7. The following ciphertext 261 163 196 172 217 172 89 142 76 217 209 172 ? was produced using the Merkle-Hellman Knapsack cryptosystem for a user with a private key that consists of the sequence {5, 8,17, 36, 71}, modulus m = message. 145, and multiplier a = 82. Obtain the plaintext 8. The Rabin public-key encryption scheme is similar to RSA. Research this cryptosystem and decrypt the following ciphertext: 25292168 which was encrypted for a user with public key n = 27219809. 9. Prove that 9 u,424 if and only if 9 u,n. Hint: Use identity (1) on page 288. 10. Establish the following Fibonacci identity:

What’s the purpose of a column qualifier? When are you required to use one?

WEEK 9 ASSIGNMENT#3   Part I: Complete the following exercise:   Create the following table with the correct columns. Call your new table: student_course (see below). Populate this table with four rows. Make sure the student id column contains values that are also in the student id column of your student table. student id course id semester year Join the student and student_course table where the student id values are the same. Join the student and student_course table where the student id values are the same and year is equal to 2020. Create a select statement that will return the length of the last name column by joining the student and student_course table where the student id values are the same and enroll month is June. Once you have completed your assignment, copy and paste the script into a Word document. Part II: Complete the following exercise:    Using a subquery, select student first name where the student is in the student course table. Using a subquery, select the…

What about the students average