This module implements an interface to the
crypt(3)routine, which is a one-way hash
function based upon a modified DESalgorithm; see
the Unix man page for further details. Possible uses include
allowing Python scripts to accept typed passwords from the user, or
attempting to crack Unix passwords with a dictionary.
word will usually be a user's password as typed at a prompt or
in a graphical interface. salt is usually a random
two-character string which will be used to perturb the DES algorithm
in one of 4096 ways. The characters in salt must be in the
set [./a-zA-Z0-9]. Returns the hashed password as a
string, which will be composed of characters from the same alphabet
as the salt (the first two characters represent the salt itself).
A simple example illustrating typical use:
import crypt, getpass, pwd
username = raw_input('Python login:')
cryptedpasswd = pwd.getpwnam(username)
if cryptedpasswd == 'x' or cryptedpasswd == '*':
raise "Sorry, currently no support for shadow passwords"
cleartext = getpass.getpass()
return crypt.crypt(cleartext, cryptedpasswd[:2]) == cryptedpasswd