Re: Crypto Mini-FAQ

From: Roger Schlafly (rogersc_at_mindspring.com)
Date: 08/31/03 

Date: Sun, 31 Aug 2003 07:21:47 GMT

"Quintin" <qcitxxx@btinternet.com> wrote
> See Fact 7.89 in Handbook of Applied
> Cryptography Menezes A. et al, pp 258-9.

Looking at the preceding fact in that book, there is an odd paragraph.
It says that the DES complementation property is of no help to a
cryptanalyst, but then explains how it reduces the work by a factor of 2!
The factor of 2 is correct, and it is not a major concern, but it does
indeed help in a brute force DES attack.

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