upload settingcrypt.py
This commit is contained in:
parent
38993e9555
commit
a6a7f9126e
70
settingcrypt.py
Normal file
70
settingcrypt.py
Normal file
@ -0,0 +1,70 @@
|
||||
"""
|
||||
settingcrypt - Encrypt/decrypt setting.txt.
|
||||
Interactive Python version of the setting.txt encryption
|
||||
code from Wiibrew.
|
||||
|
||||
Copyright (c) 2023 Emily Daemon
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
"""
|
||||
import argparse
|
||||
|
||||
DEBUG = False
|
||||
|
||||
parser = argparse.ArgumentParser(
|
||||
prog="settingcrypt",
|
||||
description="Encrypt/decrypt setting.txt.")
|
||||
parser.add_argument(
|
||||
"input",
|
||||
help="Input filename. Set to - for stdin",
|
||||
type=argparse.FileType("rb"))
|
||||
parser.add_argument(
|
||||
"output",
|
||||
help="Output filename. Set to - for stdout.",
|
||||
type=argparse.FileType("wb"))
|
||||
args = parser.parse_args()
|
||||
|
||||
def hushprint(text):
|
||||
"""Debug print function."""
|
||||
if DEBUG:
|
||||
print(text)
|
||||
|
||||
def scrypt(buf: bytes) -> bytes:
|
||||
"""
|
||||
Encrypt a bytes object. Returns a bytes object.
|
||||
Python rewrite of the following:
|
||||
https://wiibrew.org/wiki//title/00000001/00000002/data/setting.txt#Encryption
|
||||
"""
|
||||
buf_arr = bytearray(buf)
|
||||
key = 0x73B5DBFA
|
||||
buf_crypted = []
|
||||
|
||||
for byte in buf_arr:
|
||||
byte ^= key & 0xff
|
||||
key = (key << 1) | (key >> 31)
|
||||
buf_crypted.append(byte)
|
||||
|
||||
return bytes(buf_crypted)
|
||||
|
||||
input_file = args.input.read()
|
||||
hushprint(f"Encrypting {args.input.name}.")
|
||||
decoded = scrypt(input_file)
|
||||
hushprint(f"Success. Writing to {args.output.name}.")
|
||||
args.output.write(decoded)
|
||||
hushprint("Success.")
|
Loading…
Reference in New Issue
Block a user