Asymmetric Encryption: Public Key Cryptography and RSA Algorithm

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Questions and Answers

What is another name for Asymmetric Encryption?

  • Public key algorithms (correct)
  • Private key encryption
  • Symmetric key encryption
  • Hash functions

How many keys are used in Asymmetric Encryption to encrypt and decrypt the plain text?

  • Four keys
  • Three keys
  • Two keys (correct)
  • One key

In the analogy provided, who uses the public key for encryption?

  • Medium
  • Kebede
  • Abebe (correct)
  • Algorithm

How many keys does the user have in Asymmetric Encryption?

<p>Two keys (D)</p> Signup and view all the answers

What is required to decrypt a message encrypted using the public key in Asymmetric Encryption?

<p>The private key (D)</p> Signup and view all the answers

Why are asymmetric algorithms designed with different keys for encryption and decryption?

<p>To enhance security (C)</p> Signup and view all the answers

What is the purpose of the Diffie-Hellman algorithm?

<p>To exchange a secret key securely (B)</p> Signup and view all the answers

In asymmetric algorithms, what is the usual key length range?

<p>512 to 2048 bits (D)</p> Signup and view all the answers

What are the system parameters in the Diffie-Hellman protocol?

<p>p and g (C)</p> Signup and view all the answers

Why are asymmetric algorithms relatively slow?

<p>They involve complex computational problems such as factoring large numbers and computing discrete logarithms (A)</p> Signup and view all the answers

What problem does the Diffie-Hellman algorithm rely on for its security?

<p>Computing discrete logarithms of large numbers (A)</p> Signup and view all the answers

What are the steps involved in the Diffie-Hellman key exchange?

<p>Agree on global public elements, exchange public values, compute the shared secret key (B)</p> Signup and view all the answers

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