一种基于新型USB Key的加解密系统设计与实现

The Design and Realization of an Encryption or Decryption System Based on the Newly-invented USB Key

目前,数据加解密系统的方式有很多,但通过USB Key硬件实现的还相对较少。该文主要介绍了一款新型USB Key加解密系统的设计与实现。大多数USB Key只能实现诸如身份识别这样的基础功能,而此USB Key在此之上加载了数据加解密系统。在加解密功能实现的过程中,当同时输入中英文时会产生数据编码的冲突。针对此问题,该文以ASCII码和GB2312码为基础进行了编码的改造。USB Key在数据加解密过程中使用的算法为RSA算法。

There have been many ways to encrypt or decrypt data for computers so far, but ways using USB Key are relatively not many.This paper mainly introduces the design and realization of a newly-invented USB Key.Most USB Keys can only have some basic fimctions such as identity authentication, whereas this newly-invented USB Key will load data encryption or decryption based on this.ln the process of encrypting or decrypting the data, the problem of data coding conflict will arise when typing Chinese and English at the same time.Therefore, in this thesis, coding will be transformed based on ASCII and GB2312 in order to deal with this issue. Meanwhile, RSA is used as the algorithm during encryption or decryption.