Alice, Bob, and Carlos want to communicate using symmetric cryptography. How many keys are necessary for all three to send messages to each other so that all three can read each other messages?
A) 1
B) 2
C) 3
D) 4
Answer: A
Alice, Bob, and Carlos want to communicate using symmetric cryptography. How many keys are necessary for all three to send messages to each other so that all three can read each other messages?
A) 1
B) 2
C) 3
D) 4