Add IsEncrypted method (#45)

mixcore · Sep 17, 2024 · 97badb5 · 97badb5
1 parent 712f1fb
commit 97badb5
Showing 1 changed file with 34 additions and 5 deletions.
diff --git a/src/mix.heart/Helpers/AesEncryptionHelper.cs b/src/mix.heart/Helpers/AesEncryptionHelper.cs
@@ -13,6 +13,7 @@ public static string EncryptString(string text, string iCompleteEncodedKey, Enco
             {
                 return default;
             }
+
             string[] keyStrings =
                 Encoding.UTF8.GetString(Convert.FromBase64String(iCompleteEncodedKey))
                     .Split(',');
@@ -32,14 +33,15 @@ public static string DecryptString(string cipherText, string iCompleteEncodedKey
             return DecryptString(cipherText, key, iv, encoding ?? Encoding.UTF8);
         }
 
-        public static string EncryptString(string text, string keyString, string ivString,Encoding encoding = default)
+        public static string EncryptString(string text, string keyString, string ivString, Encoding encoding = default)
         {
             var iv = Encoding.UTF8.GetBytes(ivString);
             var key = Encoding.UTF8.GetBytes(keyString);
             return EncryptString(text, key, iv, encoding ?? Encoding.UTF8);
         }
 
-        public static string DecryptString(string cipherText, string keyString, string ivString, Encoding encoding = default)
+        public static string DecryptString(string cipherText, string keyString, string ivString,
+            Encoding encoding = default)
         {
             var iv = Encoding.UTF8.GetBytes(ivString);
             var key = Encoding.UTF8.GetBytes(keyString);
@@ -63,12 +65,12 @@ private static string EncryptString(string plainText, byte[] key, byte[] iv, Enc
                     {
                         swEncrypt.Write(plainText);
                     }
+
                     cipherText = msEncrypt.ToArray();
                 }
             }
-            return Convert.ToBase64String(cipherText);
-
 
+            return Convert.ToBase64String(cipherText);
         }
 
         private static string DecryptString(string cipherText, byte[] key, byte[] iv, Encoding encoding)
@@ -100,5 +102,32 @@ public static string GenerateCombinedKeys()
 
             return Convert.ToBase64String(Encoding.UTF8.GetBytes(completeKey));
         }
+
+        public static bool IsEncrypted(string input, string iCompleteEncodedKey)
+        {
+            if (string.IsNullOrWhiteSpace(input))
+            {
+                return false;
+            }
+
+            try
+            {
+                var cipherBytes = Convert.FromBase64String(input);
+            }
+            catch (FormatException)
+            {
+                return false;
+            }
+
+            try
+            {
+                DecryptString(input, iCompleteEncodedKey);
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
     }
-}
+}