Security Basics mailing list archives

RE: File Encryption - Part II


From: "Milli Bit" <milli_bit () hotmail com>
Date: Mon, 22 Sep 2003 22:09:25 -0500

In my quest for passwords that are easy to remember, I wrote a small web-app "Pseudo-Random Semi-Pronounceable Password". Rather than duplicate the explanation here in email, it's on the page:
http://ganns.com/PRaSPP/

It's obviously not for corporate-level security. :) Give me feedback if you care to.




Smaller than a kilobyte, smaller than a byte, smaller even than a bit?
http://MILLIBIT.com

The Disorderly Planets game that you love now has online scoring:
http://MILLIBIT.com/Games/DisorderlyPlanets/





From: Kenneth Buchanan <K.Buchanan () Kastenchase com>
To: 'Kamal Habayeb' <mountainfury () fastmail fm>
CC: 'Rick Jones' <rwjones2001 () hotmail com>,security-basics () securityfocus com
Subject: RE: File Encryption - Part II
Date: Tue, 16 Sep 2003 13:11:07 -0400


That is a good point, and there has been some analysis done on the subject.
Such passphrases do indeed provide a reasonable level of security, although
they do tend to be hated by the average user.

On topic, anyone serious about hardening an encryption system using
passphrase-derived keys should read the PGP passphrase FAQ:
http://www.stack.nl/~galactus/remailers/passphrase-faq.html

It should give you an idea about where to start when trying to make the
weakest link as strong as possible.


-----Original Message-----
From: Kamal Habayeb [mailto:mountainfury () fastmail fm]
Sent: Tuesday, September 16, 2003 12:28 PM
To: Kenneth Buchanan
Cc: 'Rick Jones'; security-basics () securityfocus com
Subject: Re: File Encryption - Part II


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Kenneth Buchanan wrote:
| The point of EFS is to allow file/folder access only to the appropriate
| logged-on user ...

~  As a general rule, if a password can be remembered, it can be brute
| forced.

I agree with you here Kenneth, passwords are usually the weak link in
the security equation.  I am a strong believer in pass-phrases.  Using
something like IHatE8traFFic%inDMornING* would offer a strong password
and something that the user would be able to remember better than a
randomly generated strong password.

Cheers,
Kamal Habayeb
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Version: GnuPG v1.2.3 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQE/ZzoHWz5e+owG3loRAkKFAJwOji8ekRe9yuV82C7io9WEUhL+swCeNIOt
XNQnnszG7Npb+vvfAZ/zo+0=
=itM9
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