Author Question: ________ ciphers move letters around within a message but characters are not substituted. A) ... (Read 156 times)

darbym82 · **on:** Jul 7, 2018

________ ciphers move letters around within a message but characters are not substituted.

A) Transposition
B) Substitution
C) Both A and B
D) Neither A nor B

Question 2

If a key is 43 bits long, how much longer will it take to crack it by exhaustive search if it is extended to 50 bits?

A) 7 times as long
B) 14 times as long
C) 128 times as long
D) 256 times as long