一种逻辑加密卡安全体系的实现

Realization of the Security System for a Smart Card with Logic Circuit

介绍并讨论了一种逻辑加密卡安全体系实现的设计方法，针对加密卡成本较低、使用方便、安全性较好、用途广泛等要求，提出了包括密码认证体系和写保护体系在内的安全系统。

A design technigue is described for the security system in a smart card,which is composed of E 2PROM arrays and logic circuits. The system includes secret code verification and write protection. The main design idea is to control the updating process of the E 2PROM Cell. Simulation results under different situations are given.