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+/*
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+ *Copyright © 2018 anji-plus
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+ *安吉加加信息技术有限公司
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+ *http://www.anji-plus.com
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+ *All rights reserved.
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+ */
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+package com.anjiplus.template.gaea.business.util;
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+
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+
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+import org.apache.commons.lang3.StringUtils;
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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.spec.SecretKeySpec;
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+import java.math.BigInteger;
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+import java.util.Base64;
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+
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+
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+public class AESUtil {
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+ //算法
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+ private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";
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+
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+ private static final String AES_KEY = "AnjiPLUSAjReport";
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+
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+
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+ /**
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+ * 获取随机key
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+ *
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+ * @return
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+ */
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+ public static String getKey() {
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+ return AES_KEY;
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+ }
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+
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+
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+ /**
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+ * 将byte[]转为各种进制的字符串
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+ *
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+ * @param bytes byte[]
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+ * @param radix 可以转换进制的范围,从Character.MIN_RADIX到Character.MAX_RADIX,超出范围后变为10进制
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+ * @return 转换后的字符串
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+ */
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+ public static String binary(byte[] bytes, int radix) {
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+ return new BigInteger(1, bytes).toString(radix);// 这里的1代表正数
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+ }
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+
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+ /**
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+ * base 64 encode
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+ *
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+ * @param bytes 待编码的byte[]
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+ * @return 编码后的base 64 code
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+ */
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+ public static String base64Encode(byte[] bytes) {
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+ //return Base64.encodeBase64String(bytes);
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+ return Base64.getEncoder().encodeToString(bytes);
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+ }
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+
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+ /**
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+ * base 64 decode
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+ *
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+ * @param base64Code 待解码的base 64 code
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+ * @return 解码后的byte[]
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+ * @throws Exception
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+ */
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+ public static byte[] base64Decode(String base64Code) throws Exception {
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+ Base64.Decoder decoder = Base64.getDecoder();
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+ return StringUtils.isEmpty(base64Code) ? null : decoder.decode(base64Code);
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+ }
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+
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+
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+ /**
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+ * AES加密
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+ *
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+ * @param content 待加密的内容
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+ * @param encryptKey 加密密钥
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+ * @return 加密后的byte[]
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+ * @throws Exception
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+ */
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+ public static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception {
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+ KeyGenerator kgen = KeyGenerator.getInstance("AES");
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+ kgen.init(128);
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+ Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
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+ cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES"));
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+
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+ return cipher.doFinal(content.getBytes("utf-8"));
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+ }
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+
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+
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+ /**
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+ * AES加密为base 64 code
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+ *
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+ * @param content 待加密的内容
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+ * @param encryptKey 加密密钥
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+ * @return 加密后的base 64 code
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+ * @throws Exception
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+ */
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+ public static String aesEncrypt(String content, String encryptKey) throws Exception {
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+ if (StringUtils.isBlank(encryptKey)) {
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+ return content;
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+ }
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+ return base64Encode(aesEncryptToBytes(content, encryptKey));
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+ }
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+
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+ /**
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+ * AES解密
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+ *
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+ * @param encryptBytes 待解密的byte[]
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+ * @param decryptKey 解密密钥
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+ * @return 解密后的String
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+ * @throws Exception
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+ */
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+ public static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception {
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+ KeyGenerator kgen = KeyGenerator.getInstance("AES");
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+ kgen.init(128);
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+
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+ Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
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+ cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"));
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+ byte[] decryptBytes = cipher.doFinal(encryptBytes);
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+ return new String(decryptBytes);
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+ }
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+
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+
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+ /**
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+ * 将base 64 code AES解密
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+ *
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+ * @param encryptStr 待解密的base 64 code
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+ * @param decryptKey 解密密钥
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+ * @return 解密后的string
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+ * @throws Exception
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+ */
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+ public static String aesDecrypt(String encryptStr, String decryptKey) throws Exception {
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+ if (StringUtils.isBlank(decryptKey)) {
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+ return encryptStr;
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+ }
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+ return StringUtils.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey);
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+ }
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+
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+ /**
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+ * 测试
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+ */
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+ public static void main(String[] args) throws Exception {
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+ String randomString = getKey();
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+ String content = "report";
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+ System.out.println("加密前:" + content);
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+ System.out.println("加密密钥和解密密钥:" + randomString);
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+ String encrypt = aesEncrypt(content, randomString);
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+ System.out.println("加密后:" + encrypt);
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+ String decrypt = aesDecrypt(encrypt, randomString);
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+ System.out.println("解密后:" + decrypt);
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+ }
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+
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+}
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