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Password protected patches #105

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Password protected patches #105

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ada30e4
Add password protection option to patch files
Jun 13, 2026
43d468e
Change function name
Jun 13, 2026
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17 changes: 16 additions & 1 deletion __init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,7 @@
from .utils.slim import is_slim_version, load_package, get_package_toc, slim_init

from .utils.hashing import murmur64_hash
from .utils.hashing import murmur32_hash
from .utils.memoryStream import MemoryStream
from .utils.logger import PrettyPrint
from .utils.constants import *
Expand Down Expand Up @@ -122,6 +123,8 @@

Global_previousRandomHash = 0

Global_password = 0

#endregion

#region Common Hashes & Lookups
Expand Down Expand Up @@ -538,7 +541,10 @@ def Serialize(self, TocFile: MemoryStream, Index=0):
self.Unknown1 = TocFile.uint64(self.Unknown1)
self.Unknown2 = TocFile.uint64(self.Unknown2)
self.TocDataSize = TocFile.uint32(len(self.TocData))
self.StreamSize = TocFile.uint32(len(self.StreamData))
if TocFile.IsWriting():
self.StreamSize = TocFile.uint32(len(self.StreamData) ^ Global_password)
else:
self.StreamSize = TocFile.uint32(len(self.StreamData)) ^ Global_password
self.GpuResourceSize = TocFile.uint32(len(self.GpuData))
self.Unknown3 = TocFile.uint32(self.Unknown3)
self.Unknown4 = TocFile.uint32(self.Unknown4)
Expand Down Expand Up @@ -4453,6 +4459,13 @@ def ChangeSearchString(self, context):
for item in list_data:
item.item_visible = not all([flag == 0 for flag in flt_flags])
break

def ChangePatchPassword(self, context):
global Global_password
if self.PatchPassword == "":
Global_password = 0
if self.PatchPassword != "":
Global_password = murmur32_hash(self.PatchPassword.encode())

class Hd2ToolPanelSettings(PropertyGroup):
# Patches
Expand Down Expand Up @@ -4488,6 +4501,7 @@ class Hd2ToolPanelSettings(PropertyGroup):

# Tools
EnableTools : BoolProperty(name="Special Tools", description = "Enable advanced SDK Tools", default = False)
PatchPassword : StringProperty(name="Patch Password", description="Password to use when saving/loading patch files", default="", update=ChangePatchPassword)
UnloadEmptyArchives : BoolProperty(name="Unload Empty Archives", description="Unload Archives that do not Contain any Textures, Materials, or Meshes", default = True)
DeleteOnLoadArchive : BoolProperty(name="Nuke Files on Archive Load", description="Delete all Textures, Materials, and Meshes in project when selecting a new archive", default = False)
UnloadPatches : BoolProperty(name="Unload Previous Patches", description="Unload Previous Patches when bulk loading")
Expand Down Expand Up @@ -4865,6 +4879,7 @@ def draw(self, context):
row = settings_box.row(); box = row.box(); row = box.grid_flow(columns=1)
#row.label()
row.label(text="WARNING! Developer Tools, Please Know What You Are Doing!")
row.prop(scene.Hd2ToolPanelSettings, "PatchPassword")
row.prop(scene.Hd2ToolPanelSettings, "UnloadEmptyArchives")
row.prop(scene.Hd2ToolPanelSettings, "UnloadPatches")
row.prop(scene.Hd2ToolPanelSettings, "LoadFoundArchives")
Expand Down