com.loocme.security.encrypt.AesUtil Maven / Gradle / Ivy

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package com.loocme.security.encrypt;

import lombok.extern.slf4j.Slf4j;

import java.security.SecureRandom;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

/**
 * @author liuchi
 */
@Slf4j
public class AesUtil
{

    private static final String ENCODING = "utf-8";
    private static final int KEYBIT = 128;

    /**
     * 解密
      */
    public static String decryptAngelpay(String message, String password)
    {
        try
        {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(KEYBIT, new SecureRandom(password.getBytes(ENCODING)));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            // 创建密码器
            Cipher cipher = Cipher.getInstance("AES");
            // 初始化
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] retByte = cipher.doFinal(message.getBytes(ENCODING));
            return new String(retByte, ENCODING);
        }
        catch (Exception e)
        {
            log.error("", e);
            return null;
        }
    }

    /**
     * 加密
      */
    public static String encryptAngelpay(String message, String password)
    {
        try
        {
            KeyGenerator kgen = KeyGenerator.getInstance("AES");
            kgen.init(KEYBIT, new SecureRandom(password.getBytes(ENCODING)));
            SecretKey secretKey = kgen.generateKey();
            byte[] enCodeFormat = secretKey.getEncoded();
            SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
            // 创建密码器
            Cipher cipher = Cipher.getInstance("AES");
            // 初始化
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] encryptbyte = cipher.doFinal(message.getBytes(ENCODING));
            return new String(Base64.encode(encryptbyte));
        }
        catch (Exception e)
        {
            log.error("", e);
            return null;
        }
    }
    
    public static void main(String[] args)
    {
        System.out.println(encryptAngelpay("test", "12345678"));
        System.out.println(DesUtil.encryptAngelpay("test", "12345678"));
    }
}