Which of the following is not a problem with secret-key cryptography?
(a) You cannot authenticate which party created the message.
(b) The two people communicating must still find a way to transmit the secret key securely.
(c) A different key is required to communicate with each person to receive a message.
(d) All of the above are problems with secret-key cryptography.
Ans: (d)
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a. $24,000 b. $25,000 c. $11,000 d. $24,500
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