def test_verify_reject_unicode(self, backend):
poly = Poly1305(b"0" * 32)
with pytest.raises(TypeError):
poly.verify(u"")
with pytest.raises(TypeError):
Poly1305.verify_tag(b"0" * 32, b"msg", u"")
def test_verify_reject_unicode(self, backend):
poly = Poly1305(b"0" * 32)
with pytest.raises(TypeError):
poly.verify("") # type:ignore[arg-type]
with pytest.raises(TypeError):
Poly1305.verify_tag(b"0" * 32, b"msg", "") # type:ignore[arg-type]
def poly1305_verify(key, data, nonce, tag):
"""Verify a Poly1305 tag for a block of data"""
try:
Poly1305.verify_tag(poly1305_key(key, nonce), data, tag)
return True
except InvalidSignature:
return False
def test_vectors(self, vector, backend):
key = binascii.unhexlify(vector["key"])
msg = binascii.unhexlify(vector["msg"])
tag = binascii.unhexlify(vector["tag"])
poly = Poly1305(key)
poly.update(msg)
assert poly.finalize() == tag
assert Poly1305.generate_tag(key, msg) == tag
Poly1305.verify_tag(key, msg, tag)
def test_invalid_verify(self, backend):
poly = Poly1305(b"0" * 32)
poly.update(b"msg")
with pytest.raises(InvalidSignature):
poly.verify(b"")
p2 = Poly1305(b"0" * 32)
p2.update(b"msg")
with pytest.raises(InvalidSignature):
p2.verify(b"\x00" * 16)
with pytest.raises(InvalidSignature):
Poly1305.verify_tag(b"0" * 32, b"msg", b"\x00" * 16)
def test_verify(self, backend):
poly = Poly1305(b"0" * 32)
poly.update(b"msg")
tag = poly.finalize()
with pytest.raises(AlreadyFinalized):
poly.verify(b"")
poly2 = Poly1305(b"0" * 32)
poly2.update(b"msg")
poly2.verify(tag)
Poly1305.verify_tag(b"0" * 32, b"msg", tag)