mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 23:12:32 +00:00
977ee439d7
These fields are used for EAX12 and EX6250v2 series, and perhaps other
devices. Compatibility is preserved with the WAX202 and WAX206.
In addition, adds the related vars to DEVICE_VARS so that the variables
work correctly with multiple devices.
References in GPL source:
https://www.downloads.netgear.com/files/GPL/EAX12_EAX11v2_EAX15v2_GPL_V1.0.3.34_src.tar.gz
* tools/imgencoder/src/gj_enc.c
Contains code that generates the encrypted image.
Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
(cherry picked from commit 0a1ebccc87)
80 lines
2.7 KiB
Python
Executable File
80 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import argparse
|
|
import re
|
|
import struct
|
|
import subprocess
|
|
import zlib
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser()
|
|
parser.add_argument('--input-file', type=str, required=True)
|
|
parser.add_argument('--output-file', type=str, required=True)
|
|
parser.add_argument('--model', type=str, required=True)
|
|
parser.add_argument('--region', type=str, required=True)
|
|
parser.add_argument('--version', type=str, required=True)
|
|
parser.add_argument('--hw-id-list', type=str)
|
|
parser.add_argument('--model-list', type=str)
|
|
parser.add_argument('--encryption-block-size', type=str, required=True)
|
|
parser.add_argument('--openssl-bin', type=str, required=True)
|
|
parser.add_argument('--key', type=str, required=True)
|
|
parser.add_argument('--iv', type=str, required=True)
|
|
args = parser.parse_args()
|
|
|
|
assert re.match(r'V[0-9]\.[0-9]\.[0-9]\.[0-9]',
|
|
args.version), 'Version must start with Vx.x.x.x'
|
|
encryption_block_size = int(args.encryption_block_size, 0)
|
|
assert (encryption_block_size > 0 and encryption_block_size % 16 ==
|
|
0), 'Encryption block size must be a multiple of the AES block size (16)'
|
|
|
|
hw_id_list = args.hw_id_list.split(';') if args.hw_id_list else []
|
|
model_list = args.model_list.split(';') if args.model_list else []
|
|
hw_info = ';'.join(hw_id_list + model_list)
|
|
|
|
image = open(args.input_file, 'rb').read()
|
|
image_enc = []
|
|
for i in range(0, len(image), encryption_block_size):
|
|
chunk = image[i:i + encryption_block_size]
|
|
chunk += b'\x00' * ((-len(chunk)) % 16) # pad to AES block size (16)
|
|
res = subprocess.run([
|
|
args.openssl_bin,
|
|
'enc',
|
|
'-aes-256-cbc',
|
|
'-nosalt',
|
|
'-nopad',
|
|
'-K', args.key,
|
|
'-iv', args.iv
|
|
],
|
|
check=True, input=chunk, stdout=subprocess.PIPE)
|
|
image_enc.append(res.stdout)
|
|
image_enc = b''.join(image_enc)
|
|
|
|
image_with_header = struct.pack(
|
|
'>32s32s64s64sIBBB13s200s100s12sII',
|
|
args.model.encode('ascii'),
|
|
args.region.encode('ascii'),
|
|
args.version.encode('ascii'),
|
|
b'Thu Jan 1 00:00:00 1970', # static date for reproducibility
|
|
0, # product hw model
|
|
0, # model index
|
|
len(hw_id_list),
|
|
len(model_list),
|
|
b'', # reserved
|
|
hw_info.encode('ascii'),
|
|
b'', # reserved
|
|
b'encrpted_img',
|
|
len(image_enc),
|
|
encryption_block_size,
|
|
) + image_enc
|
|
|
|
checksum = zlib.crc32(image_with_header, 0xffffffff) ^ 0xffffffff
|
|
|
|
with open(args.output_file, 'wb') as outfile:
|
|
outfile.write(image_with_header)
|
|
outfile.write(struct.pack('>I', checksum))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|