用java实现的，使用了rsa算法，可用于加解密文本文档-Achieved with java, use the rsa algorithm, can be used for encryption and decryption text document

DES.java generates the symmetric key using DES algorithm. Key size assigned here is 64 bits. It works only for the key size of 64 bits. 56 bits is mentioned in the coding remaining 8bits is accessed inbuilt package. Encryption and decryption method i