RE: key storage

["Brown, James F." <James.F.Brown () FMR com>]

You're going to use the SHA-1 hash of the passphrase as the actual key
for the symmetric encryption, right?

================================
James F. Brown  CISM, CISA
Sr. Director, Information Security
Fidelity Investments
james.f.brown () fmr com
http://www.fidelity.com


-----Original Message-----
From: Ajay [mailto:abra9823 () mail usyd edu au] 
Sent: Saturday, August 28, 2004 12:25 AM
To: Brown, James F.
Cc: George Capehart; webappsec () securityfocus com
Subject: RE: key storage


thanks.
from responses on other mailing lists, i am moving towards the idea of
having some sort of proxy server application which at startup is
supplied
a passphrase. it uses the passphrase to decrypt a passphrase encrypted
file and loads keys from there. the file itself can be removed then
my main application can then query the proxy when it needs the keys.
ofcourse this introduces the problem of securing the exchange between
the
main and the proxy.
the reason i have the proxy in the first place is because my main app is
a
bunch of cgi scripts where state is stored by only writing to a file and
i
do not have access to the webserver where the application is hosted.
it will all be remarkable slow though...

cheers

--
Ajay Brar,

Quoting "Brown, James F." <James.F.Brown () FMR com>:

> Chapter 8 in Applied Cryptography only discussed key storage in areas
> where users are involved. If you have an server application that uses
> crypto with no users involved, it doesn't offer much help. I'll check
> Bruce's newer book "Practical Cryptography" to see if he's addressed
> that topic, but I won't be able to report on it until Monday.
>
> ================================
> James F. Brown  CISM, CISA
> Sr. Director, Information Security
> Fidelity Investments
> james.f.brown () fmr com
> http://www.fidelity.com
>
>
> -----Original Message-----
> From: George Capehart [mailto:gwc () acm org]
> Sent: Thursday, August 26, 2004 1:41 PM
> To: webappsec () securityfocus com
> Subject: Re: key storage
>
>
> On Wednesday 25 August 2004 21:12, Ajay allegedly wrote:
> > and also is there any significant paper on key storage - a journal
or
> > conference paper?
> > its for my thesis and it would be nice if i could quote a the
> > findings of some paper
>
> Ajay,
>
> There has been *lots* written about key storage.  It's a pretty
> important topic . . . :>  Google is your friend.  A great place to
> start, though is Chapter 8 (Key Management) in _Applied_Cryptology
> (ISBN 0-471-11709-9) by Bruce Schneier.
>
> Cheers,
>
> George Capehart
> --
> George W. Capehart
>
> Key fingerprint:  3145 104D 9579 26DA DBC7  CDD0 9AE1 8C9C DD70 34EA
>
> "With sufficient thrust, pigs fly just fine."  -- RFC 1925


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