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Csec 630 1

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Q1. Which tool or technique from the above list would be most effective for a cryptanalyst to use to decipher a text encrypted with the Caesar cipher, and why?
I personal like all the ways that I saw in the above list. I think that a cryptanalyst would likely to use the Histogram. I personally think it is easier to read and the information that it gives is very valuable. It gives you the frequency and percent on how many times a certain character was used. Which if I think if I was a cryptanalyst this may help me out in deciphering the encrypted text.

Q2. What do you notice about the histogram results when text is encrypted with the Vigenère cipher in comparison to the results of the Caesar cipher? Why is this the case?
I really don’t see too much change however, what I have noticed from the first histogram using Caesar cipher vs. using Vigenère I noticed that E is no longer the letter with the most characters used like it was in the Caesar cipher. As a matter of fact it is between L, and K and really doesn’t give a character to use to help decipher it. We know that the letter could be a J but how many words or even phases have a lot of Js in its message? It seems that Vigenere is the better and more difficult cipher to use. Q3. There is an error in the following ciphertext representation of this quote, what is it? What should the correct ciphertext be? (Hint: when using the CrypTool there are several ways to decode one that you can use is “Playfair” encipher option, the plaintext and key provided in the lab information, and DESELECTING the “separate duplicate letters only within pairs” option)
SDAHFOWGRABSSRERIVBYBSCIMQTFNIVETGHBSNQCNCSDTDHBSNQCD ECNICIFCTIC
A

This is the playfair encryption that I received when I typed in the follow: The difference between stupidity and genius is that genius has its limits is listed above. However if you

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