Java 对文件使用二进制加密方式

文件加密算法。key自定义字符串，bytes 为文件二进制流

encryptImg 可加密也可以解密

import lombok.extern.slf4j.Slf4j;

import java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * @Author: Garcia
 * @CreateDate: 2020/01/10 15:14
 * @Description: what it is class?
 */
@Slf4j
public class ImageEncryptUtil {

    /**
     * 图片加密&解密方法
     * @param bytes
     * @param key
     * @return
     */
    public static byte[] encryptImg(byte[] bytes,String key){
        BufferedInputStream bis = null;
        ByteArrayOutputStream bos = null;
        try {
            bis = new BufferedInputStream(new ByteArrayInputStream(bytes));
            bos = new ByteArrayOutputStream();
            int b;
            while((b = bis.read()) != -1) {
                char[]ase = key.toCharArray();
                int c = -1;
                for (char ch:ase){
                    c = (c==-1?b:c)^ch;
                }
                bos.write(c);
            }
        }catch (Exception e){
            log.error("图片加解密失败",e);
        }finally {
            try {
                if (bis!=null){
                    bis.close();
                }
                if (bos!=null){
                    bos.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return bos.toByteArray();
    }
}