Polyalphabetic Cipher Polyalphabetic Cipher is an encryption method to improve the simple substitution cipher techniques by using a larger key space and making the frequency of letters analysis harder.
Polyalphabetic Cipher is a block cipher with the following properties
The key space consists of all order of K = (k1, k2, k3, … ki) i= block length Encryption of plaintext P = (p1, p2, p3 … pi) Encryption algorithm
