mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-23 06:48:16 +00:00
114 lines
3.5 KiB
Python
Executable File
114 lines
3.5 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import binascii
|
|
import click
|
|
import pyblake2
|
|
|
|
from trezorlib import ed25519raw, ed25519cosi
|
|
|
|
|
|
indexmap = {
|
|
'bootloader': 0,
|
|
'vendorheader': 1,
|
|
'firmware': 2,
|
|
}
|
|
|
|
|
|
def get_trezor():
|
|
from trezorlib.client import TrezorClient
|
|
from trezorlib.transport_hid import HidTransport
|
|
devices = HidTransport.enumerate()
|
|
if len(devices) > 0:
|
|
return TrezorClient(devices[0])
|
|
else:
|
|
raise Exception('No TREZOR found')
|
|
|
|
|
|
@click.group()
|
|
def cli():
|
|
pass
|
|
|
|
|
|
@cli.command(help='')
|
|
@click.argument('index', type=click.Choice(indexmap.keys()))
|
|
@click.argument('filename')
|
|
@click.argument('seckey', required=False)
|
|
def commit(index, filename, seckey):
|
|
index = indexmap[index]
|
|
data = open(filename, 'rb').read()
|
|
digest = pyblake2.blake2s(data).digest()
|
|
ctr = 0
|
|
if seckey:
|
|
sk = binascii.unhexlify(seckey)
|
|
pk = ed25519raw.publickey(sk)
|
|
_, R = ed25519cosi.get_nonce(sk, digest, ctr)
|
|
else:
|
|
t = get_trezor()
|
|
path = "10018'/%d'" % index
|
|
print('commiting to hash %s with path %s' % (binascii.hexlify(digest).decode(), path))
|
|
commit = t.cosi_commit(t.expand_path(path), digest)
|
|
pk = commit.pubkey
|
|
R = commit.commitment
|
|
print('%s+%s' % (binascii.hexlify(pk).decode(), binascii.hexlify(R).decode()))
|
|
|
|
|
|
@cli.command(help='')
|
|
@click.argument('commits', nargs=-1)
|
|
def global_commit(commits):
|
|
if len(commits) < 1:
|
|
raise Exception('Need to provide at least one commit')
|
|
pk, R = [], []
|
|
for c in commits:
|
|
a, b = c.split('+')
|
|
pk.append(binascii.unhexlify(a))
|
|
R.append(binascii.unhexlify(b))
|
|
global_pk = ed25519cosi.combine_keys(pk)
|
|
global_R = ed25519cosi.combine_keys(R)
|
|
print('%s+%s' % (binascii.hexlify(global_pk).decode(), binascii.hexlify(global_R).decode()))
|
|
|
|
|
|
@cli.command(help='')
|
|
@click.argument('index', type=click.Choice(indexmap.keys()))
|
|
@click.argument('filename')
|
|
@click.argument('global_commit')
|
|
@click.argument('seckey', required=False)
|
|
def sign(index, filename, global_commit, seckey):
|
|
index = indexmap[index]
|
|
data = open(filename, 'rb').read()
|
|
digest = pyblake2.blake2s(data).digest()
|
|
global_pk, global_R = [binascii.unhexlify(x) for x in global_commit.split('+')]
|
|
ctr = 0
|
|
if seckey:
|
|
sk = binascii.unhexlify(seckey)
|
|
r, _ = ed25519cosi.get_nonce(sk, digest, ctr)
|
|
h = ed25519raw.H(sk)
|
|
b = ed25519raw.b
|
|
a = 2 ** (b - 2) + sum(2 ** i * ed25519raw.bit(h, i) for i in range(3, b - 2))
|
|
S = (r + ed25519raw.Hint(global_R + global_pk + digest) * a) % ed25519raw.l
|
|
sig = ed25519raw.encodeint(S)
|
|
else:
|
|
t = get_trezor()
|
|
path = "10018'/%d'" % index
|
|
print('signing hash %s with path %s' % (binascii.hexlify(digest).decode(), path))
|
|
signature = t.cosi_sign(t.expand_path(path), digest, global_R, global_pk)
|
|
sig = signature.signature
|
|
print(binascii.hexlify(sig).decode())
|
|
|
|
|
|
@cli.command(help='')
|
|
@click.argument('filename')
|
|
@click.argument('global_commit')
|
|
@click.argument('signatures', nargs=-1)
|
|
def global_sign(filename, global_commit, signatures):
|
|
data = open(filename, 'rb').read()
|
|
digest = pyblake2.blake2s(data).digest()
|
|
global_pk, global_R = [binascii.unhexlify(x) for x in global_commit.split('+')]
|
|
signatures = [binascii.unhexlify(x) for x in signatures]
|
|
sig = ed25519cosi.combine_sig(global_R, signatures)
|
|
ed25519raw.checkvalid(sig, digest, global_pk)
|
|
print(binascii.hexlify(sig).decode())
|
|
|
|
|
|
if __name__ == '__main__':
|
|
cli()
|