Add XorCrypt (tested game: https://vndb.org/v23388 )

src/scripts/kirikiri/archive/xp3/crypt.json

@@ -35,6 +35,16 @@
         "$type": "HashCrypt",
         "Title": "母奪～禁断の触手相姦～"
     },
+    "Boku no Mirai wa, Koi to Kakin to": {
+        "$type": "XorCrypt",
+        "Key": 227,
+        "Title": "僕の未来は、恋と課金と。～Charge To The Future～ | 我的未来是恋爱与氪金"
+    },
+    "Boku no Mirai wa, Koi to Kakin to [Trial]": {
+        "$type": "XorCrypt",
+        "Key": 49,
+        "Title": "僕の未来は、恋と課金と。～Charge To The Future～ [体験版] | 我的未来是恋爱与氪金 [试用版]"
+    },
     "Custom Reido 4/4+/V": {
         "$type": "HashCrypt",
         "Title": "カスタム隷奴 4/4+/V"
@@ -43,6 +53,11 @@
         "$type": "HashCrypt",
         "Title": "誰もが彼女を狙ってる。 | 众人觊觎的女友"
     },
+    "Deatte 5-fun wa Ore no Mono!": {
+        "$type": "XorCrypt",
+        "Key": 53,
+        "Title": "出会って5分は俺のもの！ 時間停止と不可避な運命 | 5分钟的邂逅！时间停止与不可避免的命运 | 相见5分属于我！时间停止不可避的命运"
+    },
     "Do-M Imouto O-nedari Kojin Lesson": {
         "$type": "HashCrypt",
         "Title": "ドM妹おねだり個人レッスン～私のSEX家庭教師お兄ちゃん～ | 义妹私教辅导~哥哥我是家庭教师"
@@ -170,6 +185,11 @@
         "$type": "HashCrypt",
         "Title": "カホゴな寮母の射精管理 ～ちゃんと我慢してくださいね？～"
     },
+    "Kamidanomi Shisugite Ore no Mirai ga Yabai.": {
+        "$type": "XorCrypt",
+        "Key": 205,
+        "Title": "神頼みしすぎて俺の未来がヤバい。 | 求神太多我的未来糟糕了 | 太依赖咒术的我未来堪忧。"
+    },
     "Kanpeki Seitokaichou no Himitsu no Seiheki": {
         "$type": "HashCrypt",
         "Title": "完璧生徒会長の秘密の性癖 ～高嶺の花の彼女をＭ女に開花させてやる～"
@@ -413,6 +433,16 @@
         "$type": "HashCrypt",
         "Title": "嫁探しが捗りすぎてヤバい。 | 新娘太好找了我很方！"
     },
+    "Yurameku Kokoro ni Michita Sekai de": {
+        "$type": "XorCrypt",
+        "Key": 205,
+        "Title": "ゆらめく心に満ちた世界で、君の夢と欲望は叶うか | 三千心世界，梦终将实现"
+    },
+    "Yuusha to Maou to, Majo no Cafe": {
+        "$type": "XorCrypt",
+        "Key": 205,
+        "Title": "勇者と魔王と、魔女のカフェ"
+    },
     "Zettai Sakusei! Succubus-chan": {
         "$type": "HashCrypt",
         "Title": "絶対搾精！ サキュバスちゃん"

src/scripts/kirikiri/archive/xp3/crypt.rs

@@ -64,6 +64,10 @@ enum CryptType {
     FateCrypt,
     MizukakeCrypt,
     HashCrypt,
+    #[serde(rename_all = "PascalCase")]
+    XorCrypt {
+        key: u8,
+    },
 }
 
 #[derive(Clone, Debug, Deserialize)]
@@ -81,6 +85,7 @@ impl Schema {
             CryptType::FateCrypt => Box::new(FateCrypt::new()),
             CryptType::MizukakeCrypt => Box::new(MizukakeCrypt::new()),
             CryptType::HashCrypt => Box::new(HashCrypt::new()),
+            CryptType::XorCrypt { key } => Box::new(XorCrypt::new(key)),
         }
     }
 }
@@ -358,6 +363,55 @@ impl<R: Read> Read for HashCryptReader<R> {
     }
 }
 
+#[derive(Debug)]
+pub struct XorCrypt {
+    key: u8,
+}
+
+impl XorCrypt {
+    pub fn new(key: u8) -> Self {
+        Self { key }
+    }
+}
+
+impl Crypt for XorCrypt {
+    fn decrypt_supported(&self) -> bool {
+        true
+    }
+    fn decrypt_seek_supported(&self) -> bool {
+        true
+    }
+    fn decrypt<'a>(
+        &self,
+        _entry: &Xp3Entry,
+        cur_seg: &Segment,
+        stream: Box<dyn Read + 'a>,
+    ) -> Result<Box<dyn ReadDebug + 'a>> {
+        Ok(Box::new(XorCryptReader::new(stream, cur_seg, self.key)))
+    }
+    fn decrypt_with_seek<'a>(
+        &self,
+        _entry: &Xp3Entry,
+        cur_seg: &Segment,
+        stream: Box<dyn ReadSeek + 'a>,
+    ) -> Result<Box<dyn ReadSeek + 'a>> {
+        Ok(Box::new(XorCryptReader::new(stream, cur_seg, self.key)))
+    }
+}
+
+seek_reader_key_impl!(XorCryptReader<T>, u8);
+
+impl<R: Read> Read for XorCryptReader<R> {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        let readed = self.inner.read(buf)?;
+        for t in (&mut buf[..readed]).iter_mut() {
+            *t ^= self.key;
+        }
+        self.pos += readed as u64;
+        Ok(readed)
+    }
+}
+
 #[test]
 fn test_deserialize_crypt() {
     for (key, schema) in CRYPT_SCHEMA.iter() {