RE: Fwd: Rainbow Tables

["Nwadinobi, Edward" <Edward.Nwadinobi () uk daiwacm com>]

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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