Question

The Diffie-Hellman key exchange is vulnerable to the following type of attack. An opponent Carol intercepts Alice’s public value and sends her own public value to Bob. When Bob transmits his public value, Carol substitutes it with her own and sends it to Alice. After this exchange, Carol simply decrypts any messages sent out by Alice or Bob, and then reads and possibly modifies them before re-encrypting with the appropriate key and transmitting them to the other party.

Choose all the answers that are applicable to the above scenario.

		The attack is called man-in-the-middle.
		The attack is called denial-of-services.
		This vulnerability is present bcause Diffie-Hellman key exchange does not authenticate the participants.
		Carol, Alice and Bob agree the same shared key.
		Carol and Alice agree on one shared key and Carol and Bob agree on another shared key.

Answer 1

Answer is

Attack described is call man in the middle attack

This attack is caused because diffie hellman does not authenticate the participants

Carol and alice have on shared key and caroll and bob have another shared key.

So answers are

1, 3, 5 ptions