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- Path: sparky!uunet!wupost!waikato.ac.nz!comp.vuw.ac.nz!actrix!patrick
- Newsgroups: comp.bbs.misc
- Subject: Re: Searchlight (Bidirectional Flame)
- Message-ID: <1992Jul29.011702.13948@actrix.gen.nz>
- From: patrick@actrix.gen.nz (Pat Cain)
- Date: Wed, 29 Jul 1992 01:17:02 GMT
- References: <1992Jul26.195127.24773@klic.rain.com> <1992Jul28.011055.16431@panix.com> <Bs41qE.1Hy@news.cso.uiuc.edu>
- Organization: Actrix Information Exchange
- Lines: 38
-
- In article <Bs41qE.1Hy@news.cso.uiuc.edu> jvmg9796@uxa.cso.uiuc.edu (Doc) writes:
- > >2) it is contrary to the author's philosophy of BBSing. That is Frank
- > >didn't really go for "The Sysop as big brother"
- >
- > Yes, and along with that philosophy, SL doesnt even let the sysop see
- > the users' passwords. A sorry "feature" indeed. That says "well we
- > dont trust you and we think that you might share your users' passwords
- > with other sysops so you arent allowed to see."
- > So when a user forgets his password and asks you what it is, you look
- > like an idiot having to tell him "I dont know, I can only reset it
- > for you."
-
- Searchlight hashes each user password into a 3 byte string when the user
- first signs up. And when the user next logs in it hashes what
- they enter and compares it with the 3 byte string. So it's not
- really possible to tell you the password given this storage method.
-
- One disadvantage of this method is that many strings willl
- hash to the same 3 byte string .. so if FRED is your password then
- Q@@#FG may also work. The hash method is detailed in the early
- shareware versions of SL -- including Pascal source, it's
- supposed to irreversable (i.e., you can't get original pwd
- from 3 byte number). I've got a program here whichj a friend wrote
- which will take the pwd file and give you lots of strings which hash to
- any 3 bytes .. so given a user's 3 bytes in the pwd file it willl
- give you some valid passwords -- most of them being nothing like
- the original pwd. But if you combine it with an english dictionary
- then you can get back any passwords that were english words.
- Actually, it usually gives you several valid english words which
- are equivalent to any password!
-
- I think it is a good system for hiding passowrds -- it stops
- the dishonest sysops who use users passwords to get onto
- other systems where users use the same pwd. But the 3 byte
- method isn't very secure, he should change it to something
- like Rivest's MD4 or MD5 algorithms.
- --
- Pat Cain, PO Box 2060, Wellington, NZ () em: cain_p@kosmos.wcc.govt.nz
-