数字电视条件接收系统的密钥协商与认证算法  

Key agreement and authentication algorithm for conditional access system of DTV

作　　者：任飞[1] 刘贤洪[1] REN Fei;LIU Xian-hong(Sichuan Changhong Electric Co.,Ltd.,Mianyang 621000,China)

机构地区：[1]四川长虹电器股份有限公司,四川绵阳621000

出　　处：《陕西理工大学学报（自然科学版）》2018年第3期23-27,共5页Journal of Shaanxi University of Technology:Natural Science Edition

摘　　要：通过对数字电视机卡分离的条件接收模块卡与IC卡的通信安全性分析,提岀了一种数字电视机卡分离的条件接收模块卡与IC卡通信的密钥协商与认证算法。该算法基于数学大数有限域取模运算,其安全性以数学理论作为支撑,实现对控制字的保护,有效防止了控制字的明文共享。Based on the analysis of the IC card and the conditional access module（ CAM） communication security for the DTV machine card separation system,we have put forward a kind of DTV machine card separation CAM card and IC card communication key agreement and authentication algorithm. The algorithm is based on the mathematical large number finite domain model operation,and its security is supported by mathematical theory. The algorithm realizes the protection of the control word,and effectively prevents the sharing of the control words.

关 键 词：条件接收系统 条件接收模块卡 控制字 认证 密钥协商 

分 类 号：TN949.197[电子电信—信号与信息处理]