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springboot based on a series of packaging framework. QmFramework to implements AOP, rewrite the requestBody, global exception catching,version checking, request body parameter symmetric encryption mechanism, controller packaging and the toolkit collection. thank you for using it.

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package com.starmcc.qmframework.tools.operation;

import com.starmcc.qmframework.config.QmFrameConstants;
import org.apache.tomcat.util.codec.binary.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.security.SecureRandom;
import java.util.Date;

/**
 * AES对称加密技术
 *
 * @Author qm
 */
public class QmAesTools {

    private static final Logger LOG = LoggerFactory.getLogger(QmAesTools.class);

    /**
     * 加密封装(使用配置的key和次数)
     *
     * @param data 加密数据
     * @return
     * @throws Exception
     */
    public static String encryptAES(String data) throws Exception {
        Date date = new Date();
        String str = data;
        for (int i = 0; i < QmFrameConstants.AES_NUMBER; i++) {
            str = encryptAES(str, QmFrameConstants.AES_KEY);
        }
        LOG.debug("加密用时：" + (System.currentTimeMillis() - date.getTime()));
        return str;
    }


    /**
     * 解密封装(使用配置的key和次数)
     *
     * @param data 密文
     * @return
     * @throws Exception
     */
    public static String decryptAES(String data) throws Exception {
        Date date = new Date();
        String str = data;
        for (int i = 0; i < QmFrameConstants.AES_NUMBER; i++) {
            str = decryptAES(str, QmFrameConstants.AES_KEY);
        }
        LOG.debug("解密用时：" + (System.currentTimeMillis() - date.getTime()));
        return str;
    }

    /**
     * 加密封装
     *
     * @param data 加密数据
     * @param num  加密次数
     * @param key  秘钥
     * @return
     * @throws Exception
     */
    public static String encryptAES(String data, int num, String key) throws Exception {
        Date date = new Date();
        String str = data;
        for (int i = 0; i < num; i++) {
            str = encryptAES(str, key);
        }
        LOG.debug("加密用时：" + (System.currentTimeMillis() - date.getTime()));
        return str;
    }

    /**
     * 解密封装
     *
     * @param data 密文
     * @param num  解密次数
     * @param key  秘钥
     * @return
     * @throws Exception
     */
    public static String decryptAES(String data, int num, String key) throws Exception {
        Date date = new Date();
        String str = data;
        for (int i = 0; i < QmFrameConstants.AES_NUMBER; i++) {
            str = decryptAES(str, QmFrameConstants.AES_KEY);
        }
        LOG.debug("解密用时：" + (System.currentTimeMillis() - date.getTime()));
        return str;
    }


    /**
     * 加密
     *
     * @param data
     * @param key
     * @return
     * @throws Exception
     */
    private static String encryptAES(String data, String key) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(key.getBytes(QmFrameConstants.AES_ENCODING));
        kgen.init(128, secureRandom);
        SecretKey skey = kgen.generateKey();
        byte[] raw = skey.getEncoded();
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encryptedData = cipher.doFinal(data.getBytes(QmFrameConstants.AES_ENCODING));
        String hexStr = Base64.encodeBase64String(encryptedData);
        return hexStr;
    }

    /**
     * 解密
     *
     * @param data
     * @param key
     * @return
     * @throws Exception
     */
    private static String decryptAES(String data, String key) throws Exception {
        KeyGenerator kgen = KeyGenerator.getInstance("AES");
        SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
        secureRandom.setSeed(key.getBytes(QmFrameConstants.AES_ENCODING));
        kgen.init(128, secureRandom);
        SecretKey skey = kgen.generateKey();
        byte[] raw = skey.getEncoded();
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec);
        byte[] decryptedData = cipher.doFinal(Base64.decodeBase64(data));
        String respStr = new String(decryptedData, QmFrameConstants.AES_ENCODING);
        return respStr;
    }


}