def test_reject_unicode(self, backend):
poly = Poly1305(b"0" * 32)
with pytest.raises(TypeError):
poly.update("") # type:ignore[arg-type]
with pytest.raises(TypeError):
Poly1305.generate_tag(b"0" * 32, "") # type:ignore[arg-type]
def test_reject_unicode(self, backend):
poly = Poly1305(b"0" * 32)
with pytest.raises(TypeError):
poly.update(u"")
with pytest.raises(TypeError):
Poly1305.generate_tag(b"0" * 32, u"")
def test_invalid_key_length(self, backend):
with pytest.raises(ValueError):
Poly1305(b"0" * 31)
with pytest.raises(ValueError):
Poly1305.generate_tag(b"0" * 31, b"msg")
with pytest.raises(ValueError):
Poly1305(b"0" * 33)
with pytest.raises(ValueError):
Poly1305.generate_tag(b"0" * 33, b"msg")
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_buffer_protocol(self, backend):
key = binascii.unhexlify(
b"1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cb"
b"c207075c0")
msg = binascii.unhexlify(
b"2754776173206272696c6c69672c20616e642074686520736c69746"
b"87920746f7665730a446964206779726520616e642067696d626c65"
b"20696e2074686520776162653a0a416c6c206d696d7379207765726"
b"52074686520626f726f676f7665732c0a416e6420746865206d6f6d"
b"65207261746873206f757467726162652e")
key = bytearray(key)
poly = Poly1305(key)
poly.update(bytearray(msg))
assert poly.finalize() == binascii.unhexlify(
b"4541669a7eaaee61e708dc7cbcc5eb62")
assert Poly1305.generate_tag(
key,
msg) == binascii.unhexlify(b"4541669a7eaaee61e708dc7cbcc5eb62")
def test_invalid_key_type(self, backend):
with pytest.raises(TypeError):
Poly1305(object())
with pytest.raises(TypeError):
Poly1305.generate_tag(object(), b"msg")
def poly1305(key, data, nonce):
"""Compute a Poly1305 tag for a block of data"""
return Poly1305.generate_tag(poly1305_key(key, nonce), data)