package com.zbkj.common.utils;
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import com.alibaba.fastjson.JSONObject;
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import lombok.extern.slf4j.Slf4j;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import java.util.HashMap;
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import java.util.Objects;
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/**
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* @author chenbing
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* @company miracle
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* @date 2022/4/22 18:05
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*/
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@Slf4j
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public class MiracleAECUtil {
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public static final Logger logger = LoggerFactory.getLogger(MiracleAECUtil.class);
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/**
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* key:必须16个字符,且要和前端保持一致
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*/
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private final static String KEY = "123456789ZTTJMSF";
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/**
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* 偏移量:必须16个字符,且要和前端保持一致
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*/
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private final static String IV = "ZTTJMSF123456789";
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public static void main(String[] args) {
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final String encrypt = encrypt("5");
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System.out.println("encrypt = " + encrypt);
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final String decrypt = decrypt(encrypt);
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System.out.println("decrypt = " + decrypt);
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}
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/**
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* 加密返回的数据转换成 String 类型
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*
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* @param content 明文
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*/
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public static String encrypt(String content) {
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return parseByte2HexStr(Objects.requireNonNull(aesCbcEncrypt(content.getBytes(), KEY.getBytes(), IV.getBytes())));
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}
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/**
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* 将解密返回的数据转换成 String 类型
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*
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* @param content Base64编码的密文
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*/
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public static String decrypt(String content) {
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return new String(Objects.requireNonNull(aesCbcDecrypt(parseHexStr2Byte(content), KEY.getBytes(), IV.getBytes())));
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}
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private static byte[] aesCbcEncrypt(byte[] content, byte[] keyBytes, byte[] iv) {
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try {
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SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
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//设置模式,编码,后端为PKCS5Padding,对应前端是Pkcs7
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
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return cipher.doFinal(content);
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} catch (Exception e) {
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log.info(e.toString());
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}
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return null;
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}
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private static byte[] aesCbcDecrypt(byte[] content, byte[] keyBytes, byte[] iv) {
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try {
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SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(iv));
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return cipher.doFinal(content);
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} catch (Exception e) {
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log.info(e.toString());
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}
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return null;
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}
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/**
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* 将byte数组转换成16进制String
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*/
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public static String parseByte2HexStr(byte[] buf) {
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StringBuilder sb = new StringBuilder();
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for (byte b : buf) {
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String hex = Integer.toHexString(b & 0xFF);
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if (hex.length() == 1) {
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hex = '0' + hex;
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}
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sb.append(hex.toUpperCase());
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}
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return sb.toString();
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}
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/**
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* 将16进制String转换为byte数组
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*/
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public static byte[] parseHexStr2Byte(String hexStr) {
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if (hexStr.length() < 1) {
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return null;
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}
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byte[] result = new byte[hexStr.length() / 2];
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for (int i = 0; i < hexStr.length() / 2; i++) {
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int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
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int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
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result[i] = (byte) (high * 16 + low);
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}
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return result;
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}
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}
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