Random bit mask generation for obscuring data on nonvolatile...

Details Random bit mask generation for obscuring data on nonvolatile... Random bit mask generation for obscuring data on nonvolatile...

2011-08-30

2011-08-30

Chen, Shin-Hon (Department: 2431)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S194000, C705S064000, C705S075000

Reexamination Certificate

active

08010807

ABSTRACT:
A method and apparatus for preventing unauthorized access to information temporarily stored in memory, such as a hard disk drive, associated with a digital document processor, such as a digital copier, printer, or facsimile machine. This invention includes storing information to memory, conducting an operation on the information, and automatically overwriting the information one or more times with a bit mask. Bit masks may be non-random or random sequences of binary values.

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