THE QUESTION IS BASED ON THE FIRST QUESTION BUT I NEED A HELP WITH QUESTION 2 ONLY THANK YOU Suppose we define an encryption scheme as follows The key will be four elements k 1, k 2, k 3 and k 4 in 26 The message space will be sequences of elements of 26 of length 6 The ciphertext space will be the same as the message space The encryption algorithm is the following Given a key k 1, k 2, k 3 and k 4 and a message , (a 1, a 2, a 3, a 4, a 5, a 6 ), the corresponding ciphertext is (b 1, b 2, b 3, b 4, b 5, b 6) , where 2, C a WA 9 e d Dale a ave 98 Q1, Part d (BONUS) Recover the key used to produce the known plaintext pair 99 1001 Answer here (with work ) 1012 1023 103 4 104 111 Question 2 You may know that the cipher described in Question 1 is the Hill Cipher and that the key elements k1, kg, kg and k4 NL However let us ignore this fact and suppose that any four elements in 20 can be a key 112 119 Question 2, part a How many keys are there in the Hill Cipher described above 120, 1211 Answer here 122

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Question: THE QUESTION IS BASED ON THE FIRST QUESTION ! BUT I NEED A HELP WITH QUESTION 2 ONLY THANK YOU Suppose we define an encryption

THE QUESTION IS BASED ON THE FIRST QUESTION ! BUT I NEED A HELP WITH QUESTION 2 ONLY THANK YOU

Suppose we define an encryption scheme as follows. The key will be four elements k_1,k_2, k₃ and k₄ in THE QUESTION IS BASED ON THE FIRST QUESTION ! BUT I ₂₆. The message space will be sequences of elements of NEED A HELP WITH QUESTION 2 ONLY THANK YOU Suppose we define ₂₆ of length 6. The ciphertext space will be the same as the message space.

The encryption algorithm is the following. Given a key k_1, k_2, k₃and k₄ and a message , (a_1,a_2, a_3, a_4, a_5, a₆ ), the corresponding ciphertext is (b_1,b_2,b_3,b_4,b_5, b₆₎ , where: an encryption scheme as follows. The key will be four elements k1,k2,

k3 and k4 in 26. The message space will be sequences of

2, C = a WA 9 e d Dale a ave 98 Q1, Part d (BONUS) Recover the key used to produce the known plaintext pair. 99 1001 Answer here (with work!) 1012 1023 103 4 104 111 Question 2 You may know that the cipher described in Question 1 is the Hill Cipher and that the key elements k1, kg, kg and k4. NL However let us ignore this fact and suppose that any four elements in 20 can be a key 112 119 Question 2, part a How many keys are there in the Hill Cipher described above? 120, 1211 Answer here 122

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3. How might you apply these learnings to the challenges you face currently?

1. What will you say to Diane? Are there additional questions you would like to ask?

2. What advice will you give her? What do you think are some of the sources of her stress? How will you work with her to develop strategies for reducing her stress?