From ab849f796bdc17236a95ea5fe5c166fb8f24a75c Mon Sep 17 00:00:00 2001
From: sws <15810472099@163.com>
Date: 星期六, 26 十一月 2022 16:12:02 +0800
Subject: [PATCH] 1
---
src/main/java/com/lf/server/helper/AesHelper.java | 129 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 129 insertions(+), 0 deletions(-)
diff --git a/src/main/java/com/lf/server/helper/AesHelper.java b/src/main/java/com/lf/server/helper/AesHelper.java
new file mode 100644
index 0000000..78efbfc
--- /dev/null
+++ b/src/main/java/com/lf/server/helper/AesHelper.java
@@ -0,0 +1,129 @@
+package com.lf.server.helper;
+
+import javax.crypto.Cipher;
+import javax.crypto.KeyGenerator;
+import javax.crypto.spec.SecretKeySpec;
+import java.util.Base64;
+
+/**
+ * AES鍔犲瘑甯姪
+ * @author WWW
+ */
+@SuppressWarnings("restriction")
+public class AesHelper {
+ /**
+ * 瀵嗛挜闀垮害蹇呴』鏄�16
+ */
+ private static final String DEFAULT_KEY = "A#s_lF_sErve_k.y";
+
+ private static final String KEY_ALGORITHM = "AES";
+
+ /**
+ * 绠楁硶
+ */
+ private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";
+
+ /**
+ * aes瑙ｅ瘑
+ *
+ * @param encrypt 鍐呭
+ * @return
+ * @throws Exception
+ */
+ public static String decrypt(String encrypt) throws Exception {
+ return decrypt(encrypt, DEFAULT_KEY);
+ }
+
+ /**
+ * aes鍔犲瘑
+ *
+ * @param content 鍐呭
+ * @return
+ * @throws Exception
+ */
+ public static String encrypt(String content) throws Exception {
+ return encrypt(content, DEFAULT_KEY);
+ }
+
+ /**
+ * base 64 encode
+ *
+ * @param bytes 寰呯紪鐮佺殑byte[]
+ * @return 缂栫爜鍚庣殑base64 code
+ */
+ private static String base64Encode(byte[] bytes) {
+ return Base64.getEncoder().encodeToString(bytes);
+ }
+
+ /**
+ * base 64 decode
+ *
+ * @param base64Code 寰呰В鐮佺殑base64 code
+ * @return 瑙ｇ爜鍚庣殑byte[]
+ * @throws Exception
+ */
+ private static byte[] base64Decode(String base64Code) {
+ return StringHelper.isEmpty(base64Code) ? null : Base64.getDecoder().decode(base64Code);
+ }
+
+ /**
+ * AES鍔犲瘑
+ *
+ * @param content 寰呭姞瀵嗙殑鍐呭
+ * @param encryptKey 鍔犲瘑瀵嗛挜
+ * @return 鍔犲瘑鍚庣殑byte[]
+ * @throws Exception
+ */
+ private static byte[] aesEncryptToBytes(String content, String encryptKey) throws Exception {
+ // KeyGenerator kGen = KeyGenerator.getInstance(KEY_ALGORITHM)
+ // kGen.init(128)
+
+ Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
+ cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), KEY_ALGORITHM));
+
+ return cipher.doFinal(content.getBytes("utf-8"));
+ }
+
+ /**
+ * AES鍔犲瘑涓篵ase 64 code
+ *
+ * @param content 寰呭姞瀵嗙殑鍐呭
+ * @param encryptKey 鍔犲瘑瀵嗛挜
+ * @return 鍔犲瘑鍚庣殑base 64 code
+ * @throws Exception
+ */
+ public static String encrypt(String content, String encryptKey) throws Exception {
+ return base64Encode(aesEncryptToBytes(content, encryptKey));
+ }
+
+ /**
+ * 灏哹ase 64 code AES瑙ｅ瘑
+ *
+ * @param encryptStr 寰呰В瀵嗙殑base 64 code
+ * @param decryptKey 瑙ｅ瘑瀵嗛挜
+ * @return 瑙ｅ瘑鍚庣殑string
+ * @throws Exception
+ */
+ public static String decrypt(String encryptStr, String decryptKey) throws Exception {
+ return StringHelper.isEmpty(encryptStr) ? null : aesDecryptByBytes(base64Decode(encryptStr), decryptKey);
+ }
+
+ /**
+ * AES瑙ｅ瘑
+ *
+ * @param encryptBytes 寰呰В瀵嗙殑byte[]
+ * @param decryptKey 瑙ｅ瘑瀵嗛挜
+ * @return 瑙ｅ瘑鍚庣殑String
+ * @throws Exception
+ */
+ private static String aesDecryptByBytes(byte[] encryptBytes, String decryptKey) throws Exception {
+ // KeyGenerator kGen = KeyGenerator.getInstance(KEY_ALGORITHM)
+ // kGen.init(128)
+
+ Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
+ cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), KEY_ALGORITHM));
+ byte[] decryptBytes = cipher.doFinal(encryptBytes);
+
+ return new String(decryptBytes);
+ }
+}
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