Method of making a user piece of software secure by means of...

Details Method of making a user piece of software secure by means of... Method of making a user piece of software secure by means of...

2007-02-06

2007-02-06

Sheikh, Ayaz (Department: 2131)

Electrical computers and digital processing systems: support

Computer program modification detection by cryptography

C226S026000, C726S034000

Reexamination Certificate

active

09959419

ABSTRACT:
The invention provides a method of making a user piece of software secure by means of a user processing and memorizing unit (11u) containing at least one user secret (Su).According to the invention, the method consists in:making a user piece of software and modified data (D′) available to a user; andin a stage of running the user piece of software with the associated modified data (D′), enabling the user possessing the user unit (11u) to recover the original data (D) from the modified data (D′).

REFERENCES:
patent: 4757534 (1988-07-01), Matyas et al.
patent: 0 191 162 (1986-08-01), None
patent: 0 768 601 (1997-04-01), None
patent: 0 795 809 (1997-09-01), None
patent: WO 00/67094 (2000-11-01), None
“DEA-Bases Pseudorandom Number Generator” IBM Technical Disclosure Bulleting, US, IBM Corp. New York, vol. 35, No. 1B, Jun. 6, 1992, pp. 431-434.

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