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3DES in real world
- To: cypherpunks@toad.com
- Subject: 3DES in real world
- From: Anonymous Sender <nobody@privacy.nb.ca>
- Date: Mon, 6 Mar 2000 02:03:47 -0400
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- Sender: owner-cypherpunks@toad.com
1. According to
http://www.cs.technion.ac.il/users/wwwb/cgi-bin/tr-get.cgi/1996/CS/CS0885.ps.gz
the only 112-bit secure 3DES mode is 3-ECB (others offer up to 75 bit
effective key).
2. Looking at the commercial implementations in silicon, highest
performance is achieved by pipelining, and therefore NOT by feedback
across 3-ECB as a unit, but by using some of the inner-feedback weak
modes. This is my speculation, based on publicly available docs.
Would any insiders (Hi/Fn, LSI, Rainbow) offer opinion on 2. and deny
or confirm that the highest performance mode uses outer-feedback on 3-ECB ?
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