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1. We assume Z26 ={0, 1, …, 25} is the alphabet for One-Time Pad, and the Plaintext space = Ciphertext space = Key space = (Z26)5. If the plaintext is (11, 8, 5, 19, 22) and the key is (2, 20, 15, 10, 6), what is the ciphertext? (   ) (13, 2, 20, 3, 2). (13, 28, 20, 29, 28). (13, 28, 20, 29, 2) (13, 24, 6, 23, 24).

1. We assume Z26 ={0, 1, …, 25} is the alphabet for One-Time Pad, and the Plaintext space = Ciphertext space = Key space = (Z26)5. If the plaintext is (11, 8, 5, 19, 22) and the key is (2, 20, 15, 10, 6), what is the ciphertext? (   ) (13, 2, 20, 3, 2). (13, 28, 20, 29, 28). (13, 28, 20, 29, 2) (13, 24, 6, 23, 24).

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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1. We assume Z26 ={0, 1, …, 25} is the alphabet for One-Time Pad, and the Plaintext space = Ciphertext space = Key space = (Z26)5. If the plaintext is (11, 8, 5, 19, 22) and the key is (2, 20, 15, 10, 6), what is the ciphertext? (   )

  1. (13, 2, 20, 3, 2).
  2. (13, 28, 20, 29, 28).
  3. (13, 28, 20, 29, 2)
  4. (13, 24, 6, 23, 24).

 

2. We assume Z26 ={0, 1, …, 25} is the alphabet for One-Time Pad, and the Plaintext space = Ciphertext space = Key space = (Z26)5. If the ciphertext is (11, 24, 5, 19, 22) and the key is (2, 20, 2, 10, 23), what is the decrypted plaintext? (   )

  1. (13, 18, 7, 3, 19).
  2. (9, 4, 7, 29, 25).
  3. (13, 18, 3, 29, 25)
  4. (9, 4, 3, 9, 25).

3. For the binary version of One-Time Pad, if the ciphertext is 10110010 and the key is 01011010, what is the corresponding plaintext? (  )

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