[146557] in cryptography@c2.net mail archive
Re: [Cryptography] Hashes into Ciphers
daemon@ATHENA.MIT.EDU (Perry E. Metzger)
Wed Sep 4 10:49:48 2013
X-Original-To: cryptography@metzdowd.com
Date: Wed, 4 Sep 2013 10:49:33 -0400
From: "Perry E. Metzger" <perry@piermont.com>
To: "Perry E. Metzger" <perry@piermont.com>
In-Reply-To: <20130904103712.7d0493fa@jabberwock.cb.piermont.com>
Cc: =?ISO-8859-1?Q?Far=E9?= <fahree@gmail.com>,
Cryptography Mailing List <cryptography@metzdowd.com>,
Richard Salz <rich.salz@gmail.com>, radix42@gmail.com
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
On Wed, 4 Sep 2013 10:37:12 -0400 "Perry E. Metzger"
<perry@piermont.com> wrote:
> Phil Karn described a construction for turning any hash function
> into the core of a Feistel cipher in 1991. So far as I can tell,
> such ciphers are actually quite secure, though impractically slow.
>
> Pointers to his original sci.crypt posting would be appreciated, I
> wasn't able to find it with a quick search.
Answering my own question
https://groups.google.com/forum/#!original/sci.crypt/tTWR2qIII0s/iDvT3ptY5CEJ
Note that Karn's construction need not use any particular hash
function -- he's more or less simply describing how to use a hash
function of any sort as the heart of a Feistel cipher.
Perry
--
Perry E. Metzger perry@piermont.com
_______________________________________________
The cryptography mailing list
cryptography@metzdowd.com
http://www.metzdowd.com/mailman/listinfo/cryptography
