Foundations of Network and Computer Security. J ohn Black Lecture #6 Sep 10 th 2007. CSCI 6268/TLEN 5831, Fall 2007. Announcements. Quiz #1 Will return Weds Remote students should have it by today. DES -- Review. IP – Initial permutation swaps bits around for hardware purposes
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Sep 10th 2007
CSCI 6268/TLEN 5831, Fall 2007
DDESK(P) = DESK2(DESK1(P))
TDESK(P) = DESK3(DESK2(DESK1(P)))
TDESK(P) = DESK1(DES-1K2(DESK1(P)))