43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
import getpass # hides types characters, very useful
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import json
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import sys
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from hashlib import sha256 # This library is used to create hashes out of the password
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def get_credentials():
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username = input('Enter your username: ')
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password = getpass.getpass('Enter your password: ')
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return (username, password)
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def authenticate(username, password, pwdb):
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password_hash = sha256(password.encode("utf-8")).hexdigest()
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return password_hash == pwdb[username]
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def add_user(username, pwdb):
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pwd = getpass.getpass(f'Enter password for {username}: ')
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pwdb[username] = sha256(pwd.encode("utf-8")).hexdigest()
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return pwdb
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def read_pwdb(pwdb_path):
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try:
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pwdb_file = open(pwdb_path, 'rt')
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pwdb = json.load(pwdb_file)
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except Exception:
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pwdb = {}
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return pwdb
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def write_pwdb(pwdb, pwdb_path):
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pwdb_file = open(pwdb_path, 'wt')
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json.dump(pwdb, pwdb_file)
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pwdb_path = 'pwdb.json'
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pwdb = read_pwdb(pwdb_path)
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if len(sys.argv) > 1:
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pwdb = add_user(sys.argv[1], pwdb)
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write_pwdb(pwdb, pwdb_path)
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else:
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username, password = get_credentials()
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if username not in pwdb or not authenticate(username, password, pwdb):
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print('Wrong username or password!')
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else:
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print('Successfully authenticated!')
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