Question

Computer Security Question about the Caesar Cipher:

Question1 2 pts The following cipher text was produced by the Caesar Cipher: The Caesar cipher cryptanalysis technique from lecture calculates the most likely keys. When the technique is applied in this case, which of the following best explains the results? o The actual key is not one of three most likely keys because word 4 does not match typical character frequencies The actual key is one the three most likely keys. o The actual key is not one of three most likely keys because word 3 is is too short for the method to work. The actual key is not one of three most likely keys because word 2 is too complex The actual key is not one of three most likely keys because word 1 is not a common word.

I also don't know this part of the problem

Hello I am not sure how to figure this out

Hello so for question 3, I think its +23 "the password is qqzzqqz"

choose the correct multiple choice

Answer 1

q1)

Option a)

The actual key is not one of the most likely keys becuase word 4 doesnt match typical character frequencies of a english word.

q2)

The most frequent characters in english are 'e' , 't' , 'a'.

Most frequent character in given text is 'n'

So according to frequency analysis attack  keys would be 'n'-'e' , 'n'-'t', 'n'-'a' , if result is negative we need to convert it into positive results by modulo 26

So keys would be

9

20

13

q3)

The PlainText is : the password is qqzzqqz