resources stored in the aforementioned storage device.;SOLUTION: An encryption storage device is provided with: means for, when a data invalidation command of a specific partition associated with a partition key as an encryption key or an invalidation command of a specific partition key is issued from a host, deleting the partition key associated with the specific partition or the specific partition key; and a means for, when a data invalidation command of a specific partition unassociated with a partition key as an encryption key or an invalidation command of a default key is issued from the host, deleting the default key.;COPYRIGHT: (C)2012,JPO&INPIT