Method and apparatus for changing and adding activation keys...

Details Method and apparatus for changing and adding activation keys... Method and apparatus for changing and adding activation keys...

2007-06-18

2010-10-12

Chai, Longbit (Department: 2431)

Electrical computers and digital processing systems: support

Computer program modification detection by cryptography

C713S188000, C713S189000, C713S190000, C713S191000, C713S192000, C726S027000, C726S028000, C726S029000, C726S030000

Reexamination Certificate

active

07814334

ABSTRACT:
A method and apparatus for changing and adding activation keys for functions of digital content without having to change and recompile the digital content. The rules for validating activation keys, the code for providing instructions for executing the rules for validating the activation keys and a template for identifying possible activation keys, which keys are currently valid and validating rules associated with each currently valid activation key are separated and separately secured.

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PCT International Search Report and Written Opinion Aug. 20, 2008 for Application No. PCT/EP2008/056507 filed May 27, 2008.

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