Number of Characters in Plaintext - IT Assignment Help

Assignment Task 

Question 1. The first task is to find N (i.e., the number of characters in plaintext)

A) Choose the last digit of your student id number. Let this digit be E. For example, if your student id number is x198762, E is 2.
B) Choose a random number between 15 and 25. Let this number be R.
C) Add R and E i.e., R+E. Let this number be N.

Question 2. Write any random plaintext with N number of characters.

Question 3.

Discuss at least three efficient methods that could be used to achieve confidentiality, integrity, authentication, and non-repudiation (all together) on the plaintext chosen in Question 2. In your discussion, describe at least three advantages and disadvantages for each of the methods.
 

• Use Block and or Stream Ciphers, hashing functions, asymmetric key cryptography or any additional methods to complete the task.

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