CMSC 414 Computer and Network Security Lecture 24
CMSC 414 Computer and Network Security Lecture 24. Jonathan Katz. Mediated authentication (using a KDC). Needham-Schroeder. A KDC: N 1 , Alice, Bob KDC A: Enc KB {N 1 , “Bob”, K AB , ticket}, where ticket = Enc KB {K AB , “Alice”} A B: ticket, Enc KAB {N 2 } BA: Enc KAB {N 2 -1, N 3 }
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