How does public key infrastructure work?
What will be an ideal response?
Public keys are issued by a certification authority (CA). A certificate that the CA issues to a company binds a public key to the recipient's private key. In this way, if you encrypted an e-mail message using the public key of your friend Sue, you know only she would be able to decrypt the message with her private key that was mathematically related to her public key. You also know that the public key you used was indeed Sue's public key because you trust the CA that issued it.
You might also like to view...
A type parameter _____________.
a) is an identifier that is used in place of an actual type name b) can be used to declare the return type c) acts as a placeholder for the type of an argument passed to the generic method d) All of the above
Write a SELECT statement to list course data sorted by course number.
What will be an ideal response?
Create a new class called Dog that is derived from the Pet class given in Listing 6.1 of Chapter 6. The new class has the additional attributes of breed (type String) and boosterShot (type boolean), which is true if the pet has had its booster shot and false if not. Give your classes a reasonable complement of constructors and accessor methods. Write a driver program to test all your methods, then write a program that reads in five pets of type Dog and displays the name and breed of all dogs that are over two years old and have not had their booster shots.
This project would be easier to do with an array of type Dog, but how to write class constructors for arrays has not been covered, so the code to process one dog has to be repeated five times.
What is URL?
What will be an ideal response?