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    METHOD, SYSTEM, SUBSCRIBER EQUIPMENT AND MULTI-MEDIA SERVER FOR DIGITAL COPYRIGHT PROTECTION
    3.
    发明公开
    METHOD, SYSTEM, SUBSCRIBER EQUIPMENT AND MULTI-MEDIA SERVER FOR DIGITAL COPYRIGHT PROTECTION 有权
    VERFAHREN，系统，TEILNEHMERGERÄTUND多媒体服务商ZUM DIGITALEN COPYRIGHT-SCHUTZ

    公开(公告)号：EP2006787A4

    公开(公告)日：2009-07-15

    申请号：EP07720574

    申请日：2007-03-28

    申请人： HUAWEI TECH CO LTD

    发明人： YANG JIAN ,  ZHAO QIN

    IPC分类号： G06F21/00 ,  H04L9/00 ,  H04N7/16

    CPC分类号： G06F21/10 ,  G06F2221/2115 ,  H04L9/0844 ,  H04L9/3213 ,  H04L2209/603 ,  H04N7/1675 ,  H04N7/17318 ,  H04N21/23895 ,  H04N21/2541 ,  H04N21/26613 ,  H04N21/64322

    摘要： The present invention discloses digital copyright protection method, which includes: stream media server negotiation with copyright center to generate copyright object RO, RO carrying copyright service regulations and establishing encrypted communication channel information; subscriber equipment receiving RO, through said establishing encrypted communication channel information carried by RO to establish encrypted communication channel with stream media server; stream media server transmitting media stream to subscriber equipment. The present invention also discloses DRM system, subscriber equipment and multi-media server. Through encrypting logical channel rather than encrypting media stream itself, the present invention avoids additional decrypting media stream consumption in application layer of terminal end, reduces terminal equipment performance requirement and meets subscriber's taste. Moreover, through establishing exclusive logical channel between terminal equipment and stream media server, the present invention also reduces risk of intercepting and capturing media stream by third party and raises end-to-end communication security.

    摘要翻译： 本发明公开了一种数字版权保护方法，包括：流媒体服务器与版权中心协商生成版权对象RO，携带版权服务规则的RO，建立加密通信通道信息; 通过所述RO建立的加密通信信道信息建立与流媒体服务器建立加密通信通道的用户设备接收RO; 流媒体服务器将媒体流传输到用户设备。 本发明还公开了DRM系统，用户设备和多媒体服务器。 本发明通过对逻辑信道进行加密而不是对媒体流本身进行加密，避免了终端应用层额外解密媒体流的消耗，降低了终端设备的性能要求，满足了用户的口味。 此外，通过在终端设备与流媒体服务器之间建立专用的逻辑通道，本发明还降低了第三方拦截和截取媒体流的风险，提高了端到端的通信安全性。