diff --git a/Swift.web/Library/WebUtils.cs b/Swift.web/Library/WebUtils.cs
index 21c849e..51c59e4 100644
--- a/Swift.web/Library/WebUtils.cs
+++ b/Swift.web/Library/WebUtils.cs
@@ -70,5 +70,32 @@ namespace Swift.web.Library
                 }
             }
         }
+        public static string EncryptString(string key, string plainText)
+        {
+            byte[] iv = new byte[16];
+            byte[] array;
+
+            using (Aes aes = Aes.Create())
+            {
+                aes.Key = Encoding.UTF8.GetBytes(key);
+                aes.IV = iv;
+
+                ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
+
+                using (MemoryStream memoryStream = new MemoryStream())
+                {
+                    using (CryptoStream cryptoStream = new CryptoStream((Stream)memoryStream, encryptor, CryptoStreamMode.Write))
+                    {
+                        using (StreamWriter streamWriter = new StreamWriter((Stream)cryptoStream))
+                        {
+                            streamWriter.Write(plainText);
+                        }
+
+                        array = memoryStream.ToArray();
+                    }
+                }
+            }
+            return Convert.ToBase64String(array);
+        }
     }
 }
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