package com.nova.sankuai.domain.api.xiamenzhongheyinhua;
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import cn.hutool.core.codec.Base64;
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import com.nova.sankuai.infra.config.CommonException;
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import org.apache.commons.codec.digest.DigestUtils;
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import org.apache.commons.lang3.StringUtils;
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import javax.crypto.Cipher;
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import javax.crypto.spec.SecretKeySpec;
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import java.nio.charset.StandardCharsets;
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import java.util.Random;
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/**
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* 签名工具类
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*
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* @author CRM
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*/
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public class SignatureUtil {
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private static final String AES = "AES";
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private static final String CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";
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public static final String SECRET_KEY = "9WEMIkyqS4tMywWJ";
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/**
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* 串接arr参数，生成sha256 digest.
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* json，nonce，secretKey，timestamp
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*/
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public static String getSignature(String... arr) {
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StringBuilder sb = new StringBuilder();
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for (String a : arr) {
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sb.append(a);
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}
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return DigestUtils.sha256Hex(sb.toString());
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}
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/**
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* 随机生成16位字符串.
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*/
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public static String getRandomStr() {
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return getRandomStr(16);
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}
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/**
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* 随机生成字符串.
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*
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* @param length 字符串长度
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*/
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public static String getRandomStr(int length) {
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String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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Random random = new Random();
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(base.length());
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sb.append(base.charAt(number));
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}
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return sb.toString();
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}
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/**
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* 获取当前时间戳
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*
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* @return
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*/
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public static Long getTimeStamp() {
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return System.currentTimeMillis() / 1000L;
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}
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/**
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* 加密
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*
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* @param value 加密内容
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* @param secretKey 密钥
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* @return 加密后数据
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*/
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public static String encrypt(String value, String secretKey) {
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if (StringUtils.isAnyBlank(value, secretKey)) {
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throw new CommonException("加密失败,参数为空");
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}
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if (secretKey.length() != 16) {
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return null;
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}
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try {
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byte[] aesKey = secretKey.getBytes(StandardCharsets.UTF_8);
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SecretKeySpec keySpec = new SecretKeySpec(aesKey, AES);
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Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
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cipher.init(Cipher.ENCRYPT_MODE, keySpec);
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return Base64.encode(cipher.doFinal(value.getBytes(StandardCharsets.UTF_8)));
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} catch (Exception e) {
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throw new CommonException("加密失败");
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}
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}
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/**
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* 对密文进行解密.
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*
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* @param encryptedData 需要解密的密文
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* @param secretKey 密钥
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* @return 解密得到的明文
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*/
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public static String decrypt(String encryptedData, String secretKey) {
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if (StringUtils.isAnyBlank(encryptedData, secretKey)) {
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throw new CommonException("解密失败,参数为空");
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}
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if (secretKey.length() != 16) {
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return null;
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}
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try {
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byte[] aesKey = secretKey.getBytes(StandardCharsets.UTF_8);
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SecretKeySpec keySpec = new SecretKeySpec(aesKey, AES);
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Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
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cipher.init(Cipher.DECRYPT_MODE, keySpec);
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return new String(cipher.doFinal(Base64.decode(encryptedData)));
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} catch (Exception e) {
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throw new CommonException("解密失败");
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}
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}
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public static void main(String[] args) {
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String json = "[{\"city\":\"350200\",\"poolNo\":\"10003\",\"name\":\"张三\",\"phone\":\"18500000001\",\"level\":\"5\",\"sex\":\"0\",\"age\":40,\"company\":\"\",\"email\":\"2@qq.com\",\"qq\":\"123\",\"wechat\":\"123\",\"quota\":100000,\"duty\":\"0\",\"house\":\"3\",\"car\":\"3\",\"salaryType\":\"2\",\"socialSecurity\":\"1\",\"accumulationFund\":\"1\",\"lifeInsurance\":\"2\",\"creditCard\":\"无信用卡\",\"weBank\":\"无微粒贷\",\"carValue\":\"20万\",\"carAge\":\"3年2月\",\"carLoan\":\"0\"},{\"city\":\"350200\",\"poolNo\":\"10003\",\"name\":\"李四\",\"phone\":\"18500000002\",\"level\":\"3\",\"sex\":\"0\",\"age\":31,\"company\":\"\",\"email\":\"1@qq.com\",\"qq\":\"123\",\"wechat\":\"123\",\"quota\":100000,\"duty\":\"0\",\"house\":\"3\",\"car\":\"3\",\"salaryType\":\"2\",\"socialSecurity\":\"1\",\"accumulationFund\":\"1\",\"lifeInsurance\":\"2\",\"creditCard\":\"无信用卡\",\"weBank\":\"无微粒贷\",\"carValue\":\"20万\",\"carAge\":\"3年2月\",\"carLoan\":\"0\"}]";
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String secretKey = "********"; //联系管理员获取密钥
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json = encrypt(json, secretKey);
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String nonce = getRandomStr();
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String timestamp = Long.toString(getTimeStamp());
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String sign = getSignature(json, nonce, secretKey, timestamp);
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System.out.println("nonce:" + nonce);
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System.out.println("timestamp:" + timestamp);
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System.out.println("sign:" + sign);
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System.out.println("body:" + json);
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}
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}
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