Cryptography Unit 1: Attacks on Computer and Computer Security
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Questions and Answers

What is another name for symmetric key cryptography?

  • Single key encryption (correct)
  • Private key encryption
  • Public key encryption
  • Bidirectional encryption

    • Which type of cryptography uses two keys for encryption and decryption?

  • Bidirectional cryptography
  • Single key cryptography
  • Asymmetric cryptography (correct)
  • Symmetric cryptography

    • In symmetric key cryptography, how is data decrypted?

  • Using the private key
  • Through a changing key
  • By using a constant key (correct)
  • With the public key

    • What kind of ciphers work on a single bit at a time?

    <p>Stream ciphers</p> Signup and view all the answers

    Which type of encryption technique has a public key that can be revealed to everyone?

    <p>Asymmetric encryption</p> Signup and view all the answers

    What is the primary difference between symmetric and asymmetric key cryptography?

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

    Which encryption method is known for being slower but more secure?

    <p>Asymmetric encryption</p> Signup and view all the answers

    Why is asymmetric cryptography also called public-key cryptography?

    <p>Because it uses a public and private key pair</p> Signup and view all the answers

    What is the defining characteristic of stream ciphers?

    <p>They work on small chunks of data at once</p> Signup and view all the answers

    In asymmetric cryptography, what is the purpose of the private key?

    <p>To decrypt data originally encrypted with the public key</p> Signup and view all the answers

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