1. Information Law: Expression, Access, Privacy The right to inform The right to be informed The right to secrets

2. Copyright Printing press Printing press Player pianos Player pianos Radio Radio VCRs VCRs Digital content and the internet Digital content and the internet How does technology enhance expression? How does technology enhance expression? How should the law protect that expression? How should the law protect that expression? – Which expression is most valuable to society?

3. Privacy Intrusion upon someone’s seclusion or solitude (butting into personal stuff) Intrusion upon someone’s seclusion or solitude (butting into personal stuff) Public disclosure of embarrassing private facts about someone (telling secrets) Public disclosure of embarrassing private facts about someone (telling secrets) Publicity that puts someone in a false light in the public eye (claiming you have a certain negative viewpoint that you do not have) Publicity that puts someone in a false light in the public eye (claiming you have a certain negative viewpoint that you do not have) Using someone’s name or likeness for an advantage (using your picture in an ad without permission) Using someone’s name or likeness for an advantage (using your picture in an ad without permission)

4. The Right to be Informed Does the public have a right to all truthful information? – What kind of true information should NOT be shared? – Should we ever get rid of irrelevant information? – What about news? What counts as a news source today?

5. My Research! Is the right to expression a right to permanent expression? Once the information is out there, should someone harmed by the information be able to delete it? – Is this rewriting history? – What do we know about destroying parts of history we do not like to remember? Can we ever really delete information once it’s out there?

6. Making Information Inaccessible Steganography – hiding the existence of a message Steganography – hiding the existence of a message Cryptography – hiding the meaning of the message Cryptography – hiding the meaning of the message – Cipher – system for hiding the meaning of a message by replacing each letter in the original message with another letter. Plaintext: My dog is a mut. Plaintext: My dog is a mut. Ciphertext: Nz eph jt b nvu. Ciphertext: Nz eph jt b nvu.

7. How can we keep a secret? If you let the cipher alphabet be any rearrangement of the 26 letters, there are over 400,000,000,000,000,000,000,000,000 KEYS – Key = details for decrypting (the exact cipher alphabet to break the code) – Algorithm = encrypting method (how the plaintext was changed)

8. Sending Keys Across the Internet Trust – assume you do not really trust the path your message is traveling along and it could be intercepted, but your friend needs to get the message How can you send an encrypted message without sending the key? – We need candy…

9. Can you break the code? 1.Orxlvylooh orvw wr Pruhkhdg Vwdwh! 2.J xp x pxb. (not really, it’s just easier) 3.Wesh rp qes usff akrha qk orha? – Hint keyword: Julius Caesar 4.How could someone who is not the recipient get the candy? What can we do to protect the message?