java 简单的对称加密解密，加密后无特殊字符串

 代码：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;

import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;

import org.apache.log4j.Logger;
import org.apache.commons.codec.binary.Hex;

/**
* @ClassName: SecUtil 
* @Description: 加密 解密 数据库信息 
* @author lhy
* @date 2018年6月6日 上午9:36:23 
* @version V1.0
 */
public class SecUtil  {

    private static final Logger logger = Logger.getLogger(SecUtil.class.getName());

    /**
     * 自定义 KEY
     */
    private static byte[] keybytes = { 0x31, 0x32, 0x33, 0x34, 0x35, 0x50,
            0x37, 0x38, 0x39, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46 };



    public static void main(String[] args) {
        BufferedReader reader;
        try {
            String st = "";
            do{
                if("".equals(st)) {
                    logger.info("AES加密与解密操作:");
                    logger.info("\"E\":加密 \t\"D\":解密\t\t\"Q\":退出");
                    logger.info("请输入操作代码:");
                }
                reader = new BufferedReader(new InputStreamReader(System.in));
                st = reader.readLine();
                if("E".equalsIgnoreCase(st)) {
                    logger.info("请输入待加密字符串:");
                    st = reader.readLine();
                    if(!"".equals(st.trim())) {
                        logger.info("加密前:" + st.trim());
                        logger.info("加密后:" + encrypt(st.trim()) + "\n\n");
                    }
                    st = "";
                }else if("D".equalsIgnoreCase(st)) {
                    logger.info("请输入待解密字符串:");
                    st = reader.readLine();
                    if(!"".equals(st.trim())) {
                        logger.info("解密前:" + st.trim());
                        logger.info("解密后:" + decrypt(st.trim()) + "\n\n");
                    }
                    st = "";
                }
            } while(!st.equalsIgnoreCase("Q"));
        } catch (Exception e) {
            logger.error(e);
        }
    }




    /** 
    * @Title: encrypt 
    * @author yunlin.liu
    * @Description: 加密
    * @param @param value
    * @param @return    设定文件 
    * @return String    返回类型 
    * @throws 
    */
    public static String encrypt(String value) {

        String s = null;

        int mode = Cipher.ENCRYPT_MODE;

        try {
            Cipher cipher = initCipher(mode);

            byte[] outBytes = cipher.doFinal(value.getBytes());

            s = String.valueOf(Hex.encodeHex(outBytes));
        } catch (Exception e) {
            logger.error(e);
        }

        return s;
    }


    /** 
    * @Title: decrypt 
    * @author yunlin.liu
    * @Description: 解密 
    * @param @param value
    * @param @return    设定文件 
    * @return String    返回类型 
    * @throws 
    */
    public static String decrypt(String value) {
        String s = null;

        int mode = Cipher.DECRYPT_MODE;

        try {
            Cipher cipher = initCipher(mode);

            byte[] outBytes = cipher
                    .doFinal(Hex.decodeHex(value.toCharArray()));

            s = new String(outBytes);
        } catch (Exception e) {
            logger.error(e);
        }

        return s;
    }


    /** 
    * @Title: initCipher 
    * @author yunlin.liu
    * @Description: 初始化密码
    * @param @param mode
    * @param @return
    * @param @throws NoSuchAlgorithmException
    * @param @throws NoSuchPaddingException
    * @param @throws InvalidKeyException    设定文件 
    * @return Cipher    返回类型 
    * @throws 
    */
    private static Cipher initCipher(int mode) throws NoSuchAlgorithmException,
            NoSuchPaddingException, InvalidKeyException {
        Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
        Key key = new SecretKeySpec(keybytes, "AES");
        cipher.init(mode, key);
        return cipher;
    }
}

原文：E:\ketpTemp\2019-05-30\e8696d9b9af05b81510c1e80f96a8658.pdf

加密后：

 ab06b8f30d1079aec25fafe136bb6a8282c417c5930d6939f6e7089cd9943e215d5f2add64140a4e68d9d76da5de12caa278e6833185db484fbd00ddffda0781

 

原文：https://blog.csdn.net/xiangbudao8/article/details/80811564