DES Vulnerable, Why?

Perry E. Metzger perry at imsi.com
Thu Jul 28 19:17:23 PDT 1994



KentBorg at aol.com says:
> It seems the TLAs (in a weak moment) let slip that DES was getting old and
> creaky and vulnerable.

Thats hardly news. Its so utterly obvious even without specialized
knowledge one could determine it.

> My question: if triple-DES is so damn tough to break, what is wrong with DES?
>  Triple-DES is a trivial variation on DES.

Similarly, finding the factors of the number 15 and of a 1000 bit
number are nearly the same operation -- unless you take time into
consideration. 

Please go off and read Schneier on this subject before posting again
-- I suspect that his discussion of security and key lengths and
multiple encryption is very clear and well written.

Perry






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