公开(公告)号：US20070195950A1

公开(公告)日：2007-08-23

申请号：US11705051

申请日：2007-02-12

申请人： Henri Kudelski ,  Joel Conus

发明人： Henri Kudelski ,  Joel Conus

IPC分类号： H04L9/30

CPC分类号： H04N7/162 ,  H04N21/2347 ,  H04N21/26606 ,  H04N21/4405 ,  H04N21/4623 ,  H04N21/63345

摘要： This invention relates to a method for the transmission of management data to at least one multimedia unit or a group of multimedia units. This method is characterised in that said management data is sent in the form of at least one authorisation message encrypted by means of at least one synchronisation key (SK), the sending of said at least one authorisation message being repeated cyclically and intended for said multimedia unit or said group of multimedia units, and in that the synchronisation key is modified at least during each cycle.

摘要翻译： 本发明涉及一种用于将管理数据传输到至少一个多媒体单元或一组多媒体单元的方法。 该方法的特征在于，所述管理数据以至少一个授权消息的形式发送，所述授权消息通过至少一个同步密钥（SK）加密，所述至少一个授权消息的发送被周期性重复地发送并且用于所述多媒体 单元或所述多媒体单元组，并且至少在每个周期期间修改同步密钥。