Question

1. In a scenario where Nancy and Matthew are using public key encryption, which keys will Matthew have the ability to see in his public keyring (--list-keys)?
2.    If Nancy wishes to send a message to Matthew, which key does she use to encrypt the message?
3.    If Matthew receives an encrypted message from Nancy, which key does he use to read it?
  4.    If Matthew wishes to send a message to Nancy, which key does he use to encrypt the message?
5.    If Nancy receives an encrypted message from Matthew, which key does she use to read it?
6.    What is a keyring?
7.    Which commands are used to display all of the keys in a user’s keyring?

Answer 1

Please Note: I have answered the first 4 Questions, according to HOMEWORKLIB RULES. Please Re-Post for receiving answers on the other questions.

Answer)
1. In this case, Matthew will view:

Matthew's public key
Matthew's private key
Nancy's public key

2. In this case, Matthew's public key should be used.

3. Using the public key encryption, when Matthew receives the encrypted message, the key to decrypt and read it will be, Matthew's private key.

4. Using Nancy's public key, Matthew would be able to encrypt and send the message to Nancy.

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