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If the GCD (greatest common divisor) of the two numbers is 1, then they are__________.

  Which of the following statements is true about Message Authentication Code (MAC)? (Select all that apply.)

  Which block cipher mode of operation has a significant drawback where identical plaintext blocks consistently produce the same ciphertext blocks?

  Which of the following cryptographic hash function property states that for any given hash value h, it is computationally infeasible to find the input that produces h?

  How is a plaintext encrypted using RC4?

  Which of the following is/are true for Data Encryption Standard (DES)?

A cryptanalysis is used to break an encryption process to reveal _______.

  Given p = 11, q = 13 which are both primes. n = 11×13 = 143. (p-1)x(q-1) = 120 and choose e = 7 because 7 is a prime number and 7 has no common prime factors with any number larger than 1. Using RSA, which of the following formula is used to encrypt the plaintext m = 48 in RSA? (Note. You do not have to calculate the answer.)