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1. Determine the output gotten from the sequence of 67 89 AB CD bytes in that there is transformation of mix columns.

2. Determine the outcome of passing through nibble substitution given that A479 represents the input, 25D5 represents the key and PT after adding the round key function.

3. Give an example of a mode of operation that is defined by the worst propagation of error.

4. Since keys are generated locally, only the current ciphertext will be affected thus the OFB transmission errors do not propagate.

5. Determine the truth value in that the XTS-AES mode is based on the concept of tweakable block cipher.

6. Determine the last two blocks of the XTS-AES mode.

7. Determine and describe the rule that is used to check for large number N given that it is a prime number.

8. Given uniformity, scalability and consistency, check for randomness.

9. The main reason for the development of RC4 was to serve the purpose of generating random bits so as to act as a PRNG. Determine the truth value in this statement.

10. Determine the Maurer's universal test for statistics.