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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:20:30 ADT
Bruce Schneier (schneier@counterpane.com)
Thu, 16 Jul 1998 21:29:49 -0500
At 08:51 PM 7/16/98 -0400, Ian Clysdale wrote:
>> In some applications, there's still a big speed issue with that. I have no
>> idea about CAST's speed, but, if my memory serves me right,
>> Twofish-over-Blowfish would be 2-3 times faster than 3DES.
>>
> As a totally unscientific answer to this question, I just threw
>together a really quick program that encrypted 100 megabytes of data. Using
>the CAST-128 and 3DES implementations from our beta Java toolkit here at
>Entrust, it took 47 seconds to encrypt 100M using CAST-128, and 197 seconds
>to do so using 3DES. (Note that Java is legendarily slow, especially for
>number-crunching.) The CAST implementation isn't stunningly optimized -
>speeding it up is on my to-do list before the final release.
> It's a noticeable difference.
My Twovish paper compares the speeds of various block ciphers. Also see the Blowfish webpage.
Bruce
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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:20:30 ADT