File list (Check if you may need any files):
dssclient
.........\ClientListen.java
.........\ClientLogin.java
.........\filereceive.java
.........\FileReceiver.java
.........\filesend.java
.........\FileSender.java
.........\ListUser.java
.........\monitor.java
.........\Register.java
.........\WindowHandler.java
dssserver
.........\Client.java
.........\DataBase.java
.........\ServerLogin.java
.........\ServerMain.java
encryption
..........\Des.java
..........\FileDES.java
..........\SubKey.java
signature
.........\Fhash.java
.........\SignandVer.java
zipfile
.......\Unzip.java
.......\ZipFiles.java