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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:19:01 ADT
Matt Blaze (mab@research.att.com)
Wed, 24 Jun 1998 19:54:23 -0400
I've generated the 256x256 difference distribution table for
the Skipjack F function. This table gives the number of
times each possible output XOR differential occurs for each possible
input differential. It is in the format of Appendix B of
Biham and Shamir's DES book, and is a simple ASCII table.
The table is BIG (65536 entries - 200K bytes). You can ftp it from:
<ftp://ftp.research.att.com/dist/mab/sj.dist>
There are a few surprising spikes in the table, but they probably
disappear after a few rounds. I haven't done anything beyond
generating the table yet.
(If you don't know what a difference distribution table is
good for, you won't be able to make much use of this one
until you understand differential cryptanalysis at the
level of Biham and Shamir's book).
-matt
The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:19:01 ADT