Coverage for admin/ledger_utils.py: 100%

1# The MIT License (MIT) 

2# 

3# Copyright (c) 2021 RSK Labs Ltd 

4# 

5# Permission is hereby granted, free of charge, to any person obtaining a copy of 

6# this software and associated documentation files (the "Software"), to deal in 

7# the Software without restriction, including without limitation the rights to 

8# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 

9# of the Software, and to permit persons to whom the Software is furnished to do 

10# so, subject to the following conditions: 

11# 

12# The above copyright notice and this permission notice shall be included in all 

13# copies or substantial portions of the Software. 

14# 

15# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 

16# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

17# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 

18# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 

19# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 

20# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 

21# SOFTWARE. 

22 

23from ledgerblue.hexParser import IntelHexParser 

24from hashlib import sha256 

25 

26 

27def compute_app_hash(path): 

28 # Taken from 

29 # https://github.com/LedgerHQ/blue-loader-python/blob/0.1.31/ledgerblue/hashApp.py 

30 parser = IntelHexParser(path) 

31 digest = sha256() 

32 for a in parser.getAreas(): 

33 digest.update(a.data) 

34 return digest.digest() 

35 

36 

37def encode_eth_message(msg): 

38 return f"\x19Ethereum Signed Message:\n{str(len(msg))}{msg}".encode("ascii") 

39 

40 

41def eth_message_to_printable(msg): 

42 return repr(msg.decode("ascii"))[1:-1]