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Date:      Mon, 01 Jun 1998 08:02:18 +1000 (EST)
From:      Peter Jeremy <peter.jeremy@alcatel.com.au>
To:        freebsd-security@FreeBSD.ORG
Subject:   Re: MD5 v. DES?
Message-ID:  <199805312202.IAA01058@gsms01.alcatel.com.au>

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On Sat, 30 May 1998 11:33:49 +1000 (EST), "Daniel O'Callaghan" <danny@panda.hilink.com.au> wrote:
>  The reason 
>that hashing is exportable is that it is only useful for identification 
>and integrity, not privacy.
That is the official line, but it was obviously written by someone who
hadn't studied much cryptography.

Cipher feedback and output feedback block ciphers use identical
functions for both encryption and decryption.  This function can just
as easily be a one-way hash of the key and text as a traditional
encryption of text using key.

Peter
--
Peter Jeremy (VK2PJ)                    peter.jeremy@alcatel.com.au
Alcatel Australia Limited
41 Mandible St                          Phone: +61 2 9690 5019
ALEXANDRIA  NSW  2015                   Fax:   +61 2 9690 5247

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