Question

Essentially, the ROT13 cipher is a multialphabet cipher consisting of 13 possible letters. (true or false)

Answer 1

True.

The ROT13 cipher is a simple letter substitution cipher that replaces each letter in the alphabet with the letter 13 positions ahead of it. It is essentially a Caesar cipher with a fixed shift of 13. Since there are 26 letters in the alphabet, the ROT13 cipher is a multialphabet cipher consisting of 13 possible letters (the 13 letters that are shifted by 13 positions).