update encryption doc
@@ -7,8 +7,9 @@ import struct
import time
try:
- from cryptography.hazmat.primitives.ciphers import \
+ from cryptography.hazmat.primitives.ciphers import (
Cipher, algorithms, modes
+ )
from cryptography.hazmat.backends import default_backend
except ImportError: # pragma: no cover
raise RuntimeError("You need to install Cryptography.") # pragma: no cover
