Module 3: Asymmetric Key Cryptography Principles
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Questions and Answers

What is the most widely used public-key cryptosystem?

  • DES
  • AES
  • DSA
  • RSA (correct)

    • What issue arises with Public Key Cryptography that compromises secrecy?

  • The sender encrypts the message with the recipient's private key
  • Anybody can decrypt the message using the recipient's public key (correct)
  • Both parties need to have the same private key
  • The sender signs the message with the sender's public key

    • In asymmetric encryption, what is the main factor that makes RSA difficult to attack?

  • Finding prime factors of composite numbers (correct)
  • Type of encryption algorithm used
  • Size of the key
  • Number of encryption rounds

    • What does the sender use to provide authentication in Public Key Cryptography?

    <p>Sender's private key</p> Signup and view all the answers

    What defines asymmetric encryption from a user's perspective regarding message decryption and signature creation?

    <p>Users cannot decrypt messages or create signatures</p> Signup and view all the answers

    What problem in symmetric encryption does public-key cryptography attempt to address?

    <p>Key distribution</p> Signup and view all the answers

    Which key in asymmetric cryptography is known to everybody and used for encryption?

    <p>Public key</p> Signup and view all the answers

    What is the purpose of key exchange in Public Key Cryptography?

    <p>To establish a session key between two parties</p> Signup and view all the answers

    How is encryption for secrecy achieved in Public Key Cryptography?

    <p>Message encrypted with recipient's public key</p> Signup and view all the answers

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