From 2179094303e4dbd127b17c2e08ad6c30efa11df2 Mon Sep 17 00:00:00 2001
From: lifegpc <root@lifegpc.com>
Date: Fri, 10 Apr 2026 10:26:09 +0800
Subject: [PATCH] Add HibikiCrypt (untested)

---
 msg_tool_xp3data/crypt.json                   |  4 ++++
 src/scripts/kirikiri/archive/xp3/crypt/mod.rs | 24 +++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/msg_tool_xp3data/crypt.json b/msg_tool_xp3data/crypt.json
index cbb1f07..55f8d4e 100644
--- a/msg_tool_xp3data/crypt.json
+++ b/msg_tool_xp3data/crypt.json
@@ -1137,6 +1137,10 @@
         "ControlBlockName": "love_laby.bin",
         "Title": "らぶ+らび"
     },
+    "LOVELY x CATION": {
+        "$type": "HibikiCrypt",
+        "Title": "LOVELY×CATION"
+    },
     "Lovesick Puppies -Bokura wa Koi Suru Tame ni Umaretekita-": {
         "$type": "AppliqueCrypt",
         "Title": "LOVESICK PUPPIES -僕らは恋するために生まれてきた- | LOVESICK PUPPIES -我们为了恋爱而诞生-"
diff --git a/src/scripts/kirikiri/archive/xp3/crypt/mod.rs b/src/scripts/kirikiri/archive/xp3/crypt/mod.rs
index 180de1b..e2f7e21 100644
--- a/src/scripts/kirikiri/archive/xp3/crypt/mod.rs
+++ b/src/scripts/kirikiri/archive/xp3/crypt/mod.rs
@@ -170,10 +170,12 @@ enum CryptType {
     AppliqueCrypt,
     TokidokiCrypt,
     SourireCrypt,
+    HibikiCrypt,
 }
 
 #[derive(Clone, Debug, Deserialize)]
 #[serde(rename_all = "PascalCase")]
+#[allow(dead_code)]
 pub struct BaseSchema {
     #[serde(default)]
     hash_after_crypt: bool,
@@ -266,6 +268,7 @@ impl Schema {
             CryptType::AppliqueCrypt => Box::new(AppliqueCrypt::new(self.base.clone())),
             CryptType::TokidokiCrypt => Box::new(TokidokiCrypt::new(self.base.clone())),
             CryptType::SourireCrypt => Box::new(SourireCrypt::new(self.base.clone())),
+            CryptType::HibikiCrypt => Box::new(HibikiCrypt::new(self.base.clone())),
         })
     }
 }
@@ -1048,6 +1051,27 @@ impl<R: Read> Read for SourireCryptReader<R> {
     }
 }
 
+seek_crypt_filehash_key_impl!(HibikiCrypt, HibikiCryptReader<T>);
+
+impl <R: Read> Read for HibikiCryptReader<R> {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        let readed = self.inner.read(buf)?;
+        let key1 = (self.key >> 5) as u8;
+        let key2 = (self.key >> 8) as u8;
+        for (i, t) in (&mut buf[..readed]).iter_mut().enumerate() {
+            let offset = self.seg_start + self.pos + i as u64;
+            let key = if offset <= 0x64 || offset & 4 != 0 {
+                key1
+            } else {
+                key2
+            };
+            *t ^= key;
+        }
+        self.pos += readed as u64;
+        Ok(readed)
+    }
+}
+
 #[test]
 fn test_deserialize_crypt() {
     for (key, schema) in CRYPT_SCHEMA.iter() {