基本信息:
- 专利标题： MEMORY CARD-BASED CONDITIONAL ACCESS SYSTEM FOR MOBILE BROADCAST
- 专利标题（中）：基于记忆卡的移动广播的条件访问系统
- 申请号：PCT/KR2009004137 申请日：2009-07-24
- 公开(公告)号：WO2010011106A3 公开(公告)日：2010-05-14
- 发明人： LEE JU HWA , LEE JIN YOUNG , LEE BYOUNG SUNG
- 申请人： DREAMER I CO LTD , LEE JU HWA , LEE JIN YOUNG , LEE BYOUNG SUNG
- 专利权人： DREAMER I CO LTD,LEE JU HWA,LEE JIN YOUNG,LEE BYOUNG SUNG
- 当前专利权人： DREAMER I CO LTD,LEE JU HWA,LEE JIN YOUNG,LEE BYOUNG SUNG
- 优先权： KR20080072363 2008-07-24
- 主分类号： H04N5/00
- IPC分类号： H04N5/00 ; H04N7/16
摘要：
The present invention relates to a memory card-based conditional access system (CAS) for mobile broadcasts that enables CAS services to be handled in the memory card. To this end, the present invention executes the generic bootstrapping architecture (GBA) between the CAS client and the bootstrapping service function/home subscriber system (BSF/HSS) in the memory card loaded in the CAS client so that the memory card loaded in the CAS client shares a shared key (KS) with the BSF/HSS. In addition, a long-term key message (LTKM) received from the CAS server is encrypted with a subscriber management key (SMK) induced from the KS to obtain a service encryption key (SEK) (or program encryption key (PEK)) to provide a traffic encryption key (TEK), and it is preferable that safe delivery to the descrambler of the TEK thus obtained be effected in the memory card. The present invention executes the decryption of the keys (SMK, SEK/PEK, TEK) and messages, including GBA, required to view the encrypted contents, within the memory card, thereby ensuring safe management of the keys (SMK, SEK/PEK, TEK).
摘要（中）：
本发明涉及一种能够在存储卡中处理CAS服务的用于移动广播的基于存储卡的条件访问系统（CAS）。 为此，本发明在CAS客户端和加载在CAS客户端中的存储卡中的引导服务功能/归属订户系统（BSF / HSS）之间执行通用引导架构（GBA），使得加载到 CAS客户端与BSF / HSS共享共享密钥（KS）。 另外，从CAS服务器接收到的长期密钥消息（LTKM）用从KS引发的用户管理密钥（SMK）加密以获得服务加密密钥（或程序加密密钥（PEK））到 提供流量加密密钥（TEK），并且优选地，在存储卡中实现如此获得的TEK的解扰器的安全传递。 本发明在存储卡内执行密钥（SMK，SEK / PEK，TEK）和查看加密内容所需的消息（包括GBA）的解密，从而确保密钥（SMK，SEK / PEK， TEK）。