提出了一种电视加、解扰中密钥产生、传输和分配的密钥管理方法 .其中加密算法采用与传统DES算法兼容、普通单片机即可实现的FEAL 8快速加密算法 .给出了相应密钥破译工作量的估量和该密钥管理方法抗攻击性能的分析 .估量和分析表明该方法具有运算速度快、安全性高和成本低的特点 ,因而比其他方法更为有效和实用 A key management method for key generation, transmission and distribution in TV and descrambling is proposed, in which the encryption algorithm adopts the FEAL 8 fast encryption algorithm which is compatible with the traditional DES algorithm and can be realized by a common single chip microcomputer. Key deciphering workload and the analysis of the anti-attack performance of the key management method.Simulation and analysis show that this method is more efficient and practical than other methods because of its fast computing speed, high security and low cost