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GWN 8/4/03 (+ Password Generator Q/A)
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AgenT
Apprentice
Apprentice


Joined: 18 May 2003
Posts: 280

PostPosted: Mon Aug 04, 2003 5:52 pm    Post subject: GWN 8/4/03 (+ Password Generator Q/A) Reply with quote

I do not think there are any threads specifically dedicated to GWN discussion, so maybe this can be where people discuss (at least) the 8/4/03 GWN.

When I clicked on the 8/4/03 GWN link I already had 4 browser tabs open searching for a simple linux based password generator (on gentoo, freshmeat, sourceforge, and google). To my surprise, the focus on the topic "Tips and Tricks" was "A Quick and Easy Password Generator"! My question concerns how one would go about making/modifying the password generator to only use specific types of characters. For example, only using numbers, lowercase, and uppercase letters. Any ideas? Suggestions?

For quick reference, here are the lines of code:

1 8-char pw:
Code:
dd if=/dev/urandom count=1 2> /dev/null | uuencode -m - | head -n 2 | tail -n 1 | cut -c-8

10 8-char pw's:
Code:
for ((n=0;n<10;n++)); do dd if=/dev/urandom count=1 2> /dev/null | uuencode -m -| head -n 2 | tail -n 1 | cut -c-8; done

1 md5sum pw (for routers, etc.):
Code:
dd if=/dev/urandom count=1 2> /dev/null | md5sum | head -n 2 | tail -n 1 | cut -c-26

P.S. Thanks to all the people involved for the great GWN's!


Last edited by AgenT on Mon Aug 04, 2003 7:02 pm; edited 3 times in total
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Unne
l33t
l33t


Joined: 21 Jul 2003
Posts: 616

PostPosted: Mon Aug 04, 2003 6:50 pm    Post subject: Reply with quote

Code:
perl -e '$_ = `dd if=/dev/urandom count=1 2> /dev/null | uuencode -m - | head -n 2 | tail -n 1  | cut -c-8` while (!/^[0-9a-zA-z]+$/); print'


Far from optimal, all it does is keep generating passwords like it was posted in the article until it finds one that has only letters and numbers. Better than nothing though. The vast majority of passwords generated seem to be only letters and numbers anyways. I guess because of the -m switch to uuencode.

I'm gonna have to try those artwiz fonts. I've heard too many people mention them so far. :)
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devon
l33t
l33t


Joined: 23 Jun 2003
Posts: 943

PostPosted: Mon Aug 04, 2003 10:28 pm    Post subject: Reply with quote

One could also use app-admin/apg, which is a nice CLI password generator.
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