Explain why this protocol is or is not subject to a man-in-the-middle attack for Trudy to get the session key.n

[g mod p, {R1}BobJAlice [gb mod p, {R1,R2,h(gab mod p)}AlicelBob Session key: h(R1,R2,gab mod p) Alice Bob Explain why this profocol is ar is not subject to a man-in-the-middle attack for Trudy to get the session key.