ethereum/keystore2priv.py: getting geth private key

https://ethereum.stackexchange.com/questions/12830/how-to-get-private-key-from-account-address-and-password

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ethereum/keystore2priv.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+import sys
+import binascii
+from web3.auto import w3
+
+keystore_password = sys.argv[1]
+keystore_file_path = sys.argv[2]
+
+with open(keystore_file_path) as keyfile:
+    encrypted_key = keyfile.read()
+    private_key = w3.eth.account.decrypt(encrypted_key, keystore_password)
+
+print(binascii.b2a_hex(private_key).decode('utf-8'))