The Caesar Cipher has 25 different shifts to try.

How many possibilities are there to try in a random substitution cipher?

A. 25

B. 25 x 2

C. 25^2

D. 25x24x23x22x21 ... 3x2x1

D. 25x24x23x22x21 ... 3x2x1.

Explanation:

The ceasar cipher is a encryption technique, that uses a combination of information or keys to encrypt an information.

The 25 shift ceasar cipher has 25 different combinations, so the number of probable random cipher substitution is 25!,

That is = 25 * 24*23 * 22 * ... * 2*1.