Vernam Cipher

Why
The Vernam Cipher allows us to quickly encode a message once.

What
The Vernam Cipher is one of the simplest polyalphabetic substitution ciphers

Relationship to the One-Time Pad Cipher
The one time Vernam Cipher (No tiling of keys, key must be $$n$$ bits is also referred to as the one-time pad cipher

How
To encode a message using the Vernam Cipher, we must first have a binary message of $$n$$ bits and then pick a set of binary keys. If the number of bits in the keys are less than $$n$$, then we tile them up. Then, we XOR the message and the binary keys together.