Ben:
> Is that true keylength or effective keylength? 3DES has an effective
> keylength of 112 bits.
Well, first of all I have to present my apologies to the list for my
double posting the other day. Seems that I slipped on the "send" key
before finalizing my message...
Now, about the effective key length vs true key length, my intention
here is not to start a "holy war" about this particular problem which
is far beyond my understanding (I'm in no way a cryptography specialist),
but what I've read about it (several times, and from several sources,
one of which being the excellent cryptography FAQ from RSA labs) is
that this 3DES "weakness" is theoretical, and that to reduce the
effective key length to 112 bits, and be able to conduct a known
plaintext attack against it, you have to be able to store 2^56 bits
(which is about 8192 _terabytes_) of data...
Anyway, French laws aren't that specific. All they talk about is a
"key length", so even if you're right, Ben, I don't want to get into
trouble just because a pen pusher will have made the wrong assumption.
;-)
Best regards,
Bruno
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