Which of the following correctly defines poly alphabetic cipher?
A. a substitution based cipher which uses multiple substitution at different positions
B. a substitution based cipher which uses fixed substitution over entire message
C. a transposition based cipher which uses multiple substitution at different positions
D. a transposition based cipher which uses fixed substitution over entire message
Answer: Option A
This Question Belongs to Data Structure >> Miscellaneous On Data Structures
Join The Discussion