In the Diffie-Hellman key exchange protocol, Alice generates a secret value x and sends g^x to Bob. Bob generates a secret value y and sends gy to Alice. The shared secret is g^xy. This protocol is believed to be secure because there is no known efficient way to compute ______ from ______. 1.(g^xy, x and y) 2.(g^x or g^y, g^xy) 3.(g^x, x) 4.(g^xy, g^x and g^y)

In the Diffie-Hellman key exchange protocol, Alice generates a secret value x and sends g^x to Bob. Bob generates a secret value y and sends gy to Alice. The shared secret is g^xy. This protocol is believed to be secure because there is no known efficient way to compute from . 1.(g^xy, x and y) 2.(g^x or g^y, g^xy) 3.(g^x, x) 4.(g^xy, g^x and g^y)