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- Xref: sparky sci.crypt:2708 comp.security.misc:750
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!wupost!uwm.edu!ogicse!qiclab!leonard
- From: leonard@qiclab.scn.rain.com (Leonard Erickson)
- Newsgroups: sci.crypt,comp.security.misc
- Subject: Re: Crypt should be based on MD5 (was: the Crypt 16 discussion)
- Message-ID: <1992Jul21.140600.23632@qiclab.scn.rain.com>
- Date: 21 Jul 92 14:06:00 GMT
- Article-I.D.: qiclab.1992Jul21.140600.23632
- References: <2a510a22@babyoil.ftp.com> <709960260@romeo.cs.duke.edu> <PMETZGER.92Jul8120712@snark.shearson.com> <21106@rpp386.lonestar.org> <1992Jul9.035150.3220@qiclab.scn.rain.com> <62451@cup.portal.com>
- Reply-To: 70465.203@compuserve.com
- Organization: SCN Research/Qic Laboratories of Tigard, Oregon.
- Lines: 37
-
- ts@cup.portal.com (Tim W Smith) writes:
-
- >> But even with this, we got squawks about "why do we need to change
- >> passwords every 90 days?" (we couldn't push a shorter interval on them).
- >> And we had people who insisted on being able to re-use passwords.
- >>
- >> Unless you can get the users to *care* about security, they aren't
- >> going to bother.
-
- >Has anyone shown that forcing users to change passwords every so often
- >actually makes things more secure? Isn't frequent changing of passwords
- >just going to make it more likely that users will write down the passwords
- >somewhere?
-
- Well, there *are* reasons why you pretty much *have* to do periodic
- changes or accept ever increasing loss of security.
-
- We *knew* that people would give out their passwords to other users. Even
- though this was very much *against* policy. by changing the passwords we
- at least chopped off those "holes" every so often. Note that we were *trying*
- to get users to use the "grant" command, which could be used to give
- another account specific access rights in a users files ort directories.
- It was prefffered because ypu can easily *list* who you've given what rights
- to (the TLIST command).
-
- We may have had some problems *due to* the changes. But we know that they
- closed the holes at least temporarily. The users weren't doing a "I'll
- share my password with Joe", instead it'd be something like Joe saying
- "Hey, where's that report, I need it!" and the user giving Joe their
- password instead of loggining in and granting access or copying it to
- a directory joe had access to.
-
- --
- Leonard Erickson leonard@qiclab.scn.rain.com
- CIS: [70465,203] 70465.203@compuserve.com
- FIDO: 1:105/56 Leonard.Erickson@f56.n105.z1.fidonet.org
- (The CIS address is checked daily. The others infrequently)
-