On Tue, May 16, 2000 at 01:54:01PM -0600, Anonymous wrote:
> >look no further than DES. Whit Diffie (see his forward to 'Cracking
> >DES') was speculating about bruting DES from *before* the day it
> >was published in 1975. Read Weiner's 1993 paper on building
>
> Last year I heard Diffie say (at PECSENC meeting) that
>
> "Exportable means breakable"
>
> AES is exportable, I assume.
Under the current regs announced late
last year, ALL crypto is exportable (after
a "one time review" or a "technical review" and not to the
T-7 "terrorist" nations. see
http://cwis.kub.nl/~frw/people/koops/cls2.htm#us_exp9909).
>
> Do you agree with Diffie ?
>
If by "exportable" he was referring to the old rules, which limited
symmetric key sizes to 56 or 64 bits, then yes, "exportable" meant
breakable. But AES key specs a variable key size up to 128 (or 256, I
forget) bits. Either way, it's large enough to make brute-forcing
impractical.
--
Eric Murray www.lne.com/~ericm ericm at the site lne.com PGP keyid:E03F65E5
