CAJ | 학술논문

传统有线电视CA(Conditional Access,条件接收)系统通过前端发送加密的ECM(Entitle Control Message,授权控制信息)和EMM(Entitle Management Message,授权管理信息)实现用户授权信息的加密,接收端机顶盒利用智能卡进行数据的解密,实现用户授权的控制.本文提出了一种基于DES(Data Encryption Standard)加密技术无需智能卡的LCA(Local Conditional Access,局域条件接收)系统的结构模型,该模型中前端管理服务器通过EMM发送用户的授权信息、ECW(Encrypt Control Word,加扰控制字)和Email等信息,接收端机顶盒通过解析EMM信息对用户进行授权控制.
전통유선전시CA(Conditional Access,조건접수)계통통과전단발송가밀적ECM(Entitle Control Message,수권공제신식)화EMM(Entitle Management Message,수권관리신식)실현용호수권신식적가밀,접수단궤정합이용지능잡진행수거적해밀,실현용호수권적공제.본문제출료일충기우DES(Data Encryption Standard)가밀기술무수지능잡적LCA(Local Conditional Access,국역조건접수)계통적결구모형,해모형중전단관리복무기통과EMM발송용호적수권신식、ECW(Encrypt Control Word,가우공제자)화Email등신식,접수단궤정합통과해석EMM신식대용호진행수권공제.
In the traditional digital cable TV CA (Conditional Access) system, the encryption of user entitle information, which is transmitted by head-end system, is archived by the encrypted ECM (Entitle Control Message) and EMM (Entitle Management Message), and the decryption of the encrypted data in the receiver side, is completed by the smart card which is integrated in the Set-Top-Box. This paper proposes a new model of cardless LCA(Local Conditional Access) system based on DES(Data Encryption Standard). In this system, the user entitle information, ECW (Encrypt Control Word) and Email etc. Are carried within EMM which is transmitted by the head-end management server, and in the Set-Top-Box side, the controlling of the entitle information is achieved by parsing the EMM information.