BASE64Decoder/BASE64Encoder Non-Through 보안 N-Through 보안

package com.hoo.client;

import sun.misc.BASE64Encoder;

public class Test {

  public static void main(String[] args) {
    BASE64Encoder encoder = new sun.misc.BASE64Encoder();

    String str = "                                                                                                  ";

    String right = encoder.encode(str.getBytes());
    System.out.println("right=" + right);
    Thread thread1 = new Thread(new Thread1(encoder, str, right));
    thread1.start();
    Thread thread2 = new Thread(new Thread2(encoder, str, right));
    thread2.start();
  }

}

class Thread1 implements Runnable {
  private BASE64Encoder encoder;
  private String str;
  private String right;

  public Thread1(BASE64Encoder encoder, String str, String right) {
    this.encoder = encoder;
    this.str = str;
    this.right = right;
  }

  public void run() {
    for (;;) {//            。
      String str1 = encoder.encode(str.getBytes());
      if (!right.equals(str1)) {
        System.err.println("wrong=" + str1);
        System.exit(0);
      }
    }
  }
}

class Thread2 implements Runnable {
  private BASE64Encoder encoder;
  private String str;
  private String right;

  public Thread2(BASE64Encoder encoder, String str, String right) {
    this.encoder = encoder;
    this.str = str;
    this.right = right;
  }

  public void run() {
    for (;;) {
      String str1 = encoder.encode(str.getBytes());
      if (!right.equals(str1)) {
        System.err.println("wrong=" + str1);
        System.exit(0);
      }
    }
  }
}

 
modify 2014-04-29
출력 조정:

import java.io.IOException;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Test {

  public static void main(String[] args) {
    BASE64Encoder encoder = new sun.misc.BASE64Encoder();

    String str = "                                                                                                  ";

    String right = encoder.encode(str.getBytes());
    System.out.println("right=" + right);
    Thread thread1 = new Thread(new Thread1(encoder, str));
    thread1.start();
    Thread thread2 = new Thread(new Thread2(encoder, str));
    thread2.start();
  }
}

class Thread1 implements Runnable {
  private BASE64Encoder encoder;
  private String str;

  public Thread1(BASE64Encoder encoder, String str_old) {
    this.encoder = encoder;
    this.str = str_old;
  }

  public void run() {
    for (;;) {//            。
      String str1 = encoder.encodeBuffer(str.getBytes());
      
      String s_new = "";
      BASE64Decoder decode = new BASE64Decoder();
      byte[] b;
      try {
        b = decode.decodeBuffer(str1);
        s_new = new String(b);
      } catch (IOException e) {
        e.printStackTrace();
      }
      
      if (!str.equals(s_new)) {
        System.err.println("wrong=" + s_new);
        System.exit(0);
      }
    }
  }
}

class Thread2 implements Runnable {
  private BASE64Encoder encoder;
  private String str;

  public Thread2(BASE64Encoder encoder, String str) {
    this.encoder = encoder;
    this.str = str;
  }

  public void run() {
    for (;;) {
      String str1 = encoder.encodeBuffer(str.getBytes());
      
      String s_new = "";
      BASE64Decoder decode = new BASE64Decoder();
      byte[] b;
      try {
        b = decode.decodeBuffer(str1);
        s_new = new String(b);
      } catch (IOException e) {
        e.printStackTrace();
      }
      
      if (!str.equals(s_new)) {
        System.err.println("wrong=" + s_new);
        System.exit(0);
      }
    }
  }
}