#!/usr/bin/env python3

import dbm
import sys
from cryptography import x509
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization
import hashlib

if len(sys.argv) < 2:
    print(f'{sys.argv[0]}: missing key hash')
    sys.exit(1)

with dbm.open('server/config/clients/fingerprints', 'c') as db:
    if bytes.fromhex(sys.argv[1]) not in db.keys():
        print(f'{sys.argv[0]}: hash not registered')
        sys.exit(1) 
    db[bytes.fromhex(sys.argv[1])] = input('New common name: ')
    db.close()