Coverage for d7a/system_files/user_authentication_key.py: 65%

23 statements  

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1# 

2# Copyright (c) 2015-2021 University of Antwerp, Aloxy NV. 

3# 

4# This file is part of pyd7a. 

5# See https://github.com/Sub-IoT/pyd7a for further info. 

6# 

7# Licensed under the Apache License, Version 2.0 (the "License"); 

8# you may not use this file except in compliance with the License. 

9# You may obtain a copy of the License at 

10# 

11# http://www.apache.org/licenses/LICENSE-2.0 

12# 

13# Unless required by applicable law or agreed to in writing, software 

14# distributed under the License is distributed on an "AS IS" BASIS, 

15# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

16# See the License for the specific language governing permissions and 

17# limitations under the License. 

18# 

19import struct 

20 

21from d7a.support.schema import Validatable, Types 

22from d7a.system_files.file import File 

23from d7a.system_files.system_file_ids import SystemFileIds 

24 

25 

26class UserAuthenticationKeyFile(File, Validatable): 

27 

28 SCHEMA = [{ 

29 "key": Types.BITS(length=128), 

30 "rfu": Types.BITS(length=192) 

31 }] 

32 

33 def __init__(self, key=0): 

34 self.key = key 

35 self.rfu = 0 

36 Validatable.__init__(self) 

37 File.__init__(self, SystemFileIds.ALP_USER_AUTHENTICATION_KEY.value, 40) 

38 

39 @staticmethod 

40 def parse(s, offset=0, length=40): 

41 key = s.read("bytes:16") 

42 _rfu = s.read("bytes:24") 

43 return UserAuthenticationKeyFile(key) 

44 

45 def __iter__(self): 

46 for byte in [(self.key & (0xff << pos * 8)) >> pos * 8 for pos in range(16)]: 

47 yield byte 

48 

49 for byte in range(24): 

50 yield 0 

51 

52 def __str__(self): 

53 return "key={}".format(self.key)