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From: rja14@cl.cam.ac.uk (Ross Anderson)
Newsgroups: sci.crypt

Subject: Re: Variable Size Block Ciphers
Date: 21 Aug 1995 11:32:21 GMT
Organization: U of Cambridge Computer Lab, UK
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ritter@io.com (Terry Ritter) writes:

>  For some time now I have been working with some apparently new
>  ciphering structures which I call "Variable Size Block Ciphers."
>  As the name suggests, these constructs can be made to cipher blocks
>  of essentially arbitrary size (typically in byte-size steps),
>  *without* changing the number of layers or "rounds" in the cipher.

Two such ciphers appeared in 1993 - WAKE by David Wheeler and a 
proposal from Burt Kaliski and Matt Robshaw. They are both in `Fast
Software Encryption', Springer LNCS 809

Ross