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- Xref: sparky alt.security:4043 sci.crypt:2780
- Path: sparky!uunet!mcsun!uknet!acorn!eoe!ahaley
- From: ahaley@eoe.co.uk (Andrew Haley)
- Newsgroups: alt.security,sci.crypt
- Subject: Re: passwd security check
- Message-ID: <1347@eouk9.eoe.co.uk>
- Date: 30 Jul 92 09:35:42 GMT
- References: <Bs5rzn.HF0@solbourne.com>
- Organization: EO Europe Limited, Cambridge, UK
- Lines: 27
- X-Newsreader: Tin 1.1 PL3
-
- imp@solbourne.com (Warner Losh) writes:
- : In article <1345@eouk9.eoe.co.uk> ahaley@eoe.co.uk (Andrew Haley) writes:
- : >There are weak keys (e.g. 01 01 01 01 01 01 01 01) which do no real
- : >scrambling at all, and some semi weak keys which do very little. In
- : >fact, these keys are very useful for testing DES implementations.
- : >You'd have to be pretty determined to get these into an ASCII
- : >terminal, though.
- :
- : Are you sure about this? Assuming that your key one of the ones that
- : has little protection, then it looks typable to me. If DES uses only
- : 7-bits of each byte, then the sequence that you describe would be
- : ",U,U,U,U" which is pretty easy to type. If DES used all 8-bits in
- : each byte for the key, then the password would be "UUUUUUUU" Either
- : way, the password is easily typable.
- :
- : Warner
- :
- :
- : --
- : Warner Losh imp@Solbourne.COM
- : Interview Horror Story #882: "It's pretty informal around here.
- : Thursdays are clothing optional.."
-
- How do you get from eight bytes of 01 hex to ",U,U,U,U"? I don't
- understand...
-
- Andrew.
-