lock unitypy version and fix IV and salt length

geki/calc_title_server_enc_key.py

@@ -1,3 +1,9 @@
+# /// script
+# requires-python = ">=3.10"
+# dependencies = [
+#     "unitypy==1.21.2",
+# ]
+# ///
 import argparse
 from hashlib import blake2b
 from pathlib import Path
@@ -36,7 +42,16 @@ with (cast(Path, args.mu3_data_path) / "resources.assets").open("rb") as f:
 
         data = cast(TextAsset, object.read())
 
-        if data.name in FILE_MAP:
-            key = blake2b(data.m_Script, digest_size=32, key=args.key_iv_digest_fixed).hexdigest()
+        if data.m_Name in FILE_MAP:
+            key = blake2b(
+                data.m_Script.encode("utf-8", "surrogateescape"),
+                digest_size=32,
+                key=args.key_iv_digest_fixed
+            ).digest()
 
-            print(f"{FILE_MAP[data.name]}: {key}")
+            if data.m_Name == "noise1":
+                key = key[:16]
+            elif data.m_Name == "noise2":
+                key = key[:8]
+
+            print(f"{FILE_MAP[data.name]}: {key.hex()}")