Feistel proposed that we can approximate the ideal block cipher by utilizing the concept of a __________ cipher,which is the execution of two or more simple ciphers in sequence in such a way that the final result or product is cryptographically stronger than any of the component ciphers.
A)linear
B)permutation
C)differential
D)product

Question

Quizplus · Accepted Answer

Feistel proposed the product cipher that utilizes the execution of two or more simple ciphers in sequence to achieve cryptographic strength. Therefore, the correct choice is D, i.e., product.

Feistel Proposed That We Can Approximate the Ideal Block Cipher