• 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");

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