简单的对图片文件进行加密解密

绝地灬酷狼 2022-06-18 05:50 501阅读 0赞

package com.beijing.lebo.util.image;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.IOException;
    
    /**
     * 图片加密解密工具类
     * 
     * @author Administrator
     */
    public class ImageLock {
    
    	/**
    	 * @param args
    	 *            测试主方法
    	 * @throws IOException
    	 */
    	public static void main(String[] args) throws IOException {
    		lockImage("C:/1.png", "C:/2.png", 111111);
    		unLockImage("C:/2.png", "C:/3.png", 111111);
    	}
    
    	/**
    	 * 
    	 * @param file_path
    	 *            待加密的图片路径
    	 * @param save_path
    	 *            加密后的图片路径
    	 * @param lock_num
    	 *            加密密钥
    	 * @throws IOException
    	 */
    	public static void lockImage(String file_path, String save_path,
    			int lock_num) throws IOException {
    		File soure = new File(file_path);
    		File save = new File(save_path);
    		lockImage(soure, save, lock_num);
    	}
    
    	/**
    	 * 
    	 * @param file_path
    	 *            待加密的图片文件
    	 * @param save_path
    	 *            加密后的图片文件
    	 * @param lock_num
    	 *            加密密钥
    	 * @throws IOException
    	 */
    	public static void lockImage(File soure_file, File save_file, int lock_num)
    			throws IOException {
    		FileInputStream fis = new FileInputStream(soure_file);
    		FileOutputStream fos = new FileOutputStream(save_file);
    		int b = 0;
    		while ((b = fis.read()) != -1) {
    			fos.write(b - lock_num);
    			fos.flush();
    		}
    		fos.close();
    		fis.close();
    		System.out.println("加密完成");
    	}
    
    	/**
    	 * 
    	 * @param file_path
    	 *            待解密的图片路径
    	 * @param save_path
    	 *            解密后的图片路径
    	 * @param unlock_num
    	 *            解密密钥
    	 * @throws IOException
    	 */
    	public static void unLockImage(String file_path, String save_path,
    			int unlock_num) throws IOException {
    		File soure = new File(file_path);
    		File save = new File(save_path);
    		unLockImage(soure, save, unlock_num);
    	}
    
    	/**
    	 * 
    	 * @param file_path
    	 *            待解密的图片文件
    	 * @param save_path
    	 *            解密后的图片文件
    	 * @param unlock_num
    	 *            解密密钥
    	 * @throws IOException
    	 */
    	public static void unLockImage(File soure_file, File save_file,
    			int unlock_num) throws IOException {
    		FileInputStream fis = new FileInputStream(soure_file);
    		FileOutputStream fos = new FileOutputStream(save_file);
    		int b = 0;
    		while ((b = fis.read()) != -1) {
    			fos.write(b + unlock_num);
    			fos.flush();
    		}
    		fos.close();
    		fis.close();
    		System.out.println("解密完成");
    	}
    }