Question

Which of the following is the correct encryption statement representation for the XTS-AES mode?

(a) E(K1,P) XOR T

(b) E(K2,T) XOR P

(c) E(K1,T XOR P) XOR P

(d) E(K1,P XOR T) XOR T

This question was addressed to me in quiz.

My doubt stems from Overview topic in chapter Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

Answer 1

Right choice is (d) E(K1,P XOR T) XOR T

For explanation I would say: The correct encryption representation would be : C = E(K1,P XOR T) XOR T.