基于硬件实现和分组授权的CA设计与实现

Design and Implementation of CA Based on the Hardware Realization and Grouped Authorization

针对目前数字电视条件接收系统的安全隐患和黑客的攻击手段,设计并实现了一种全新的CA系统.将密钥管理和加解密做进芯片内部,完全由硬件实现,代替了原来智能卡的功能,把原来暴露给黑客的弱点全都隐藏起来,并且通过分组授权和主动防御进一步提高其安全性.这种设计有可能成为下一代CAS的设计模型.

Be dead against the security hidden trouble and hacker＇s attack, this paper designs a fire-new CA system. In this system, instead of the intellectual card, cipher key management, encrypt and decrypt are integrated into one chip by hardware, so that the weaknesses could be keep back from the hackers. In addition, grouped authorization and active defense can improve the security of this system, which may become the model of next generation CAS.