送交者: steven 于 2005-8-14, 00:31:43:
回答: the simple solution is: if it cannot be decipher, 由 steven 于 2005-8-13, 23:48:50:
is: even they block, only cipher text get blocked. Of course, I don't think there is a machine which can break full DES in 3 second yet, unless someone had made a quantum computer.