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- package com.sooka.utils;
- import sun.misc.BASE64Decoder;
- import sun.misc.BASE64Encoder;
- import javax.crypto.Cipher;
- import javax.crypto.KeyGenerator;
- import javax.crypto.SecretKey;
- import javax.crypto.spec.SecretKeySpec;
- import java.security.SecureRandom;
- /**
- * 秘钥生成器工具类
- *
- * @author lei_wang
- */
- public class SecretKeyUtil {
- /**
- * 加密
- * 1.构造**生成器
- * 2.根据ecnodeRules规则初始化**生成器
- * 3.产生**
- * 4.创建和初始化密码器
- * 5.内容加密
- * 6.返回字符串
- */
- public static String AESEncode(String encodeRules, String content) {
- try {
- //1.构造**生成器,指定为AES算法,不区分大小写
- KeyGenerator aes = KeyGenerator.getInstance("AES");
- //2.根据ecnodeRules规则初始化**生成器
- //生成一个128位的随机源,根据传入的字节数组
- aes.init(128, new SecureRandom(encodeRules.getBytes()));
- //3.产生原始对称**
- SecretKey original_key = aes.generateKey();
- //4.获得原始对称**的字节数组
- byte[] raw = original_key.getEncoded();
- //5.根据字节数组生成AES**
- SecretKey key = new SecretKeySpec(raw, "AES");
- //6.根据指定算法AES自成密码器
- Cipher cipher = Cipher.getInstance("AES");
- //7.初始化密码器,第一个参数为加密(Encrypt_mode)或者解密解密(Decrypt_mode)操作,第二个参数为使用的KEY
- cipher.init(Cipher.ENCRYPT_MODE, key);
- //8.获取加密内容的字节数组(这里要设置为utf-8)不然内容中如果有中文和英文混合中文就会解密为乱码
- byte[] byte_encode = content.getBytes("utf-8");
- //9.根据密码器的初始化方式--加密:将数据加密
- byte[] byte_AES = cipher.doFinal(byte_encode);
- //10.将加密后的数据转换为字符串
- //这里用Base64Encoder中会找不到包
- //解决办法:
- //在项目的Build path中先移除JRE System Library,再添加库JRE System Library,重新编译后就一切正常了。
- String AES_encode = new String(new BASE64Encoder().encode(byte_AES));
- //11.将字符串返回
- return AES_encode;
- } catch (Exception e) {
- e.printStackTrace();
- }
- //如果有错就返加nulll
- return null;
- }
- /**
- * 解密
- * 解密过程:
- * 1.同加密1-4步
- * 2.将加密后的字符串反纺成byte[]数组
- * 3.将加密内容解密
- */
- public static String AESDncode(String encodeRules, String content) {
- try {
- //1.构造**生成器,指定为AES算法,不区分大小写
- KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
- //2.根据ecnodeRules规则初始化**生成器
- //生成一个128位的随机源,根据传入的字节数组
- keyGenerator.init(128, new SecureRandom(encodeRules.getBytes()));
- //3.产生原始对称**
- SecretKey original_key = keyGenerator.generateKey();
- //4.获得原始对称**的字节数组
- byte[] raw = original_key.getEncoded();
- //5.根据字节数组生成AES**
- SecretKey key = new SecretKeySpec(raw, "AES");
- //6.根据指定算法AES自成密码器
- Cipher cipher = Cipher.getInstance("AES");
- //7.初始化密码器,第一个参数为加密(Encrypt_mode)或者解密(Decrypt_mode)操作,第二个参数为使用的KEY
- cipher.init(Cipher.DECRYPT_MODE, key);
- //8.将加密并编码后的内容解码成字节数组
- byte[] byte_content = new BASE64Decoder().decodeBuffer(content);
- /*
- * 解密
- */
- byte[] byte_decode = cipher.doFinal(byte_content);
- String AES_decode = new String(byte_decode, "utf-8");
- return AES_decode;
- } catch (Exception e) {
- e.printStackTrace();
- }
- //如果有错就返加nulll
- return null;
- }
- public static void main(String[] args) {
- /*
- * 加密
- */
- String str = SecretKeyUtil.AESEncode("3fc674da58", "123/政数局/2022-10-20 - 2022-10-29/b29c94d72ee74c6d94b573d90020ea59");
- System.out.println("加密后的密文是:" + str);
- /*
- * 解密
- */
- System.out.println("解密后的明文是:" + SecretKeyUtil.AESDncode("3fc674da58", str));
- }
- }
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