# cracklib

CrackLib tests passwords to determine whether they match certain security-oriented characteristics.
You can use CrackLib to stop users from choosing passwords which would be easy to guess.
CrackLib performs certain tests:

* It tries to generate words from a username and gecos entry and checks those words against the password;
* It checks for simplistic patterns in passwords;
* It checks for the password in a dictionary.

CrackLib is actually a library containing a particular C function which is used to check the password, as well as other C functions.
CrackLib is not a replacement for a passwd program; it must be used in conjunction with an existing passwd program.

Install the cracklib package if you need a program to check users' passwords to see if they are at least minimally secure.
If you install CrackLib, you'll also want to install the cracklib-dicts package.