Date: Thu, 23 Aug 2012 14:56:55 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Re: [PATCH] Speed up VNC encryption by pre-computing DES_set_odd_parity() On 2012-08-23 00:44, Knug Carl Gustf wrote: > Hello, friends of the computer security industry! > > The attached patch speeds up VNC encryption by just over 20% on my > 64-bit Apple and Dell devices. > It should apply cleanly to the master branch of the magnum-jumbo tree. > > Most of the speed is gained by applying DES_set_odd_parity() to the > bit_flip array in advance. A few more percent increase in speed is > gained by replacing the call to DES_set_key_checked() with a call to > DES_set_key_unchecked(). Unlike the former, the latter neither does > parity nor weak DES key checks. > And a good 35% boost on core2duo. This too is committed now. magnum
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