1 files changed, 41 insertions, 0 deletions
diff --git a/share/rpcuser/rpcuser.py b/share/rpcuser/rpcuser.py
new file mode 100755
index 0000000000..9fd176908b
--- /dev/null
+++ b/share/rpcuser/rpcuser.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python2 
+# Copyright (c) 2015 The Bitcoin Core developers 
+# Distributed under the MIT software license, see the accompanying 
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import hashlib
+import sys
+import os
+from random import SystemRandom
+import base64
+import hmac
+
+if len(sys.argv) < 2:
+    sys.stderr.write('Please include username as an argument.\n')
+    sys.exit(0)
+
+username = sys.argv[1]
+
+#This uses os.urandom() underneath
+cryptogen = SystemRandom()
+
+#Create 16 byte hex salt
+salt_sequence = [cryptogen.randrange(256) for i in range(16)]
+hexseq = list(map(hex, salt_sequence))
+salt = "".join([x[2:] for x in hexseq])
+
+#Create 32 byte b64 password
+password = base64.urlsafe_b64encode(os.urandom(32))
+
+digestmod = hashlib.sha256
+
+if sys.version_info.major >= 3:
+    password = password.decode('utf-8')
+    digestmod = 'SHA256'
+ 
+m = hmac.new(bytearray(salt, 'utf-8'), bytearray(password, 'utf-8'), digestmod)
+result = m.hexdigest()
+
+print("String to be appended to bitcoin.conf:")
+print("rpcauth="+username+":"+salt+"$"+result)
+print("Your password:\n"+password)