Anonymity

Question 1

What does VPN do?

Answer 1

Creates a connection to a trusted server, and your internet traffic gets encrypted through this

Question 2

What 3 things are VPNs useful for?

Answer 2

1) Access company info from outside 2) Anonymise traffic, as ISP only sees you connect to VPN 3) Make your location seem the same as the server’s location

Question 3

What sort of network design does Tor use?

Answer 3

A Mix Network

Question 4

What is a Mix?

Answer 4

A Server in a Mix Network

Question 5

How does a Mix Network work? (4)

Answer 5

1) The sender encrypts the message in layers for each mix using public keys. 2) Each mix decrypts one encryption layer to reveal the next hop and the re-encrypted message. 3) Mixes reorder incoming messages before forwarding them to break the link between input and output. 4) Result data re-encrypted as it goes back on that same path

Question 6

What is an example of a Mix Network?

Answer 6

Tor

Question 7

What does Tor also support?

Answer 7

Hidden Services (hide server, e.g. Wikileaks)

Question 8

What are the 3 steps of evoting?

Answer 8

1) vote online, get code 2) vote codes shown online 3) homomorphic encryption on the votes means the votes can be counted without decrypting them