Browse Prior Art Database

Data Security Method for Storage Device

IP.com Disclosure Number: IPCOM000115424D
Original Publication Date: 1995-May-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Fujihara, S: AUTHOR [+2]

Abstract

The Data Security Method for Storage Device is to protect data on the storage device at the access conversion between a host address and the storage cell address.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Data Security Method for Storage Device

      The Data Security Method for Storage Device is to protect data
on the storage device at the access conversion between a host address
and the storage cell address.

      At the access to the data on the storage device, a host
controller specifies the address to the storage device, such as
Sector Number or Logical Block Number.  The storage device decodes
the address to a physical address on the storage cell; Cell Address.

      The Figure shows a block diagram of the Data Security Method
for Storage Device.  The Data Security Method for Storage Device
allows the Address Decoder to have multiple algorithm and the Host
Controller to select it prior to data access on the Storage Device.

      After of the algorithm is selected, the user should specify it
prior to any access to the Storage Device.  Without specifying it,
the multiple algorithm in the Address Decoder can prohibit logical
access from the Host Controller.