摘要
数字电视节目的数字条件接收系统是保护内容供应商利益的关键技术之一。通过节目加扰和多层加密机制,在CA开放的标准接口下,采用对称和非对称加密算法,完成用户的授权消息和用户管理消息的生成。通过密钥体系和设备的分离,依靠IC卡的安全性来保障系统的安全。
The digital control access of digital television program is one of essential technical which protect content supplier benefit.Under the open standard connection of CA,the disturbing program with the multilayered encryption mechanism,uses the symmetrical and the asymmetrical encryption algorithm,while it products the authorized user news and management news.Through the key system and the equipment separation,it depends upon the security of the IC card to safeguard the security of the system.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第8期154-156,164,共4页
Computer Engineering and Applications
关键词
数字条件接收
加密体系
多层密钥
IC卡解密
Digital control access,Encryption system,Multilayered encryption,IC card decryption
