remove random shuffle function for systemrandom equivalent

src/communicatorutils/downloadblocks/__init__.py

@@ -1,9 +1,10 @@
-"""
-    Onionr - Private P2P Communication
+"""Onionr - Private P2P Communication.
 
-    Download blocks using the communicator instance
+Download blocks using the communicator instance.
 """
 from typing import TYPE_CHECKING
+from secrets import SystemRandom
+
 if TYPE_CHECKING:
     from communicator import OnionrCommunicatorDaemon
     from deadsimplekv import DeadSimpleKV
@@ -82,7 +83,7 @@ def download_blocks_from_communicator(comm_inst: "OnionrCommunicatorDaemon"):
             except onionrexceptions.OnlinePeerNeeded:
                 continue
         else:
-            blockPeers = onionrcrypto.cryptoutils.random_shuffle(blockPeers)
+            SystemRandom().shuffle(blockPeers)
             peerUsed = blockPeers.pop(0)
 
         if not kv.get('shutdown') and peerUsed.strip() != '':

src/communicatorutils/uploadblocks/__init__.py

@@ -5,6 +5,7 @@ Upload blocks in the upload queue to peers from the communicator
 from typing import TYPE_CHECKING
 from time import sleep
 from threading import Thread
+from secrets import SystemRandom
 
 from . import sessionmanager
 
@@ -14,7 +15,6 @@ from communicatorutils import proxypicker
 import onionrexceptions
 from onionrblocks import onionrblockapi as block
 from onionrutils import stringvalidators, basicrequests
-import onionrcrypto
 from communicator import onlinepeers
 if TYPE_CHECKING:
     from deadsimplekv import DeadSimpleKV
@@ -47,8 +47,8 @@ def upload_blocks_from_communicator(comm_inst: 'OnionrCommunicatorDaemon'):
         sessionmanager.BlockUploadSessionManager)
     tried_peers: UserID = []
     finishedUploads = []
-    kv.put('blocksToUpload', onionrcrypto.cryptoutils.random_shuffle(
-        kv.get('blocksToUpload')))
+
+    SystemRandom().shuffle(kv.get('blocksToUpload'))
 
     def remove_from_hidden(bl):
         sleep(60)

src/communicatorutils/uploadblocks/mixmate/pool.py

@@ -3,10 +3,10 @@
 Upload pool
 """
 from typing import List
+from secrets import SystemRandom
 
 import onionrutils
 import onionrtypes
-from onionrcrypto import cryptoutils
 """
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -62,7 +62,8 @@ class UploadPool:
         """Get the hash pool in secure random order."""
         if len(self._pool) != self._pool_size:
             raise PoolNotReady
-        final_pool: List[onionrtypes.BlockHash] = cryptoutils.random_shuffle(
+
+        final_pool: List[onionrtypes.BlockHash] = SystemRandom().shuffle(
             list(self._pool))
 
         self._pool.clear()