simple encrypt/decrypt lib in python with private key

Question

Is there a simple way to encrypt/decrypt a string with a key?

Something like:

key = \'1234\'
string =  \'hello world\'
encrypted_string = encrypt(key, st         


        

Answer 1

To expand on dsamersoff's answer.. This is simple and insecure, but for certain tasks may be useful. here's some code:

import crypt
import getpass
import os.path

def auth_func():
    return (raw_input('Username:'), getpass.getpass('Password:'))

def xor(a,b):
    assert len(b) >= len(a)
    return "".join([chr( ord(a[i]) ^ ord(b[i])) for i in range(len(a))])

# create a new credentials file if needed
if not os.path.exists('cred'):
    with open('cred', 'w') as f:
        user, pwd =  auth_func()
        f.write ("{}\n".format(user))               
        f.write ("{}\n".format(xor(pwd, crypt.crypt('secret', 'words'))))
        f.close()

# read credentials and print user/password
with open('cred', 'r') as f:
    user, pwd = f.read().split('\n')[:2]
    print user
    print xor(pwd, crypt.crypt('secret', 'words'))