Remove support for pyaes (#281)

* remove support for pyaes

* remove support for pyaes

* remove support for pyaes

broadlink/__init__.py

@@ -7,11 +7,8 @@ import threading
 import time
 from datetime import datetime
 
-try:
-    from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
 from cryptography.hazmat.backends import default_backend
-except ImportError:
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
-    import pyaes
 
 
 def gendevice(devtype, host, mac):
@@ -159,39 +156,20 @@ class device:
         self.type = "Unknown"
         self.lock = threading.Lock()
 
-        if 'pyaes' in globals():
-            self.encrypt = self.encrypt_pyaes
-            self.decrypt = self.decrypt_pyaes
-            self.update_aes = self.update_aes_pyaes
-
-        else:
-            self.encrypt = self.encrypt_crypto
-            self.decrypt = self.decrypt_crypto
-            self.update_aes = self.update_aes_crypto
-
         self.aes = None
         key = bytearray(
             [0x09, 0x76, 0x28, 0x34, 0x3f, 0xe9, 0x9e, 0x23, 0x76, 0x5c, 0x15, 0x13, 0xac, 0xcf, 0x8b, 0x02])
         self.update_aes(key)
 
-    def update_aes_pyaes(self, key):
+    def update_aes(self, key):
-        self.aes = pyaes.AESModeOfOperationCBC(key, iv=bytes(self.iv))
-
-    def encrypt_pyaes(self, payload):
-        return b"".join([self.aes.encrypt(bytes(payload[i:i + 16])) for i in range(0, len(payload), 16)])
-
-    def decrypt_pyaes(self, payload):
-        return b"".join([self.aes.decrypt(bytes(payload[i:i + 16])) for i in range(0, len(payload), 16)])
-
-    def update_aes_crypto(self, key):
         self.aes = Cipher(algorithms.AES(key), modes.CBC(self.iv),
                           backend=default_backend())
 
-    def encrypt_crypto(self, payload):
+    def encrypt(self, payload):
         encryptor = self.aes.encryptor()
         return encryptor.update(payload) + encryptor.finalize()
 
-    def decrypt_crypto(self, payload):
+    def decrypt(self, payload):
         decryptor = self.aes.decryptor()
         return decryptor.update(payload) + decryptor.finalize()
 

cli/broadlink_cli

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 
-import broadlink
-import sys
 import argparse
-import time
 import base64
 import codecs
+import time
+
+import broadlink
 
 TICK = 32.84
 IR_TOKEN = 0x26
@@ -18,7 +18,6 @@ def auto_int(x):
 def to_microseconds(bytes):
     result = []
     #  print bytes[0] # 0x26 = 38for IR
-    length = bytes[2] + 256 * bytes[3]  # presently ignored
     index = 4
     while index < len(bytes):
         chunk = bytes[index]
@@ -83,7 +82,8 @@ parser.add_argument("--sensors", action="store_true", help="check all sensors")
 parser.add_argument("--learn", action="store_true", help="learn command")
 parser.add_argument("--rfscanlearn", action="store_true", help="rf scan learning")
 parser.add_argument("--learnfile", help="save learned command to a specified file")
-parser.add_argument("--durations", action="store_true", help="use durations in micro seconds instead of the Broadlink format")
+parser.add_argument("--durations", action="store_true",
+                    help="use durations in micro seconds instead of the Broadlink format")
 parser.add_argument("--convert", action="store_true", help="convert input data to durations")
 parser.add_argument("data", nargs='*', help="Data to send or convert")
 args = parser.parse_args()

cli/broadlink_discovery

@@ -1,10 +1,10 @@
 #!/usr/bin/env python
 
-import broadlink
-import time
 import argparse
 
-parser = argparse.ArgumentParser(fromfile_prefix_chars='@');
+import broadlink
+
+parser = argparse.ArgumentParser(fromfile_prefix_chars='@')
 parser.add_argument("--timeout", type=int, default=5, help="timeout to wait for receiving discovery responses")
 parser.add_argument("--ip", default=None, help="ip address to use in the discovery")
 args = parser.parse_args()
@@ -15,7 +15,8 @@ for device in devices:
     if device.auth():
         print("###########################################")
         print(device.type)
-        print("# broadlink_cli --type {} --host {} --mac {}".format(hex(device.devtype), device.host[0], ''.join(format(x, '02x') for x in device.mac)))
+        print("# broadlink_cli --type {} --host {} --mac {}".format(hex(device.devtype), device.host[0],
+                                                                    ''.join(format(x, '02x') for x in device.mac)))
         print("Device file data (to be used with --device @filename in broadlink_cli) : ")
         print("{} {} {}".format(hex(device.devtype), device.host[0], ''.join(format(x, '02x') for x in device.mac)))
         if hasattr(device, 'check_temperature'):
@@ -23,4 +24,3 @@ for device in devices:
         print("")
     else:
         print("Error authenticating with device : {}".format(device.host))
-

setup.py

@@ -1,20 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-import re
-import sys
-import warnings
 
 from setuptools import setup, find_packages
 
-try:
-    import cryptography
-    dynamic_requires = ['cryptography>=2.1.1']
-except ImportError:
-    dynamic_requires = ["pyaes==1.6.0"]
-
-# For Hysen thermostatic heating controller
-dynamic_requires.append('PyCRC')
 
 version = '0.11.1'
 
@@ -26,7 +15,7 @@ setup(
     url='http://github.com/mjg59/python-broadlink',
     packages=find_packages(),
     scripts=[],
-    install_requires=dynamic_requires,
+    install_requires=['cryptography>=2.1.1', 'PyCRC'],
     description='Python API for controlling Broadlink IR controllers',
     classifiers=[
         'Development Status :: 4 - Beta',