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1993-07-09
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CrackLib is a library containing a C function (well, lots of functions
really, but you only need to use one of them) which may be used in a
"passwd"-like program.
The idea is simple: try to prevent users from choosing passwords that
could be guessed by "Crack" by filtering them out, at source.
CrackLib is an offshoot of the the version 5 "Crack" software, and
contains a considerable number of ideas nicked from the new software.
At the time of writing, Crack 5 is incomplete (still awaiting purchase
of my home box) - but I though I could share this with you.
NOTE THIS WELL: CrackLib is NOT a replacement "passwd" program.
CrackLib is a LIBRARY. CrackLib is what trendy marketdroid types would
probably call an "enabler".
The idea is that you wire it into your _own_ "passwd" program (if you
have source); alternatively, you wire it into something like "shadow"
from off of the net. You can use it almost _everywhere_.
FOR YOUR INFORMATION:
CrackLib has been tested mostly on Suns. If you can point me at ways
round portability problems (eg: static linking, other libraries, etc)
I'd be most grateful.
A reference copy of CrackLib (+ large dictionary) can be found via
anonymous FTP at:
black.ox.ac.uk:~ftp/src/security/cracklib25.tar.Z
- alec