equal
deleted
inserted
replaced
32 \end{tabular} |
32 \end{tabular} |
33 \end{quote} |
33 \end{quote} |
34 |
34 |
35 \noindent |
35 \noindent |
36 Think of ways how you can cheat in this exam? How would you defend |
36 Think of ways how you can cheat in this exam? How would you defend |
37 against such cheats. |
37 against such cheats? |
38 |
38 |
39 \item Here is another puzzle where you can practice thinking |
39 \item Here is another puzzle where you can practice thinking |
40 like an attacker: Consider modern car keys. They |
40 like an attacker: Consider modern car keys. They |
41 wirelessly open and close the central locking system of |
41 wirelessly open and close the central locking system of |
42 the car. Whenever you lock the car, the car ``responds'' |
42 the car. Whenever you lock the car, the car ``responds'' |
51 \item And another one: A water company installed devices that |
51 \item And another one: A water company installed devices that |
52 transmit meter readings when their company car drives |
52 transmit meter readings when their company car drives |
53 by. How can this transmitted data be abused, if not |
53 by. How can this transmitted data be abused, if not |
54 properly encrypted? If you identified an abuse, then how |
54 properly encrypted? If you identified an abuse, then how |
55 would you encrypt the data so that such an abuse is |
55 would you encrypt the data so that such an abuse is |
56 prevented. Hint: Consider the fact that every person |
56 prevented? Hint: Consider the fact that every person |
57 uses approximately 120l of water every day. |
57 uses approximately 120l of water every day. |
58 |
58 |
59 %\item And another one: Nowadays everybody and their |
59 %\item And another one: Nowadays everybody and their |
60 % grandmother seems to be scared about a bomb going off at |
60 % grandmother seems to be scared about a bomb going off at |
61 % a big event, say a football game. To mitigate such a |
61 % a big event, say a football game. To mitigate such a |