摘要
条件接收系统是一种通过对视频数据加扰以及对加扰算法所使用的密钥进行多重加密的综合性系统,可以满足视频数据的高安全性要求。但如今普遍采用的通用加扰算法结构复杂,成本较大。引入了一种全新的MHT(Multiple Huffman Tables)算法作为条件接收系统中的加扰算法,并研究了该算法的加密原理及实现方法。
Condition Access System has been verified as a mature system, which can ensure multi- media data security by scrambling the data and encrypting the key used. However, general scrambling arithmetic is too complex and high cost. This paper will introduce a new arithmetic （ Multiple Huffman Tables） as the scrambling arithmetic which can finish multimedia encryption via entropy encoding to simplifysystem structure, thus CAS can be used in more special systems.
出处
《微处理机》
2008年第5期118-121,共4页
Microprocessors
