Merge pull request #74 from ltonetwork/no-pyblake2

Remove dependency on pysha3 and pyblake2.

Author: jasny

.travis.yml

@@ -1,8 +1,8 @@
----
 language: python
+dist: jammy
 
 python:
-  - 3.9.7
+  - 3.9
   - 3.8
 
 branches:

setup.cfg

@@ -24,15 +24,13 @@ python_requires = >=3.8
 install_requires =
     requests>=2.24.0, <3
     PyNaCl
-    pyblake2~=1.1.0
     base58~=0.2.5
     ecdsa~=0.17.0
     inflection~=0.5.1
     freezegun~=1.1.0
     mnemonic~=0.20
     eth-utils~=2.0.0
     pycryptodome~=3.12.0
-    pysha3~=1.0.2
 
 [options.packages.find]
 where = src

src/lto/crypto.py

@@ -1,6 +1,5 @@
 import base64
 import hashlib
-import pyblake2
 import base58
 import inflection
 
@@ -14,7 +13,7 @@ def sha256(s):
 
 
 def hash_chain(s):
-    a = pyblake2.blake2b(s, digest_size=32).digest()
+    a = hashlib.blake2b(s, digest_size=32).digest()
     b = hashlib.sha256(a).digest()
     return ''.join(map(chr, b))