full-disclosure - Senior M$ member says stop using passwords completely!

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Message-ID: <1097945204.554.11.camel@localhost>
From: frank at knobbe.us (Frank Knobbe)
Subject: Senior M$ member says stop using passwords
	completely!

On Sat, 2004-10-16 at 09:46, Tim wrote:
> Even if this was a new attack, a full rainbow table shouldn't be
> possible against a secure hash. 

True if the hashes are salted. (with more than one byte please,
otherwise they just use 256 DVDs :)

> "Pass-phrase LENGTH, not complexity defeats these attacks."
> 
> Not if your hashes are chunked like some (all?) of M$'s.  Precomputed
> chunks with a good lookup table defeats longer passwords.

It's a nice recommendation of MS to make (to use long passphrases
instead of passwords). But I don't consider 14 chars a "passphrase".
Perhaps they should enable more/all password components to handle much
longer passwords/phrases.

Let me guess, that will all be fixed in Longshot.

Cheers,
Frank

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