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Deal with mypy errors w/ type-hinted pynacl 1.5.0 (#11714)

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* Deal with mypy errors w/ type-hinted pynacl 1.5.0

Fixes #11644.

I really don't like that we're monkey patching pynacl SignedKey
instances with alg and version objects. But I'm too scared to make the
changes necessary right now.

(Ideally I would replace `signedjson.types.SingingKey` with a runtime class which
wraps or inherits from `nacl.signing.SigningKey`.) C.f. https://github.com/matrix-org/python-signedjson/issues/16
This commit is contained in:
David Robertson 2022-01-10 13:40:46 +00:00 committed by Olivier Wilkinson (reivilibre)
parent 2185b28184
commit 1b1aed38e3
2 changed files with 8 additions and 1 deletions
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1
changelog.d/11714.misc Normal file
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@ -0,0 +1 @@
Fix a typechecker problem related to our (ab)use of `nacl.signing.SigningKey`s.

8
tests/crypto/test_event_signing.py
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@ -14,6 +14,7 @@
import nacl.signing import nacl.signing
import signedjson.types
from unpaddedbase64 import decode_base64 from unpaddedbase64 import decode_base64
from synapse.api.room_versions import RoomVersions from synapse.api.room_versions import RoomVersions
@ -35,7 +36,12 @@ HOSTNAME = "domain"
class EventSigningTestCase(unittest.TestCase): class EventSigningTestCase(unittest.TestCase):
def setUp(self): def setUp(self):
self.signing_key = nacl.signing.SigningKey(SIGNING_KEY_SEED) # NB: `signedjson` expects `nacl.signing.SigningKey` instances which have been
# monkeypatched to include new `alg` and `version` attributes. This is captured
# by the `signedjson.types.SigningKey` protocol.
self.signing_key: signedjson.types.SigningKey = nacl.signing.SigningKey(
SIGNING_KEY_SEED
)
self.signing_key.alg = KEY_ALG self.signing_key.alg = KEY_ALG
self.signing_key.version = KEY_VER self.signing_key.version = KEY_VER