The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2005
Filed:
Jul. 14, 2003
Asaf Levi, Hod Hasharon, IL;
Ron Darziv, Portland, OR (US);
Yanki Margalit, Ramat-Gan, IL;
Dany Margalit, Ramat-Gan, IL;
Asaf Levi, Hod Hasharon, IL;
Ron Darziv, Portland, OR (US);
Yanki Margalit, Ramat-Gan, IL;
Dany Margalit, Ramat-Gan, IL;
Aladdin Knowledge Systems Ltd., Tel Aviv, IL;
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.