From a27a9d8a5cc85dcd2dc7ee586eb9304046870d68 Mon Sep 17 00:00:00 2001
From: scientificworld <scientificworld@users.noreply.github.com>
Date: Wed, 31 Dec 2025 02:42:48 +0800
Subject: [PATCH] feat: support unencrypted LIBP archive

---
 ArcFormats/Malie/ArcLIB.cs          | 2 +-
 ArcFormats/Malie/MalieEncryption.cs | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/ArcFormats/Malie/ArcLIB.cs b/ArcFormats/Malie/ArcLIB.cs
index 38e4f672..2ec9d039 100644
--- a/ArcFormats/Malie/ArcLIB.cs
+++ b/ArcFormats/Malie/ArcLIB.cs
@@ -150,7 +150,7 @@ namespace GameRes.Formats.Malie
             var header = new byte[0x10];
             foreach (var scheme in KnownSchemes.Values)
             {
-                var decryptor = scheme.CreateDecryptor();
+                var decryptor = file.View.AsciiEqual (0, "LIB") ? new NoOpDecryptor() : scheme.CreateDecryptor();
                 ReadEncrypted (file.View, decryptor, 0, header, 0, 0x10);
                 ILibIndexReader reader;
                 if (Binary.AsciiEqual (header, 0, "LIBP"))
diff --git a/ArcFormats/Malie/MalieEncryption.cs b/ArcFormats/Malie/MalieEncryption.cs
index 9e8edd55..af26c471 100644
--- a/ArcFormats/Malie/MalieEncryption.cs
+++ b/ArcFormats/Malie/MalieEncryption.cs
@@ -35,6 +35,13 @@ namespace GameRes.Formats.Malie
         void DecryptBlock (long block_offset, byte[] buffer, int index);
     }
 
+    public class NoOpDecryptor : IMalieDecryptor
+    {
+        public void DecryptBlock (long block_offset, byte[] buffer, int index)
+        {
+        }
+    }
+
     public class CamelliaDecryptor : IMalieDecryptor
     {
         Camellia   m_enc;