CODEWITHSUNDEEP
pythonwindowspython-2.7python-3.3crypt
codaamok
codaamok

Reputation: 747

Using the crypt module in Windows?

In IDLE and Python version 3.3.2, I try and call the python module like so:

hash2 = crypt(word, salt)

I import it at the top of my program like so:

from crypt import *

The result I get is the following:

Traceback (most recent call last):
  File "C:\none\of\your\business\adams.py", line 10, in <module>
    from crypt import *
  File "C:\Python33\lib\crypt.py", line 3, in <module>
    import _crypt
ImportError: No module named '_crypt'

However, when I execute the same file adams.py in Ubuntu, with Python 2.7.3, it executes perfectly - no errors.

I tried the following to resolve the issue for my Windows & Python 3.3.2 (though I'm sure the OS isn't the issue, the Python version or my use of syntax is the issue):

  1. Rename the directory in the Python33 directory from Lib to lib
  2. Rename the crypt.py in lib to _crypt.py. However, it turns out the entire crypt.py module depends on an external module called _crypt.py too.
  3. Browsed internet to download anything remotely appropriate to resemble _crypt.py

It's not Python, right? It's me...(?) I'm using syntaxes to import and use external modules that are acceptable in 2.7.3, but not in 3.3.2. Or have I found a bug in 3.3.2?

Upvotes: 6

Views: 48772

Answers (6)

Surakshith
Surakshith

Reputation: 141

I had the same issue. I was trying to use crypt on my Windows 10. I used sha512 which fixed the issue.

from passlib.hash import sha512_crypt as sha512
hash = sha512.hash(passwd, rounds=5000)

Upvotes: 0

iamnonso
iamnonso

Reputation: 103

If you are on Windows, you can easily use the bcrypt module This is supported on both windows and Mac. However, if the error continues in my own case, check if the code automatically imports crypt for you.

Upvotes: 0

Akash Kumar
Akash Kumar

Reputation: 97

You can use instead 'bcrypt' for this purpose on a Windows PC, this is done because crypt is a UNIX module only so wont be compatible in windows easily. Go for bcrypt

import bcrypt
password = b"passit" #passit is the word to encrypt
pass = bcrypt.hashpw(password, bcrypt.gensalt())
print(b)

This will get your work done. For further reference, visit: http://passlib.readthedocs.io/en/stable/install.html

https://pypi.python.org/pypi/bcrypt/2.0.0

Upvotes: -3

Kounavi
Kounavi

Reputation: 1121

A better approach would be to use the python passlib module which generates compatible crypt hashes of linux passwords (I assume that's what you most probably want). I've verified this by using Kickstart files by injecting the generated hashed password value in rootpw and user attributes. The functions you need are:

from passlib.hash import md5_crypt as md5
from passlib.hash import sha256_crypt as sha256
from passlib.hash import sha512_crypt as sha512

md5_passwd = md5.encrypt(passwd, rounds=5000, implicit_rounds=True)
sha256_passwd = sha256.encrypt(passwd, rounds=5000, implicit_rounds=True)
sha512_passwd = sha512.encrypt(passwd, rounds=5000, implicit_rounds=True)

The first parameter is self-explanatory.
The second & third parameter have to do with specification compliance and are required to generate linux compatible password hashes*** (see: Passlib: SHA256 spec, format & algorithm)

***NOTE: Tested with SHA512 but I see no reason why it shouldn't work with SHA256 or MD5.

Upvotes: 10

Gringo Suave
Gringo Suave

Reputation: 31860

I found an alternative module called fcrypt available here:

It's old, so don't expect python3 compatibility.

Upvotes: 2

roippi
roippi

Reputation: 25954

I assume that is because crypt is a Unix Specific Service.

Right at the top of the docs for crypt:

34.5. crypt — Function to check Unix passwords

Platforms: Unix

Upvotes: 5

Related Questions