/usr/lib/python3/dist-packages/wormhole/test/test_hkdf.py is in magic-wormhole 0.10.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | from __future__ import print_function, unicode_literals
import unittest
from binascii import unhexlify #, hexlify
from hkdf import Hkdf
#def generate_KAT():
# print("KAT = [")
# for salt in (b"", b"salt"):
# for context in (b"", b"context"):
# skm = b"secret"
# out = HKDF(skm, 64, XTS=salt, CTXinfo=context)
# hexout = " '%s' +\n '%s'" % (hexlify(out[:32]),
# hexlify(out[32:]))
# print(" (%r, %r, %r,\n%s)," % (salt, context, skm, hexout))
# print("]")
KAT = [
('', '', 'secret',
'2f34e5ff91ec85d53ca9b543683174d0cf550b60d5f52b24c97b386cfcf6cbbf' +
'9cfd42fd37e1e5a214d15f03058d7fee63dc28f564b7b9fe3da514f80daad4bf'),
('', 'context', 'secret',
'c24c303a1adfb4c3e2b092e6254ed481c41d8955ba8ec3f6a1473493a60c957b' +
'31b723018ca75557214d3d5c61c0c7a5315b103b21ff00cb03ebe023dc347a47'),
('salt', '', 'secret',
'f1156507c39b0e326159e778696253122de430899a8df2484040a85a5f95ceb1' +
'dfca555d4cc603bdf7153ed1560de8cbc3234b27a6d2be8e8ca202d90649679a'),
('salt', 'context', 'secret',
'61a4f201a867bcc12381ddb180d27074408d03ee9d5750855e5a12d967fa060f' +
'10336ead9370927eaabb0d60b259346ee5f57eb7ceba8c72f1ed3f2932b1bf19'),
]
class TestKAT(unittest.TestCase):
# note: this uses SHA256
def test_kat(self):
for (salt, context, skm, expected_hexout) in KAT:
expected_out = unhexlify(expected_hexout)
for outlen in range(0, len(expected_out)):
out = Hkdf(salt.encode("ascii"),
skm.encode("ascii")).expand(context.encode("ascii"),
outlen)
self.assertEqual(out, expected_out[:outlen])
#if __name__ == '__main__':
# generate_KAT()
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