Password-based authentication can be divided into two broad categories: and_____ A. fixed; variable B. time-stamped; fixed C. fixed; one-time D. none of the above

A hash function must meet criteria. A. two B. three C. four D. ten

A(n) can be used to preserve the integrity of a document or amessage. A. message digest B. message summary C. encrypted message D. ENCRYPTION

__________means that a sender must not be able to deny sending a message that he sent. A. Confidentiality B. Integrity C. Authentication D. Nonrepudiation

Message_____ means that the data must arrive at the reciever exactly as sent A. confidentiality B. integrity C. authentication D. Authorization