10 Sep
1993
10 Sep
'93
10:37 a.m.
This chip takes a single plaintext/ciphertext pair and quickly tries DES keys until it finds one that produces the given ciphertext from the given plaintext.
It's all very well to be able to crack DES in 3.5 hours, but I don't know
of too many people who obligingly send out the plaintext and cyphertext of
a message together, or in some other way combinable. If U can get the
plaintext of a DES-encrypted msg then U don't need to dick around with DES
anyway. No-one ever said it was bulletproof; a direct consequence is that
DES users change their keys awful frequently.
David Landgren