You encrypt the message zzzzzzzzzz (there are 10 z's) using the following cryptosystem: Vigenère cipher with key length 7. Eve intercepts the ciphertext. She knows the encryption method (including key size) and knows what your plaintext is. For the

q11-  "Moral" has been encrypted with Caesar cipher to "Rtwfq". Find the key to this Caesar cipher?  Hint:  Convert the numbers into mod 26 range.  (0,1,2,3,.... 25)   a- 31 mod 26 b- 34 mod 26 c- 26 mod 26 d- None

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Pavn

In order to decode the following messages, you will need to determine the cipher used. All of them have been encrypted using one of the methods we saw in the cryptography lecture. The full key to that lecture is in canvas. Need to name the method used to decipher it and show steps in using that method. Do not hesitate to ask questions in the virtual office hours. 2. SI HT EG AS SE MD LU OH ST ON EB DR AH TA LL AR OF UO YO TE RU GI FT UO. EH TT XE NE CN ET NE SS IN AT EB AH PL AD NA DR OW DE TA LE RR OC RE HP IC.

Let k be the encipherment key for a Caesar cipher. The decipherment key is 26 – k.One of the characteristics of a public key cryptosystem is that the encipherment anddecipherment keys are different. Explain why the Caesar cipher is a secret keycryptosystem, not a public key cryptosystem?

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Encode the bold message using a one-time pad. Then reverse the process to decode the encrypted message. You may perform the calculations manually or automate by writing a computer program. Show the details of all steps in the process. MATH 221 covers the basics of Cryptography!

Is it possible for software running on a desktop computer to produce secret keys that are both safe and secret, and which can then be used in cryptographic protocols?

Question 8 please do not use a computer system generater I need to see how it's done