Patent ID: 7124317
Filing Date: 2006-10-17
Classification: G06F

Abstract:
1. An information recording device for recording actual data in actual data part of a data storage means and recording redundant data which corresponds to the actual data in a redundant part of said data storage means, said information recording device comprising: a memory interface unit for accessing said data storage means which has a data storage area consisting of a plurality of blocks, which consists of a plurality of sectors which have an actual data part and a redundant part and a control unit for controlling said memory interface unit, wherein said memory interface unit includes a cryptosystem unit that generates an integrity check value based on actual data to be stored in the actual data part in response to a data-writing command from said control unit to said data storage means, and stores said integrity check value in the redundant part of the sectors in said data storage means, and wherein said integrity check value is a value that prevents interpolation of a block permission table and the redundant part is preset as an area in which reading by a file system of the device is prevented.