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- Path: sparky!uunet!psinntp!sfpp.com!longo
- From: longo@sfpp.com (Bob Longo)
- Newsgroups: comp.os.vms
- Subject: Re: PASSWORDS & SCHEMES
- Message-ID: <1993Jan9.222744.30@sfpp.com>
- Date: 9 Jan 93 22:27:44 PST
- References: <01GT8W0T1GO2006MJF@VAXF.COLORADO.EDU>
- Distribution: world
- Organization: Santa Fe Pacific Pipelines
- Lines: 48
-
- In article <01GT8W0T1GO2006MJF@VAXF.COLORADO.EDU>, DWING@UH01.Colorado.EDU (Dan Wing) writes:
- >
- > The V5.4 password checking algorithm does not allow your username to be
- > your password, or your username + username:
- >
- > $ SET PASS
- > Old password:
- > New password: DWINGDWING
- > %SYSTEM-F-PWDWEAK, password is too easy to guess; please choose another
- > string
- >
- > Mayhaps someone with source listings could detail all the various permutations
- > that are (currently) dis-allowed.
- >
-
- I looked at the sources and found the following checks in SETPWD (the SET
- PASSWORD module):
-
- o Length
- o Syntax
- o If not a generate password, and user is not DISPWDDIC, and not
- setting the system password (SET PASSWORD/SYSTEM), then
- 1) Make sure that the chosen password is not in the system
- dictionary.
- 2) Disallow any password that contains the username or node
- name.
- 3) Check plaintext password against site-specific policy.
- o User is asked to enter password again and 2nd is checked to make
- sure it matches the first.
- o Password is then hashed and checked against the history file (if
- appropriate).
-
- >
- > Using the site-specific policy, you can require that special characters such
- > as @, #, $, %, &, etc., be present in the password string. It also captures
- > the plaintext password -- I hope it goes without saying, but DON'T STORE
- > THIS ANYWHERE!
-
- I don't think so. The code first verifies password syntax and only allows
- characters are "A-Z", "0-9", "$" and "_". This check is done before the
- plaintext password policy check is invoked.
-
- -Bob Longo
- --
- ==============================================================================
- Bob Longo (longo@sfpp.com)
- Santa Fe Pacific Pipelines
- Los Angeles, CA
-