Question

Using Differential Crypt-analysis, the minimum computations required to decipher the DES algorithm is-

(a) 2^56

(b) 2^43

(c) 2^55

(d) 2^47

I had been asked this question in an online interview.

This interesting question is from Overview topic in division Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

Answer 1

Right answer is (d) 2^47

For explanation: Differential Crypt-analysis requires only 2^47 computations to decipher the DES algorithm.