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@@ -0,0 +1,116 @@
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+package com.util;
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+
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+
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+import sun.misc.BASE64Encoder;
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+
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+import javax.crypto.Cipher;
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+import javax.crypto.KeyGenerator;
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+import javax.crypto.SecretKey;
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+import javax.crypto.spec.SecretKeySpec;
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+import java.security.SecureRandom;
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+import sun.misc.BASE64Decoder;
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+
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+/**
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+ * 秘钥生成器工具类
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+ *
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+ * @author lei_wang
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+ */
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+public class SecretKeyUtil {
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+
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+
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+ /**
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+ * 加密
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+ * 1.构造**生成器
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+ * 2.根据ecnodeRules规则初始化**生成器
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+ * 3.产生**
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+ * 4.创建和初始化密码器
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+ * 5.内容加密
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+ * 6.返回字符串
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+ */
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+ public static String AESEncode(String encodeRules, String content) {
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+ try {
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+ //1.构造**生成器，指定为AES算法,不区分大小写
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+ KeyGenerator aes = KeyGenerator.getInstance("AES");
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+ //2.根据ecnodeRules规则初始化**生成器
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+ //生成一个128位的随机源,根据传入的字节数组
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+ aes.init(128, new SecureRandom(encodeRules.getBytes()));
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+ //3.产生原始对称**
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+ SecretKey original_key = aes.generateKey();
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+ //4.获得原始对称**的字节数组
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+ byte[] raw = original_key.getEncoded();
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+ //5.根据字节数组生成AES**
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+ SecretKey key = new SecretKeySpec(raw, "AES");
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+ //6.根据指定算法AES自成密码器
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+ Cipher cipher = Cipher.getInstance("AES");
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+ //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
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+ cipher.init(Cipher.ENCRYPT_MODE, key);
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+ //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
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+ byte[] byte_encode = content.getBytes("utf-8");
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+ //9.根据密码器的初始化方式--加密：将数据加密
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+ byte[] byte_AES = cipher.doFinal(byte_encode);
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+ //10.将加密后的数据转换为字符串
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+ //这里用Base64Encoder中会找不到包
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+ //解决办法：
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+ //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。
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+ String AES_encode = new String(new BASE64Encoder().encode(byte_AES));
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+ //11.将字符串返回
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+ return AES_encode;
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ //如果有错就返加nulll
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+ return null;
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+ }
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+
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+ /**
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+ * 解密
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+ * 解密过程：
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+ * 1.同加密1-4步
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+ * 2.将加密后的字符串反纺成byte[]数组
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+ * 3.将加密内容解密
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+ */
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+ public static String AESDncode(String encodeRules, String content) {
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+ try {
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+ //1.构造**生成器，指定为AES算法,不区分大小写
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+ KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
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+ //2.根据ecnodeRules规则初始化**生成器
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+ //生成一个128位的随机源,根据传入的字节数组
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+ keyGenerator.init(128, new SecureRandom(encodeRules.getBytes()));
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+ //3.产生原始对称**
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+ SecretKey original_key = keyGenerator.generateKey();
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+ //4.获得原始对称**的字节数组
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+ byte[] raw = original_key.getEncoded();
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+ //5.根据字节数组生成AES**
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+ SecretKey key = new SecretKeySpec(raw, "AES");
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+ //6.根据指定算法AES自成密码器
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+ Cipher cipher = Cipher.getInstance("AES");
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+ //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
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+ cipher.init(Cipher.DECRYPT_MODE, key);
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+ //8.将加密并编码后的内容解码成字节数组
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+ byte[] byte_content = new BASE64Decoder().decodeBuffer(content);
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+ /*
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+ * 解密
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+ */
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+ byte[] byte_decode = cipher.doFinal(byte_content);
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+ String AES_decode = new String(byte_decode, "utf-8");
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+ return AES_decode;
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ //如果有错就返加nulll
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+ return null;
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+ }
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+
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+ public static void main(String[] args) {
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+ String str = SecretKeyUtil.AESEncode("3fc674da58", "2022-10-20 - 2022-10-29/b29c94d72ee74c6d94b573d90020ea59");
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+ /*
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+ * 加密
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+ */
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+ System.out.println("加密后的密文是:" + str);
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+
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+ /*
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+ * 解密
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+ */
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+ System.out.println("解密后的明文是:" + SecretKeyUtil.AESDncode("3fc674da58", str));
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+ }
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+}
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limeng