def test_secretbox_wrong_length():
with pytest.raises(ValueError):
c.crypto_secretbox(b"", b"", b"")
with pytest.raises(ValueError):
c.crypto_secretbox(b"", b"", b"\x00" * c.crypto_secretbox_KEYBYTES)
with pytest.raises(ValueError):
c.crypto_secretbox_open(b"", b"", b"")
with pytest.raises(ValueError):
c.crypto_secretbox_open(
b"", b"", b"\x00" * c.crypto_secretbox_KEYBYTES)
def test_secretbox_wrong_length():
with pytest.raises(ValueError):
c.crypto_secretbox(b"", b"", b"")
with pytest.raises(ValueError):
c.crypto_secretbox(b"", b"", b"\x00" * c.crypto_secretbox_KEYBYTES)
with pytest.raises(ValueError):
c.crypto_secretbox_open(b"", b"", b"")
with pytest.raises(ValueError):
c.crypto_secretbox_open(b"", b"",
b"\x00" * c.crypto_secretbox_KEYBYTES)
def test_secretbox():
key = b"\x00" * c.crypto_secretbox_KEYBYTES
msg = b"message"
nonce = b"\x01" * c.crypto_secretbox_NONCEBYTES
ct = c.crypto_secretbox(msg, nonce, key)
assert len(ct) == len(msg) + c.crypto_secretbox_BOXZEROBYTES
assert tohex(ct) == "3ae84dfb89728737bd6e2c8cacbaf8af3d34cc1666533a"
msg2 = c.crypto_secretbox_open(ct, nonce, key)
assert msg2 == msg
with pytest.raises(CryptoError):
c.crypto_secretbox_open(
msg + b"!",
nonce,
key,
)
def test_secretbox():
key = b"\x00" * c.crypto_secretbox_KEYBYTES
msg = b"message"
nonce = b"\x01" * c.crypto_secretbox_NONCEBYTES
ct = c.crypto_secretbox(msg, nonce, key)
assert len(ct) == len(msg) + c.crypto_secretbox_BOXZEROBYTES
assert tohex(ct) == "3ae84dfb89728737bd6e2c8cacbaf8af3d34cc1666533a"
msg2 = c.crypto_secretbox_open(ct, nonce, key)
assert msg2 == msg
with pytest.raises(CryptoError):
c.crypto_secretbox_open(
msg + b"!",
nonce,
key,
)
def open_secretbox(private, ciphertext, nonce):
try:
plaintext = c.crypto_secretbox_open(base58.b58decode(ciphertext),
base58.b58decode(nonce),
base58.b58decode(private))
except CryptoError:
msg = "Decryption failed. Ciphertext failed verification.\n" + "（解密失败，用户将留言设置为私密）"
return msg.encode('utf-8')
return plaintext
async def _receive_encrypted(self) -> DecryptedMessage:
"""Receive an encrypted message."""
e = NSTPMessage()
e_length = struct.unpack(">H", await self.reader.readexactly(2))[0]
e.ParseFromString(await self.reader.readexactly(e_length))
e_type = e.WhichOneof("message_")
if e_type != "encrypted_message":
raise Exception(f"expected encrypted message, received {e_type}")
m = DecryptedMessage()
m.ParseFromString(
crypto_secretbox_open(e.encrypted_message.ciphertext,
e.encrypted_message.nonce, self.reader_key))
return m
def handleEncryptedMessage(s, nstp_msg):
print("inside handleEncryptedMessage")
if s in client_init:
encr_msg = nstp_v3_pb2.EncryptedMessage()
encr_msg.CopyFrom(nstp_msg.encrypted_message)
print(encr_msg.ciphertext, encr_msg.nonce)
decr_msg_b = crypto_secretbox_open(encr_msg.ciphertext, encr_msg.nonce,
dict_session_keys[s][0])
print(decr_msg_b)
decr_msg = nstp_v3_pb2.DecryptedMessage()
decr_msg.ParseFromString(decr_msg_b)
switcher = {
'auth_request': handleAuthReq,
'ping_request': handlePingReq,
'store_request': handleStoreReq,
'load_request': handleLoadReq
}
func = switcher.get(decr_msg.WhichOneof("message_"))
func(s, decr_msg)
else:
print("out of spec")
errorRes(s, "out of spec")