Traditional lock faces safety problem of low performance and poor reliability. Based on the data stored in the chip of confidentiality,and using EDA technology top⁃down design approach,we proposed the design and implementation of a 4⁃bit FPGA⁃based electronic lock,which provides unlock,password change,alarm and LCD functions.Design analysis and simulation results show that the designed FPGA⁃based electronic lock provides better confidentiality,flexibility and reliability for data storage.This approach provides a novel solution for improving data confidentiality.%针对于传统密码锁安全性能低及可靠性差等问题，立足于芯片中数据存储的保密性，运用 EDA 技术自顶向下的设计方法，提出了基于FPGA的四位电子密码锁的设计与实现方法，所设计的四位电子密码锁具有解锁、密码修改、报警提示及液晶显示功能。设计分析与仿真结果表明，基于 FPGA 所设计的四位电子密码锁保密性更高、灵活性更好，使得数据存储的整体可靠性增强，为提高数据的保密性提供了新的解决方案。
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