Decrypt Zip File with 128bit AES

Question

Hello my name is George ,
I want to make a program to decrypt a zip file with 128-bit AES Algorithm using Brute Force and Dictionary Attack.
Because it is my first time I try to make something with the encrytpion libraries I don't know much.
Because that is an exercise they told us to use this library [http://www.javamex.com/arcmexer/].
So I want to give me some help.
Any help is welcoming.

Answer 1

Hi.
I want to make a program to read a zip file with a password(aes encrytpion) and I foun the password.
At first i know the password and I want to do If I write it wright.
I read a zip file but when I try to read it with encryption I take that exception.
That is the program
import com.javamex.arcmexer.*;*
*import java.io.*;
import java.lang.*;*
*import java.util.*;
public class Decryption {
     public static void main(String[] args){
          String pw = "12345678";
          System.out.print("\rEnter the filename to be encrypted (full path is needed if not located at the same directory): ");
                try {
               FileInputStream f = new FileInputStream("C://Giorgos.zip");
               ArchiveReader r = ArchiveReader.getReader(f);
               ArchiveEntry entry =r.nextEntry();     
               BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
                        while ((entry = r.nextEntry())!= null) {
                    String filename = entry.getFilename();
                                InputStream in = entry.getInputStream();
                                String inputLine = input.readLine();
                                if (inputLine.equalsIgnoreCase("yes")) {
           +BufferedReader br = new BufferedReader(new InputStreamReader(entry.getInputStream(filename)));+  //HERE IS MY PROBLEM
                                    +String line;+
                                     +while ((line = br.readLine())!= null) {+
                                    +System.out.println(line);+
<                                    <em>input.close();+
<                       <em>// }+
+               if (entry.isProbablyCorrectPassword(pw)){+
+                    System.out.println("Password found: "+  pw);
          } catch (Exception e){
                    System.out.println("Exception raised!");
}And the exception is:
*{color:#0000ff}C:\Documents and Settings\Ergasia\Decryption\src\Decryption.java:26: getInputStream() in com.javamex.arcmexer.ArchiveEntry cannot be applied to (java.lang.String)*
*BufferedReader br = new BufferedReader(new InputStreamReader(entry.getInputStream(filename)));{color}*