Cryptography20805 marksNumerical: Rail fence cipher encryptionTransposition Techniques
How substitution ciphers are different from transposition ciphers? Given a message M="CSIT PROGRAM IS A HOT CAKE", encrypt M using Rail Fence cipher with rail size 3.
How substitution ciphers are different from transposition ciphers? Given a message M="CSIT PROGRAM IS A HOT CAKE", encrypt M using Rail Fence cipher with rail size 3. [5]
Feature Substitution Cipher Transposition Cipher --------- Basic idea Each plaintext character is replaced by another character/symbol Character identity is retained but its position is changed Operation Maps letters to other letters via a key/rule Rearranges (permutes) the sequence of letters Le...