From 1b317ae539c6f9a4682c0b50896c27cbff42d765 Mon Sep 17 00:00:00 2001
From: morkt <muvluv.ru@gmail.com>
Date: Thu, 8 Sep 2016 17:55:34 +0400
Subject: [PATCH] (KiriKiri): another encryption scheme.

---
 ArcFormats/KiriKiri/CryptAlgorithms.cs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/ArcFormats/KiriKiri/CryptAlgorithms.cs b/ArcFormats/KiriKiri/CryptAlgorithms.cs
index ea3d6e9f..4d94ad6a 100644
--- a/ArcFormats/KiriKiri/CryptAlgorithms.cs
+++ b/ArcFormats/KiriKiri/CryptAlgorithms.cs
@@ -742,4 +742,27 @@ namespace GameRes.Formats.KiriKiri
             }
         }
     }
+
+    [Serializable]
+    public class HaikuoCrypt : ICrypt
+    {
+        public override byte Decrypt (Xp3Entry entry, long offset, byte value)
+        {
+            return (byte)(value ^ entry.Hash ^ (entry.Hash >> 8));
+        }
+
+        public override void Decrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
+        {
+            byte key = (byte)(entry.Hash ^ (entry.Hash >> 8));
+            for (int i = 0; i < count; ++i)
+            {
+                values[pos+i] ^= key;
+            }
+        }
+
+        public override void Encrypt (Xp3Entry entry, long offset, byte[] values, int pos, int count)
+        {
+            Decrypt (entry, offset, values, pos, count);
+        }
+    }
 }