1. The ciphertext CRWWZ was encrypted using an affine cipher. The plaintext starts with ha.Decrypt the message.2. Decrypt the following Caesar encryptions by trying the various possible shifts until you obtainreadable text. 'NJACQYAXERMNBNWXDPQCXBJCRBOHNENAHVJWBWNNMBKD-CWXCNENAHVJWBPANNM’3. (a) Suppose that you have an alphabet of 26 letters how many possible simple substitutionciphers are there?(b) Determine the number of keys in an Affine Cipher in an alphabet system withi. 32 alphabetsii. 100 alphabets

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Asked Jan 23, 2020
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1. The ciphertext CRWWZ was encrypted using an affine cipher. The plaintext starts with ha.
Decrypt the message.
2. Decrypt the following Caesar encryptions by trying the various possible shifts until you obtain
readable text. 'NJACQYAXERMNBNWXDPQCXBJCRBOHNENAHVJWBWNNMBKD-
CWXCNENAHVJWBPANNM’
3. (a) Suppose that you have an alphabet of 26 letters how many possible simple substitution
ciphers are there?
(b) Determine the number of keys in an Affine Cipher in an alphabet system with
i. 32 alphabets
ii. 100 alphabets
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1. The ciphertext CRWWZ was encrypted using an affine cipher. The plaintext starts with ha. Decrypt the message. 2. Decrypt the following Caesar encryptions by trying the various possible shifts until you obtain readable text. 'NJACQYAXERMNBNWXDPQCXBJCRBOHNENAHVJWBWNNMBKD- CWXCNENAHVJWBPANNM’ 3. (a) Suppose that you have an alphabet of 26 letters how many possible simple substitution ciphers are there? (b) Determine the number of keys in an Affine Cipher in an alphabet system with i. 32 alphabets ii. 100 alphabets

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Expert Answer

Step 1
  1.  

The given Caesar encryptions is OKBDRZBYFSNOCOXYEQRDYCKDSCPIOFOBIWKXCXOONCLEDXYDOFOBIWKXCQBOON.

In order to obtain a readable text, try various possibilities as shown below.

Step 2

Case 1: Key 1

OKBDRZBYFSNOCOXYEQRDYCKDSCPIOFOBIWKXCXOONCLEDXYDOFOBIWKXCQBOON

Case 2: Ke...

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