Method for indicating the integrity of use-information of a...

Details Method for indicating the integrity of use-information of a... Method for indicating the integrity of use-information of a...

2005-05-24

2005-05-24

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C714S001000

Reexamination Certificate

active

06898555

ABSTRACT:
A method for indicating the integrity of the use-information of a program, comprising: providing a mechanism based on the state of a marker file (being one or more files dedicated especially for this purpose) for generating upon request an asymmetric (i.e. can be read by a user but cannot be altered by him) and unique or pseudo-unique value; instructing the mechanism to generate a value; sealing the use-information with the generated value; and indicating the integrity of the sealed data by the correspondence of the stored value with the current value returned by the mechanism. In a preferred embodiment of the invention, the information is stored in a secure manner (e.g. encrypted, digitally signed, and so forth). The invention may be implemented in any licensing model in which the use-information is important, like a Try before you Buy model, renting a program, and so forth.

REFERENCES:
patent: 20040015426 (2004-01-01), Tadayon et al.
patent: 20040030912 (2004-02-01), Merkle et al.
patent: 20040236945 (2004-11-01), Risan et al.

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