Which of the following is FALSE about 3DES?
A) It is very slow.
B) It is expensive in regard to processing cost.
C) 3DES gives strong symmetric key encryption.
D) 3DES has a key length of 56.

Question

Quizplus · Accepted Answer

3DES (Triple DES) actually uses a key length of 168 bits, but due to the meet-in-the-middle attack, its effective security is reduced to 112 bits. It does not have a key length of 56 bits; that is the key length of the original DES (Data Encryption Standard) that 3DES was designed to improve upon.

Which of the Following Is FALSE About 3DES