this paper will discuss the application of rf card in access control system, a series of new technology including permutation code is used to solve the safety problem.
本文首先对射频识别技术的发展历史和发展方向进行了简单介绍,讨论了不同时期各种智能卡的特点及应用;
then supplies realization of encryption chip based on permutation code by eda, and integrates the modular of signal gathering so the chip can be used in voice communication encryption.
in this paper, a permutation code security algorithm based on the block cipher that is widely used in the data transmission system is put up after carefully studied the current encryption methods.