• Subject: Re: 2 interesting projects...
  • From: dhandy@xxxxxxxxxxx (Douglas Handy)
  • Date: Tue, 01 Feb 2000 18:21:53 -0500

Lief,

>but isn't that true of the twofish algorithm too?
>So why did Gene make an MI version?

No; TwoFish has been granted free use rights for *Public.

One reason Gene needed an MI version is the way the TwoFish algorithm
reuses the results of integer operations as part of the encryption
process.  When used on a single platform, the algorithm would be
symmetrical, ie would decrypt correctly.  But the Big-Endian vs
Little-Endian differences in integer storage formats in the 400 vs
Intel platforms means the files would not be cross-platform
compatible.  So Gene's MI program does a swap on every 4 bytes to
mimic the Intel format to get cross-platform support.

Doug
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