Cryptography Key Terminologies Quiz
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Questions and Answers

What is the purpose of the secret key in encryption?

  • To decrypt the ciphertext (correct)
  • To transform the plaintext to the ciphertext
  • To generate the ciphertext
  • To choose the encryption algorithm
  • What is the primary function of the decryption algorithm?

  • To scramble the message
  • To create the ciphertext
  • To produce the original plaintext (correct)
  • To encrypt the plaintext
  • What is the main characteristic of the Caesar cipher?

  • Involves simple mapping or substitution (correct)
  • Uses a secret key for encryption
  • Operates using a transposition technique
  • Produces random stream of data
  • What does the substitution technique in cryptography involve?

    <p>Replacing plaintext units with another unit based on a predefined system</p> Signup and view all the answers

    What is the basic idea of a transposition cipher?

    <p>Shuffling the positions of characters based on a specific rule</p> Signup and view all the answers

    How does the Columnar Transposition technique rearrange the plaintext?

    <p>It writes out the plaintext in rows and then reorders the columns</p> Signup and view all the answers

    What is the recipient required to know in order to decrypt a message encrypted using Columnar Cipher?

    <p>The order of columns (the key)</p> Signup and view all the answers

    What is the purpose of choosing a key in the encryption process of Columnar Cipher?

    <p>To determine the order in which the columns will be read</p> Signup and view all the answers

    How many rows are needed for the Rail Fence cipher with a keyword of six letters?

    <p>7</p> Signup and view all the answers

    What is the key in the Rail Fence cipher?

    <p>Number of rows used</p> Signup and view all the answers

    Which cipher rearranges the characters of a message based on a pattern resembling a zigzag or rail fence?

    <p>Rail Fence Cipher</p> Signup and view all the answers

    How is the plaintext 'DEFEND THE EAST WALL' encrypted using the Rail Fence cipher?

    <p>The message is written on alternate lines across the page</p> Signup and view all the answers

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