AES,BigInteger,MD5加密

Posted 2020-10-12 code home

 

 

 

 

package cn.com.gome.cashier.web;
import java.lang.reflect.Method;
import java.math.BigInteger;
import java.security.MessageDigest;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;

public class MyTestDemo {
 
 /**
  * @Title: encrypt
  * @Description: AES对称加密
  * @param @param password
  * @param @return 设定文件
  * @return String 返回类型
  * @throws
  */
 public static String encrypt(String password,String securityKey) {

  byte[] crypted = null;
  try {
   SecretKeySpec skey = new SecretKeySpec(securityKey.getBytes(), "AES");
   Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//调用静态工厂方法得到Cipher对象
   cipher.init(Cipher.ENCRYPT_MODE, skey);//ENCRYPT_MODE,加密数据
   crypted = cipher.doFinal(password.getBytes());
  } catch (Exception e) {
   System.out.println(e.toString());
  }
  try {
   return new String(encodeBase64(crypted)).replace(" ", "");
  } catch (Exception e) {
   e.printStackTrace();
  }
  return "";
 }
 
 /**
  * @Title: decrypt
  * @Description: 对称解密
  * @param @param encrypted
  * @param @return 设定文件
  * @return String 返回类型
  * @throws
  */
 public static String decrypt(String input,String securityKey) {
  byte[] output = null;
  try {
   SecretKeySpec skey = new SecretKeySpec(securityKey.getBytes(), "AES");
   Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
   cipher.init(Cipher.DECRYPT_MODE, skey);//DECRYPT_MODE,解密数据
   output = cipher.doFinal(decodeBase64(input));
  } catch (Exception e) {
   System.out.println(e.toString());
   return "";
  }
  return new String(output);
 }
 private static final int RADIX = 16;
 private static final String SEED = "0933910847463829232312312";

 
 /**
 * @Title: encrypt
 * @Description: 对称加密
 * @param @param password
 * @param @return    设定文件
 * @return String    返回类型
 * @throws
  */
 public static final String encrypt(String password) {
  
//  if(isEmpty(password)){
//   return "";
//  }

  BigInteger bi_passwd = new BigInteger(password.getBytes());

  BigInteger bi_r0 = new BigInteger(SEED);
  BigInteger bi_r1 = bi_r0.xor(bi_passwd);//位运算

  return bi_r1.toString(RADIX);
 }

 /**
 * @Title: decrypt
 * @Description: 对称解密
 * @param @param encrypted
 * @param @return    设定文件
 * @return String    返回类型
 * @throws
  */
 public static final String decrypt(String encrypted) {
  
//  if(isEmpty(encrypted)){
//   return "";
//  }
  
  BigInteger bi_confuse = new BigInteger(SEED);

  try {
   BigInteger bi_r1 = new BigInteger(encrypted, RADIX);
   BigInteger bi_r0 = bi_r1.xor(bi_confuse);
   return new String(bi_r0.toByteArray());
  } catch (Exception e) {
   return "";
  }
  
 }
 
 /**
 * @Title: encodeMessage
 * @Description: md5签名
 * @param @param data
 * @param @return
 * @param @throws Exception    设定文件
 * @return String    返回类型
 * @throws
  */
 public static String encodeMessage(String data) throws Exception {
  
//  if(isEmpty(data)){
//   return "";
//  }
  
  MessageDigest md5 = MessageDigest.getInstance("MD5");
  md5.update(data.getBytes());
  return toHex(md5.digest());
  
 }

 private static String toHex(byte[] buffer) {
  byte[] result = new byte[buffer.length * 2];

  for (int i = 0; i < buffer.length; i++) {
   byte[] temp = getHexValue(buffer[i]);
   result[(i * 2)] = temp[0];
   result[(i * 2 + 1)] = temp[1];
  }
  return new String(result).toUpperCase();
 }

