Barrons Book

• Reading

  • On pages 359-369

  • This section is a little fluffy.  Try and keep your focus - it's quite short.  As you read, try and imagine the kinds of questions you might get about these topics.  Remember the focus here  is on the AP Test.

  • Keep an eye on key terms, especially those in the bold headings. 

  • Stop and ask Mr. M or your intern for help about any questions you have.
    
    

• Questions

  • On pages 370 to379

  • Answer most or all of these questions without notes

    • Some of these may be pretty basic, but others require specific knowledge

  • Go back and check your answers

Encryption and Public Keys

• Define encryption

• Define decryption

• How does a Caesar Cipher work?

  • Given a message and key, be able to encrypt and decrypt a method

  • What are the problems with a Caesar Cipher?

• How would using a 10 digit key change the security of a Caeser Cipher?

• How does increasing a key's length impact the difficulty of cracking a cipher?

• What is symmetric encryption?

  • What's the problem with this system?

• Describe how public key encryption works in broad terms 

Public Key Cryptography

• What term is used to describe a public and private pair of keys?

• Who can use see public key?

• Who can see your private key?

• What is the point of encrypting something with my private key?