Man in the middle attack

Question

Explain what is meant by the term “man in the middle attack”?

Answer 1

If A and B exchange the message, means E intercept the message and receive the B’s public key and user Id of b, E sends its own message along with its own public key and user ID if b based upon the private key and Y. B determines the secret key and A determine k2 based upon the private key of A and Y.