Re: Skipjack - (even more) optimized C source

Mark Tillotson (markt@harlequin.co.uk)
Sat, 27 Jun 1998 20:58:02 +0100

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I wrote:
| Thanks for that - I took it as the basis for a more optimized version
| (well, the F-table survives!) and added decryption.
|
| http://utter.chaos.org.uk/~markt/crypt/opt-sj.zip

Just bummed another 50% speedup - see

http://utter.chaos.org.uk/~markt/crypt/opt2-sj.zip
                                          ^

basically this version generates 2560 bytes of subkey, and pulls a
couple more tricks, to reduce the G-function to 8 cycles (instead of
around 20) (load-delays permitting...).

__Mark
[ markt@harlequin.co.uk | http://www.harlequin.co.uk/ | +44(0)1954 785433 ]
[ personal homepage http://utter.chaos.org.uk/~markt/ | fax " " 785444 ]

• Next message: Jorge C. Palma: "What does it mean and How much does it cost a healthy diet? A natural foods one !"
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