CrackLib tests passwords to determine whether they match certain security-oriented characteristics, with the purpose of preventing users from choosing passwords that could easily be guessed. CrackLib is a library containing a C function which may be used in a "passwd"-like program. If you install CrackLib, you will also want to install the cracklib-dicts package.
acquired package info from repodata DB: repodata/f1f85c23079e7764ad00378a9fc5d660b89a03657290e75426caf7be5b7da462-primary.sqlite.bz2
The cracklib-devel package contains the header files and libraries needed for compiling applications which use cracklib.