com.github.jackpanz.spring.encryption.EncryptionUtil Maven / Gradle / Ivy

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package com.github.jackpanz.spring.encryption;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

import com.github.jackpanz.spring.encryption.base64.BASE64Decoder;
import com.github.jackpanz.spring.encryption.base64.BASE64Encoder;



/**
 * AES 是一种可逆加密算法，对用户的敏感信息加密处理 对原始数据进行AES加密后，在进行Base64编码转化；
 */
public class EncryptionUtil {

    /*
     * 加密用的Key 可以用26个字母和数字组成 此处使用AES-128-CBC加密模式，key需要为16位。
     */
    final private static String sKey = "Xl-'vm7o[.jpzt1F";
    final private static String ivParameter = "%B+;^E[>S@MA3LAf";
    private static EncryptionUtil instance = null;

    private EncryptionUtil() {

    }

    public static EncryptionUtil getInstance() {
        return instance == null ? instance = new EncryptionUtil() : instance ;
    }

    public static String encrypt(String src){
        try {
            return getInstance().encryptData(src);
        }catch (Exception ex){
            ex.printStackTrace();
        }
        return null;
    }

    public static String decrypt(String src){
        try {
            return getInstance().decryptData(src);
        }catch (Exception ex){
            ex.printStackTrace();
        }
        return null;
    }

    // 加密
    private String encryptData(String sSrc) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        byte[] raw = sKey.getBytes();
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        IvParameterSpec iv = new IvParameterSpec(ivParameter.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("utf-8"));
        return new BASE64Encoder().encode(encrypted);// 此处使用BASE64做转码。
    }

    // 解密
    private String decryptData(String sSrc) throws Exception {
        try {
            byte[] raw = sKey.getBytes("ASCII");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);// 先用base64解密
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original, "utf-8");
            return originalString;
        } catch (Exception ex) {
            return null;
        }
    }

    public static void main(String[] args) throws Exception {
        // 需要加密的字串
        String cSrc = "{\n" +
                "\t\"bucketName\": \"dordorcoupon\",\n" +
                "\t\"endPoint\": \"http://oss-cn-hongkong.aliyuncs.com\",\n" +
                "\t\"accessKey\": \"Y07tpSoRJX1K2IXZ\",\n" +
                "\t\"secretKey\": \"pbKnnU66FyfCtvwH2jGF4e0nu97EFc\"\n" +
                "}";
        System.out.println("需要加密的字串：" + cSrc);
        // 加密
        long lStart = System.currentTimeMillis();
        String enString = EncryptionUtil.encrypt(cSrc);
        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");
        // 解密
        lStart = System.currentTimeMillis();
        String DeString = EncryptionUtil.decrypt(enString);
        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");

        /*
        kddcknEh143ellNRm7fTKrblEhQgOR3jbwoKy1owHTDOAv4yTWCxqChWtyxecTYTnbH4Becv+GHF
        fT++AzUglMrUr784aODjX1M8R77O+pM3lOkYs9ak7zXNcYaWNrEMYa8yQpq4/f+cNd5RaBytfqef
        6Kbai2WpCxme+dpAbUntxbcfO+0Rosz9KJh0iVO68kX+va2CjQxwa9v1KR9Deg==
        */

    }
}