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cultmesh-py: pin high-S signature acceptance to the .NET reference
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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
Libby 2026-11-07 01:36:05 +00:00
commit 497ff201aa
1 changed files with 9 additions and 0 deletions
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packages/cultmesh-py/tests/test_authority_route_vectors.py
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@ -182,6 +182,15 @@ class AuthorityRouteVectorTests(unittest.TestCase):
refusal(self, lambda: v.trust.validate(v.verse_id, short, v.now)),
)
def test_high_s_signature_verifies_as_it_does_in_dotnet(self) -> None:
v = Vector("authority-route-vectors.json")
order = 0xFFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551
raw = base64.b64decode(v.certificate.signature)
s = int.from_bytes(raw[32:], "big")
flipped = raw[:32] + (order - s).to_bytes(32, "big")
high = v.with_certificate(signature=base64.b64encode(flipped).decode())
v.trust.validate(v.verse_id, high, v.now)
def test_session_proof_rejects_replay_wrong_key_and_forgery(self) -> None:
v = Vector("authority-route-vectors.json")
replayed = replace(v.request, client_nonce="replayed")