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- Date: Thu, 23 Apr 1992 15:31:49 +0200
- From: "(Alain Brossard EPFL-SIC/SII)" <brossard@sasun1.epfl.ch>
- Message-Id: <9204231231.AA02241@sasun1.epfl.ch>
- To: sun-managers@eecs.nwu.edu
- Subject: passwd and improved passwords
-
-
- This is not a question, but an offer for improving the security
- of your sites. I hope that it will prove sufficiently useful to justify
- the encroachment to the rules.
-
- I think I should mention that I did a change to the Sun OS 4.1.1
- passwd to check the quality of passwords. I wanted to modify
- passwd for our Enginneering School to force the users to choose a good
- password. Using npasswd, involved making a change at compile time
- between using NIS or not, using shadow password or not, so 4 binaries
- per architecture with the knowledge that the shadow password version
- was incomplete and wrong.
-
- So I went to the sun Sources, and added a call to an external
- verification routine that I got from npasswd. This way I can garantee
- that it will work in 4.1.1 (and it also works in 4.1.2 though I
- would prefer having the 4.1.2 sources). I'm providing
- this change to net in the form of a passwd.o since I can't distribute
- the sources which are copyrighted Sun OS. With the passwd.o, you can
- link your own verification routine or use the one which is provided.
-
- This will NOT work if you are using the US Encryption Kit
- (routines have different names and I can't be bothered to provide
- a different version because of some stupid rules of the US government).
- If you are stuck in this situation then complain to your government! :-).
-
- This "kit" is available via anonymous ftp:
-
- sasun1.epfl.ch:pub/passwd.tar.Z
-
- sasun1[187]$ sum passwd.tar.Z
- 64069 58
-
- Caveat, this means that you have to trust my binaries. A lot of
- you did so for my patch to ypserv and ypxfrd, so I believe that there
- is enough interest to justify this posting. If you want source, complain
- to Sun, but they do sell ARM/ASET. However when I moved to 4.1.2, I disabled
- arm since, for me, it was causing more problems than it was solving.
-
- Diff to Sun sources is available to those who have a Sun Source
- licence: provide me with tail -10 src/bin/passwd.c and I'll be satisfied. :-)
-
- --
-
- Alain Brossard, Ecole Polytechnique Federale de Lausanne,
- SIC/SII, EL-Ecublens, CH-1015 Lausanne, Suisse, +41 21 693-2211
- brossard@sic.epfl.ch
-
-