Installing and controlling trial software

Details Installing and controlling trial software Installing and controlling trial software

2005-02-08

2005-02-08

Elisca, Pierre E. (Department: 3621)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

Computer instruction/address encryption

C380S201000, C380S277000, C380S278000, C380S284000, C713S162000, C714S038110, C717S174000

Reexamination Certificate

active

06854061

ABSTRACT:
According to one aspect of the invention, a method of creating a trial software product on a target system is provided. The method consists of intercepting file system calls from an installation process associated with a full software product and, responsive to a write request from the installation process, encrypting data associated with the write request if the write request is associated with one of a predetermined set of critical product files. The predetermined set of critical product files including those product files comprising the full software product that have been identified as files to which access is to be controlled.

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