The Vigenère cipher works as a
A)Asymmetric encryption cipher
B)Transposition and substitution cipher
C)Polyalphabetic transposition cipher
D)Polyalphabetic substitution cipher

Question

Quizplus · Accepted Answer

The Vigenère cipher is a polyalphabetic substitution cipher, meaning that it substitutes each plaintext letter with a cipher letter based on a key. The cipher alphabet for each letter in the plaintext is determined by a repeating keyword. Therefore, the Vigenère cipher is a type of polyalphabetic substitution cipher.

The Vigenère Cipher Works as a