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RE: Fwd: Rainbow Tables
From: "Nwadinobi, Edward" <Edward.Nwadinobi () uk daiwacm com>
Date: Wed, 7 Aug 2013 09:10:42 +0100

Please remove my email from your circulation list.

Thanks

Edward 





 







  
-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com] On Behalf Of Jeffrey Walton
Sent: 06 August 2013 20:50
To: Michael Peppard
Cc: security-basics () securityfocus com
Subject: Re: Fwd: Rainbow Tables

On Tue, Aug 6, 2013 at 1:04 PM, Michael Peppard <mpeppard () impole com> wrote:
"Finally, given salt predominantly in use in modern password hash 
schemes, pen testing in realistic modern conditions, are rainbow 
tables still of value?"

The sole purpose of salt is to make rainbow tables extinct. It has no 
other value ...
Salts also ensure that two users with the same password have different digested password entries in the database.

It was recently proven that salt is a good thing. "Multi-Instance Security and its Application to Password-Based 
Cryptography,"
http://eprint.iacr.org/2012/196.pdf.

Jeff

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