Question

What is the relationship between a character in the plaintext to a character is?

Answer 1

Polyalphabetic Cipher:- In a polyalphabetic cipher, each occurrence of a character can have a different substitute. The relationship between a character in the plaintext to a character in the ciphertext is a one-to-many relationship.

Answer 2

There is an improvement over the Caesar cipher. The relationship between a character in the plaintext and a character in the ciphertext is always one-to-many.

If we talk about polyalphabetic substitution, each occurrence of a character may have a different substitute. The main matrix in the Hill cipher needs to have a multiple inverse.

So as it is directing from one source to many targets, it is having an one to many relationship.