mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-23 07:58:09 +00:00
56 lines
1.4 KiB
Python
Executable File
56 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
import sys
|
|
import struct
|
|
import binascii
|
|
|
|
# encode vendor name, add length byte and padding to multiple of 4
|
|
|
|
|
|
def encode_vendor(vname):
|
|
vbin = vname.encode('utf-8')
|
|
vbin = struct.pack('<B', len(vbin)) + vbin
|
|
vbin += b'\0' * (-len(vbin) & 3)
|
|
return vbin
|
|
|
|
|
|
def encode_pubkey(pubkey):
|
|
if len(pubkey) != 64:
|
|
raise Exception('Wrong public key length')
|
|
return binascii.unhexlify(pubkey)
|
|
|
|
|
|
def main():
|
|
if len(sys.argv) < 7:
|
|
print('Usage build_vendorheader "pubkey1hex:pubkey2hex:..." m version vendortrust vendorname vendorimage.toif vendorheader.bin')
|
|
return 1
|
|
|
|
keys = [encode_pubkey(x) for x in sys.argv[1].split(':')]
|
|
m = int(sys.argv[2])
|
|
(vmajor, vminor) = [int(x) for x in sys.argv[3].split('.')]
|
|
vtrust = int(sys.argv[4])
|
|
vname = sys.argv[5]
|
|
ifn = sys.argv[6]
|
|
ofn = sys.argv[7]
|
|
if not ifn.endswith('.toif'):
|
|
print('Must provide TOIF file')
|
|
return 2
|
|
|
|
expiry = 0
|
|
vheader = b'TRZV' + \
|
|
struct.pack('<IIBBBBB', 0, expiry, vmajor, vminor, m, len(keys), vtrust)
|
|
vheader += 15 * b'\0'
|
|
for k in keys:
|
|
vheader += k
|
|
vheader += encode_vendor(vname) + open(ifn, 'rb').read()
|
|
padding = 65 + (-len(vheader) - 65) & 511
|
|
vheader += b'\0' * padding
|
|
|
|
# put in length
|
|
vheader = vheader[0:4] + struct.pack('<I', len(vheader)) + vheader[8:]
|
|
|
|
with open(ofn, 'wb') as f:
|
|
f.write(vheader)
|
|
|
|
|
|
main()
|