mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-01 11:58:28 +00:00
134 lines
5.5 KiB
Python
134 lines
5.5 KiB
Python
from common import *
|
|
from trezor.crypto import slip39, random
|
|
from slip39_vectors import vectors
|
|
|
|
def combinations(iterable, r):
|
|
# Taken from https://docs.python.org/3.7/library/itertools.html#itertools.combinations
|
|
pool = tuple(iterable)
|
|
n = len(pool)
|
|
if r > n:
|
|
return
|
|
indices = list(range(r))
|
|
yield tuple(pool[i] for i in indices)
|
|
while True:
|
|
for i in reversed(range(r)):
|
|
if indices[i] != i + n - r:
|
|
break
|
|
else:
|
|
return
|
|
indices[i] += 1
|
|
for j in range(i+1, r):
|
|
indices[j] = indices[j-1] + 1
|
|
yield tuple(pool[i] for i in indices)
|
|
|
|
class TestCryptoSlip39(unittest.TestCase):
|
|
MS = b"ABCDEFGHIJKLMNOP"
|
|
|
|
def test_basic_sharing_random(self):
|
|
mnemonics = slip39.generate_mnemonics_random(1, [(3, 5)])[0]
|
|
self.assertEqual(slip39.combine_mnemonics(mnemonics[:3]), slip39.combine_mnemonics(mnemonics[2:]))
|
|
|
|
|
|
def test_basic_sharing_fixed(self):
|
|
mnemonics = slip39.generate_mnemonics(1, [(3, 5)], self.MS)[0]
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonics[:3])
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
self.assertEqual(slip39.combine_mnemonics(mnemonics[1:4])[2], ems)
|
|
with self.assertRaises(slip39.MnemonicError):
|
|
slip39.combine_mnemonics(mnemonics[1:3])
|
|
|
|
|
|
def test_passphrase(self):
|
|
mnemonics = slip39.generate_mnemonics(1, [(3, 5)], self.MS, b"TREZOR")[0]
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonics[1:4])
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b"TREZOR"), self.MS)
|
|
self.assertNotEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
|
|
|
|
def test_iteration_exponent(self):
|
|
mnemonics = slip39.generate_mnemonics(1, [(3, 5)], self.MS, b"TREZOR", 1)[0]
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonics[1:4])
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b"TREZOR"), self.MS)
|
|
self.assertNotEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
|
|
mnemonics = slip39.generate_mnemonics(1, [(3, 5)], self.MS, b"TREZOR", 2)[0]
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonics[1:4])
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b"TREZOR"), self.MS)
|
|
self.assertNotEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
|
|
|
|
def test_group_sharing(self):
|
|
group_threshold = 2
|
|
group_sizes = (5, 3, 5, 1)
|
|
member_thresholds = (3, 2, 2, 1)
|
|
mnemonics = slip39.generate_mnemonics(
|
|
group_threshold, list(zip(member_thresholds, group_sizes)), self.MS
|
|
)
|
|
|
|
# Test all valid combinations of mnemonics.
|
|
for groups in combinations(zip(mnemonics, member_thresholds), group_threshold):
|
|
for group1_subset in combinations(groups[0][0], groups[0][1]):
|
|
for group2_subset in combinations(groups[1][0], groups[1][1]):
|
|
mnemonic_subset = list(group1_subset + group2_subset)
|
|
random.shuffle(mnemonic_subset)
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonic_subset)
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
|
|
|
|
# Minimal sets of mnemonics.
|
|
identifier, exponent, ems = slip39.combine_mnemonics([mnemonics[2][0], mnemonics[2][2], mnemonics[3][0]])
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b""), self.MS)
|
|
self.assertEqual(slip39.combine_mnemonics([mnemonics[2][3], mnemonics[3][0], mnemonics[2][4]])[2], ems)
|
|
|
|
# One complete group and one incomplete group out of two groups required.
|
|
with self.assertRaises(slip39.MnemonicError):
|
|
slip39.combine_mnemonics(mnemonics[0][2:] + [mnemonics[1][0]])
|
|
|
|
# One group of two required.
|
|
with self.assertRaises(slip39.MnemonicError):
|
|
slip39.combine_mnemonics(mnemonics[0][1:4])
|
|
|
|
|
|
def test_invalid_sharing(self):
|
|
# Short master secret.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(1, [(2, 3)], self.MS[:14])
|
|
|
|
# Odd length master secret.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(1, [(2, 3)], self.MS + b"X")
|
|
|
|
# Group threshold exceeds number of groups.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(3, [(3, 5), (2, 5)], self.MS)
|
|
|
|
# Invalid group threshold.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(0, [(3, 5), (2, 5)], self.MS)
|
|
|
|
# Member threshold exceeds number of members.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(2, [(3, 2), (2, 5)], self.MS)
|
|
|
|
# Invalid member threshold.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(2, [(0, 2), (2, 5)], self.MS)
|
|
|
|
# Group with multiple members and threshold 1.
|
|
with self.assertRaises(ValueError):
|
|
slip39.generate_mnemonics(2, [(3, 5), (1, 3), (2, 5)], self.MS)
|
|
|
|
|
|
def test_vectors(self):
|
|
for mnemonics, secret in vectors:
|
|
if secret:
|
|
identifier, exponent, ems = slip39.combine_mnemonics(mnemonics)
|
|
self.assertEqual(slip39.decrypt(identifier, exponent, ems, b"TREZOR"), unhexlify(secret))
|
|
else:
|
|
with self.assertRaises(slip39.MnemonicError):
|
|
slip39.combine_mnemonics(mnemonics)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|