16.3. Architecture of Public Key Cryptosystem

Try these first

1. 1.

   What is the main difference between public key and private key?

   Hint

   Consider who can access each key.

2. 2.

   Define what ciphertext is.

   Hint

   Think about what happens to a message when it is encrypted.

3. 3.

   What method does public key cryptography use to secure messages?

   • Symmetric Keys
   • Public/Private Key Pair
   • Only Private Keys

   Hint

   Recall the definition of public key cryptography.

4. 4.

   True or False: The Diffie-Hellman exchange allows for secure key exchanges without direct communication.

   • True
   • False

   Hint

   Think about how key information is exchanged.

5. 5.

   Explain the importance of key management in public key cryptography and its impact on secure communication.

   Hint

   Consider scenarios where keys may be intercepted.

6. 6.

   How would you design a new public key cryptosystem today considering modern computing capabilities?

   Hint

   Reflect on the future of computing technology.