本文列出了多种加解扰方式,简述了密钥管理,加扰方式的安全性和对加扰系统的要求。随着我国改革开放及市场经济的不断完善,卫星与有线电视的有偿服务(有条件接收)早已进入国内市场,我国中央电视台卫星电视的电影、体育、 This article lists a variety of descrambling methods, briefly describes the key management, security and scramble the scrambling system requirements. As China’s reform and opening up and the constant improvement of the market economy, paid services of satellite and cable television (conditional access) have already entered the domestic market. China’s CCTV satellite TV’s movies, sports,