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:
Jul. 01, 2014
Filed:
Jun. 28, 2011
Dae-hee Seo, Daejeon, KR;
Hyeok-chan Kwon, Daejeon, KR;
Seung-min Lee, Daejeon, KR;
Yong-hyuk Moon, Daejeon, KR;
Jae-hoon Nah, Daejeon, KR;
Taek-yong Nam, Daejeon, KR;
Dong-il Seo, Daejeon, KR;
Dae-Hee Seo, Daejeon, KR;
Hyeok-Chan Kwon, Daejeon, KR;
Seung-Min Lee, Daejeon, KR;
Yong-Hyuk Moon, Daejeon, KR;
Jae-Hoon Nah, Daejeon, KR;
Taek-Yong Nam, Daejeon, KR;
Dong-Il Seo, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
An authentication apparatus for a non-real-time IPTV system decrypts a first encrypted value included in a contents request message received from a device using a preset session key, and then verifies the validity of the contents request message. If the verification results of the contents request message are valid, the authentication apparatus encrypts a variation between timestamps of the authentication apparatus and the device using the session key, and then generates a second encrypted value. After verification information by which the device is capable of verifying the authentication apparatus has been generated using the second encrypted value, the authentication apparatus sends verification information, together with contents corresponding to the contents request message, to the device.