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:
Mar. 05, 2013
Filed:
Jun. 01, 2007
Aidan Hughes, Bellevue, WA (US);
Douglas R. DE LA Torre, Mercer Island, WA (US);
Aidan Hughes, Bellevue, WA (US);
Douglas R. de la Torre, Mercer Island, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A computer readable medium for activating a software application for execution on a designated computer, where the computer readable medium has stored thereon computer executable instructions for performing the following steps: computing an installation identifier reflective of the software application and the designated computer; receiving an activation code generated in accordance with the installation identifier and a blinding factor value; computing a first verification code as a function of the installation identifier; computing a trial blinding factor value; computing a decryption key as a function of the trial blinding factor value and the activation code; using the decryption key to decrypt a second verification code; verifying that the first verification code matches the second verification code; and, activating the software application for execution on the designated computer.