Cisco Cisco MediaSense Release 9.1(1) Licensing Information

 

*** Advantages of CrackLib ***

 

 

1) it WORKS!

 

I wrote something similar ("goodpass") a few years back, which went out

with Crack v3.x.

 

Goodpass was slow and buggy and I think it was used (at least in part)

in "npasswd".  Hopefully, CrackLib will supplant "goodpass" entirely.

 

 

2) it's FAST!

 

CrackLib finds potential passwords quickly, by using an index file to

access dictionary words, and by keeping a table to assist binary

searching.

 

 

3) it's SMALL!

 

CrackLib's dictionary is modified-DAWG compressed with a chunksize of 16

words (see Crack v5.0 docs (when it comes out) for details) - and then

the index file is built, with one entry per chunk.

 

The upshot of all this is that CrackLib can do indexed, binary searches

in a 1.4 million word dictionary (raw size ~ 15Mb), but the CrackLib

files (data+index+watermarks) occupy only ~ 7Mb.  (45% original size)

 

It's even efficient over NFS !

 

 

4) it's MIND-NUMBINGLY THOROUGH!

 

(is this beginning to read like a B-movie flyer, or what?)

 

CrackLib makes literally hundreds of tests to determine whether you've

chosen a bad password.

 

* It tries to generate words from your username and gecos entry to tries

to match them against what you've chosen.

 

* It checks for simplistic patterns.

 

* It then tries to reverse-engineer your password into a dictionary

word, and searches for it in your dictionary.