AES加密解密代码

package com.huizhuyun.jeemis.api.openAPI.service;

import org.slf4j.Logger;import org.slf4j.LoggerFactory;import javax.crypto.Cipher;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;

import java.util.Base64;import java.util.Collection;import java.util.HashMap;import java.util.Map;

import static java.util.Base64.*;

/** * Aes加密解密 */public class AesMethodOpenService {    private static final Logger LOGGER = LoggerFactory.getLogger(AesMethodOpenService.class);    private static final String ENCODING = "GBK";    private static final String KEY_ALGORITHM = "AES";    private static final Base64.Decoder decoder = Base64.getDecoder();    private static final Base64.Encoder encoder = Base64.getEncoder();    /**     * 加解密算法/工作模式/填充方式     */    private  static final String DEFAUIT_CIPHER_ALGORITHM = "AES/CBC/PKCS5Padding";    /**     * 填充向量     */    private static final String FILL_VECTOR = "1234560405060708";

    /**     * 加密     *     * @param sSrc  加密前的字符串     * @param sKey 加密KEY     * @return     * @throws Exception     * @author yinning     */    public static String encrypt (String sSrc, String sKey) throws  Exception{        if (sKey == null) {            System.out.print("Key为空null");            return null;        }        // 判断Key是否为16位        if (sKey.length() != 16) {            System.out.print("Key长度不是16位");            return null;        }        byte[] raw = sKey.getBytes("utf-8");        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");        Cipher cipher = Cipher.getInstance(DEFAUIT_CIPHER_ALGORITHM);//"算法/模式/补码方式"        IvParameterSpec iv = new IvParameterSpec(sKey.getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);        byte[] encrypted = cipher.doFinal(sSrc.getBytes());        String encodedText = encoder.encodeToString(encrypted);        return encodedText;//此处使用BASE64做转码功能，同时能起到2次加密的作用。

    }

    /**     * 解密     *     * @param sSrc  解密前的字符串     * @param sKey 解密KEY     * @return     * @throws Exception     * @author yinning     */    public static String decrypt(String sSrc, String sKey) {        try {            // 判断Key是否正确            if (sKey == null) {                System.out.print("Key为空null");                return null;            }            // 判断Key是否为16位            if (sKey.length() != 16) {                System.out.print("Key长度不是16位");                return null;            }            byte[] raw = sKey.getBytes("utf-8");            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");            Cipher cipher = Cipher.getInstance(DEFAUIT_CIPHER_ALGORITHM);            IvParameterSpec iv = new IvParameterSpec(sKey.getBytes());            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);            byte[] encrypted1 = decoder.decode(sSrc);//先用base64解密            try {                byte[] original = cipher.doFinal(encrypted1);                String originalString = new String(original);                return originalString;            } catch (Exception e) {                System.out.println(e.toString());                return null;            }        } catch (Exception ex) {            System.out.println(ex.toString());            return null;        }    }

    public static void main(String[] args) throws Exception {

        String cKey = "9230967890982316";        // 需要加密的字串        String cSrc = "211421188811111212";        System.out.println(cSrc);        // 加密        long lStart = System.currentTimeMillis();        String enString = encrypt(cSrc, cKey);        System.out.println("加密后的字串是：" + enString);

        long lUseTime = System.currentTimeMillis() - lStart;        System.out.println("加密耗时：" + lUseTime + "毫秒");        lStart = System.currentTimeMillis();            String DeString = decrypt(enString, cKey);        System.out.println("解密后的字串是：" + DeString);        lUseTime = System.currentTimeMillis() - lStart;        System.out.println("解密耗时：" + lUseTime + "毫秒");

    }}

原文地址：https://www.cnblogs.com/fengfeng21/p/12154665.html