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47 lines
1.5 KiB
47 lines
1.5 KiB
3 years ago
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#!/usr/bin/env python3
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# Copyright (c) 2015-2018 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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from argparse import ArgumentParser
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from base64 import urlsafe_b64encode
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from binascii import hexlify
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from getpass import getpass
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from os import urandom
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import hmac
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def generate_salt(size):
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"""Create size byte hex salt"""
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return hexlify(urandom(size)).decode()
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def generate_password():
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"""Create 32 byte b64 password"""
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return urlsafe_b64encode(urandom(32)).decode('utf-8')
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def password_to_hmac(salt, password):
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m = hmac.new(bytearray(salt, 'utf-8'), bytearray(password, 'utf-8'), 'SHA256')
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return m.hexdigest()
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def main():
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parser = ArgumentParser(description='Create login credentials for a JSON-RPC user')
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parser.add_argument('username', help='the username for authentication')
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parser.add_argument('password', help='leave empty to generate a random password or specify "-" to prompt for password', nargs='?')
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args = parser.parse_args()
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if not args.password:
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args.password = generate_password()
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elif args.password == '-':
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args.password = getpass()
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# Create 16 byte hex salt
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salt = generate_salt(16)
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password_hmac = password_to_hmac(salt, args.password)
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print('String to be appended to bitcoin.conf:')
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print('rpcauth={0}:{1}${2}'.format(args.username, salt, password_hmac))
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print('Your password:\n{0}'.format(args.password))
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if __name__ == '__main__':
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main()
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