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:
Sep. 10, 2013
Filed:
Oct. 07, 2008
Young Ho Jeong, Daejeon, KR;
Soon Choul Kim, Daejeon, KR;
Heejeong Kim, Daejeon, KR;
Eun Jung Kwon, Daejeon, KR;
Han Seung Koo, Daejeon, KR;
O Hyung Kwon, Daejeon, KR;
Soo IN Lee, Daejeon, KR;
Young Ho Jeong, Daejeon, KR;
Soon Choul Kim, Daejeon, KR;
Heejeong Kim, Daejeon, KR;
Eun Jung Kwon, Daejeon, KR;
Han Seung Koo, Daejeon, KR;
O Hyung Kwon, Daejeon, KR;
Soo In Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A method of operating a headend system for a downloadable conditional access service, the method including: receiving, by an Authentication Proxy (AP) server, basic authentication information from a Downloadable Conditional Access System (DCAS) host, the basic authentication information being required to authenticate the DCAS host; transmitting, by the AP server, the basic authentication information to an external trusted authority device which authenticates the DCAS host; generating, by the AP server, a session key for encrypting/decrypting a secure micro client using a session key sharing factor; obtaining, by the AP server, download-related information of the secure micro client from a DCAS Provisioning Server (DPS); and commanding, by the AP server, an Integrated Personalization System (IPS) server to download the secure micro client to the DCAS host based on the download-related information, the secure micro client being encrypted by the session key.