 private static byte[] getHexValue(byte b) {
  int value = b;
  if (value < 0) {
   value = 256 + b;
  }
  String s = Integer.toHexString(value);
  if (s.length() == 1) {
   return new byte[] { 48, (byte) s.charAt(0) };
  }
  return new byte[] { (byte) s.charAt(0), (byte) s.charAt(1) };
 }
 /***
     * encode by Base64
     */ 
    private static String encodeBase64(byte[]input) throws Exception{ 
        Class clazz=Class.forName("com.sun.org.apache.xerces.internal.impl.dv.util.Base64"); 
        Method mainMethod= clazz.getMethod("encode", byte[].class); 
        mainMethod.setAccessible(true); 
         Object retObj=mainMethod.invoke(null, new Object[]{input}); 
         return (String)retObj; 
    } 
    /***
     * decode by Base64
     */ 
    private static byte[] decodeBase64(String input) throws Exception{ 
        Class clazz=Class.forName("com.sun.org.apache.xerces.internal.impl.dv.util.Base64"); 
        Method mainMethod= clazz.getMethod("decode", String.class); 
        mainMethod.setAccessible(true); 
         Object retObj=mainMethod.invoke(null, input); 
         return (byte[])retObj; 
    }
    /**
     * @param bytes
     * @return
     */ 
    private static byte[] decode(final byte[] bytes) { 
        return Base64.decodeBase64(bytes); 
    } 
 
    /**
     * 二进制数据编码为BASE64字符串
     *
     * @param bytes
     * @return
     * @throws Exception
     */ 
    private static String encode(final byte[] bytes) { 
        return new String(Base64.encodeBase64(bytes)); 
    }
    /** 
     * 编码 
     * @param bstr 
     * @return String 
     */   
    private static String encodes(byte[] bstr){   
    return new sun.misc.BASE64Encoder().encode(bstr);   
    }   
   
    /** 
     * 解码 
     * @param str 
     * @return string 
     */   
    private static byte[] decodes(String str){   
    byte[] bt = null;   
    try {   
        sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();   
        bt = decoder.decodeBuffer( str );   
    } catch (Exception e) {   
        e.printStackTrace();   
    }   
        return bt;   
    } 
   
 public static void main(String[] args) {
//  String str = "移动端订单支付请求接口    /cashier-mobile/src/main/java/cn/com/gome/cashier/mobile/dubbo/impl/MobileOrderPayReqFacadeServiceImpl.java"
//+"移动端网关确认支付接口    /cashier-mobile/src/main/java/cn/com/gome/cashier/mobile/dubbo/impl/GatewayConfirmPayFacadeServiceImpl.java"
//+"银行分期信息与快捷卡查询接口  /cashier-mobile/src/main/java/cn/com/gome/cashier/mobile/dubbo/impl/BankPartAndQuickQueryFacadeServiceImpl.java  移动端只针对二次支付，未绑卡提示pc端绑卡"
//+"移动端收银台活动刷新任务 /cashier-task/src/main/java/cn/com/gome/cashier/task/step/impl/MobileCashierActivityTask.java   MOBILE_ACTIVITY_ supplierNo+  + cashierVersion  网关确认支付"
//+"移动端促销语自动刷新缓存任务 /cashier-task/src/main/java/cn/com/gome/cashier/task/step/impl/MobileSupperCacheTask.java  MOBILE_PROMOTION_ supplierNo+  + cashierVersion  订单支付请求 "
//+"1，配置完收银台银行分发不配置供应商关联银行，可以勾选设备支付方式配置，可以进行供应商分发及商户号匹配";
  
  //秘钥必须为16位
  String str = "12345678901234567890";
  String encr = encrypt(str,"qazxswedcqazwsxe");
  System.out.println(encr);
  String dec = decrypt(encr,"qazxswedcqazwsxe");
  System.out.println("dec:"+dec);

//  String enc = encrypt(str);
//        System.out.println(enc);
//  String dec = decrypt(enc);
//  System.out.println(dec);
//  BigInteger bi = new BigInteger("21312");
//  System.out.println(bi.toString());
  
//  String en = "";
//  String en2 = "";
//  String en3 = "";
//  try {
//   en = encodeMessage("xmh128");
//    en2 = encodeMessage(str);
//    en3 = encodeMessage(str);
//  } catch (Exception e) {
//   e.printStackTrace();
//  }
//  System.out.println(en.toString());
//  System.out.println(en2.toString());
//  System.out.println(en3.toString());
 }
}