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:
Feb. 17, 2015
Filed:
Jan. 19, 2011
Ming-chih Kao, Hsinchu, TW;
Ming-Chih Kao, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A software authorization system has a server end and a user end. A software authorization method includes acquiring a software identification code of a protected software when the user end downloads the protected software from the server end; transmitting the software identification code and an inherent user identification code to the server end; acquiring a first key and main key by the server end according to the user identification code and the software identification code, respectively, so as to generate a second key by operating the main key and the first key and transmit the second key to the user end; restoring the main key by the user end with the second key combined with the first key; and decrypting the protected software by the main key. Therefore, the protected software is hard to be decrypted.