diff --git a/UserClass/AES.cs b/UserClass/AES.cs
new file mode 100644
index 0000000..a344ab1
--- /dev/null
+++ b/UserClass/AES.cs
@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Runtime.Intrinsics.X86;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace SunlightAggregationManager.UserClass
+{
+    public class AES
+    {
+        public static string AesEncipher(string Key, string dat) //加密
+        {
+            //压缩
+            byte[] plainBytes = Compress( Encoding.UTF8.GetBytes(dat));
+
+            using var sha256 = System.Security.Cryptography.SHA256.Create();
+            using var aes = System.Security.Cryptography.Aes.Create();
+
+            aes.Key = sha256.ComputeHash(Encoding.UTF8.GetBytes(Key));
+            aes.Mode = CipherMode.CBC;
+            aes.Padding = PaddingMode.PKCS7;
+            aes.GenerateIV(); // 生成随机 IV
+
+            using var enc = aes.CreateEncryptor();
+            byte[] cipherBytes = enc.TransformFinalBlock(plainBytes, 0, plainBytes.Length);
+
+            //将 IV (16字节) 和 密文 拼接成一个完整的字节数组
+            byte[] combinedBytes = new byte[aes.IV.Length + cipherBytes.Length];
+            Buffer.BlockCopy(aes.IV, 0, combinedBytes, 0, aes.IV.Length);
+            Buffer.BlockCopy(cipherBytes, 0, combinedBytes, aes.IV.Length, cipherBytes.Length);
+
+            return Convert.ToBase64String(combinedBytes);
+        }
+
+        public static string AesDecrypt(string Key, string dat)//解密
+        {
+            // 解码Base64
+            byte[] cipherBytes = Convert.FromBase64String(dat);
+
+            using var sha256 = System.Security.Cryptography.SHA256.Create();
+            using var aes = System.Security.Cryptography.Aes.Create();
+
+            aes.Key = sha256.ComputeHash(Encoding.UTF8.GetBytes(Key));
+            aes.Mode = CipherMode.CBC;
+            aes.Padding = PaddingMode.PKCS7;
+            // 从字节数组中提取前 16 字节作为 IV
+            aes.IV = cipherBytes.AsSpan(0, 16).ToArray();
+            using var dec = aes.CreateDecryptor();
+
+            // 解密
+            byte[] bytes = dec.TransformFinalBlock(cipherBytes, 16, cipherBytes.Length - 16);
+            //解压缩并返回
+            return Encoding.UTF8.GetString(Decompress(bytes));
+        }
+
+        // 3. Brotli 压缩辅助方法
+        private static byte[] Compress(byte[] data)
+        {
+            using var output = new MemoryStream();
+            using (var brotli = new BrotliStream(output, CompressionLevel.Optimal))
+            {
+                brotli.Write(data, 0, data.Length);
+            }
+            return output.ToArray();
+        }
+
+        // 4. Brotli 解压辅助方法
+        private static byte[] Decompress(byte[] data)
+        {
+            using var input = new MemoryStream(data);
+            using var brotli = new BrotliStream(input, CompressionMode.Decompress);
+            using var output = new MemoryStream();
+            brotli.CopyTo(output);
+            return output.ToArray();
+        }
+    }
+}