From 8983f14f5c58d916fd4c2673285d2838477af51f Mon Sep 17 00:00:00 2001
From: Luiz Lopes <luizinrc@hotmail.com>
Date: Thu, 1 Feb 2024 12:29:27 -0300
Subject: [PATCH] Update UpdateList.cs

add encrypt
---
 PangLib.UpdateList/UpdateList.cs | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/PangLib.UpdateList/UpdateList.cs b/PangLib.UpdateList/UpdateList.cs
index a827fd2..6548141 100644
--- a/PangLib.UpdateList/UpdateList.cs
+++ b/PangLib.UpdateList/UpdateList.cs
@@ -31,7 +31,7 @@ public UpdateList(string filePath)
         ///
         /// Saves the parsed updatelist in the Document instance attribute
         /// </summary>
-        public void Parse()
+        public void Parse(bool decrypt = true)
         {
             if (DecryptionKey == null)
             {
@@ -39,15 +39,27 @@ public void Parse()
             }
 
             Span<byte> updateList = File.ReadAllBytes(FilePath);
-
-            for (int i = 0; i < updateList.Length; i += 8)
+if(decrypt)
+{      for (int i = 0; i < updateList.Length; i += 8)
             {
                 Span<byte> chunk = updateList.Slice(i, 8);
                 Span<uint> decrypted = XTEA.Decipher(16, MemoryMarshal.Cast<byte, uint>(chunk).ToArray(), DecryptionKey);
                 Span<byte> resource = MemoryMarshal.AsBytes(decrypted);
                 resource.CopyTo(chunk);
             }
+}
+            else
+            {
 
+               var newArray = new byte[updateList.Length - updateList.Length % 8 + 8];
+		updateList.CopyTo(newArray);
+		updateList = newArray;
+		for (int i = 0; i < updateList.Length; i += 8)
+		{
+			Span<byte> chunk = updateList.Slice(i, 8);
+			MemoryMarshal.AsBytes<uint>(XTEA.Encipher(16, MemoryMarshal.Cast<byte, uint>(chunk).ToArray(), DecryptionKey)).CopyTo(chunk);
+		}
+            }
             Document = Encoding.UTF8.GetString(updateList.ToArray());
         }