sen-material: hws/hw01.tex@7ae9a893b76f (annotated)

10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	1	\documentclass{article}
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	2	\usepackage{../style}
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	3
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	4	\begin{document}
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	5
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	6	\section*{Homework 1}
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	7
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	8	\begin{enumerate}
165 6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	9	\item {\bf (Optional)} If you want to have a look at the code
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	10	presented in the lectures, install \texttt{Node.js} available (for free) from
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	11	\begin{center}
165 6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	12	\url{http://nodejs.org}
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	13	\end{center}
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	14
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	15	It needs aslo the Node-packages Express, Cookie-Parser, Body-Parser and
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	16	Crypto. They can be easily installed using the Node package manager \texttt{npm}.
165 6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	17
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	18
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	19	\item Practice thinking like an attacker. Assume the following situation:
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	20
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	21	\begin{quote}\it
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	22	Prof.~V.~Nasty gives the following final exam question (closed books, closed notes):\bigskip
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	23
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	24	\noindent
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	25	\begin{tabular}{@ {}l}
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	26	Write the first 100 digits of pi:\\
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	27	3.\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	28	\end{tabular}
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	29	\end{quote}
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	30
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	31	\noindent
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	32	Think of ways how you can cheat in this exam? How would you defend
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	33	against such cheats.
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	34
328 7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	35	\item Here is another puzzle where you can practice thinking like an
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	36	attacker: Consider modern car keys. They wirelessly open and close
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	37	the central locking system of the car. Whenever you lock the car,
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	38	the car ``responds'' by flashing the indicator lights. Can you think
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	39	of a security relevant purpose for that? (Hint: Imagine you are in
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	40	the business of stealing cars. What attack would be easier to
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	41	perform if the lights do not flash?)
7ae9a893b76f updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 171 diff changeset	42
165 6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	43	\item Explain what hashes and salts are. Describe how they can be used
6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	44	for ensuring data integrity and storing password information.
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	45
171 6cdf4d3906e2 updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 169 diff changeset	46	\item What is the difference between a brute force attack and a
6cdf4d3906e2 updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 169 diff changeset	47	dictionary attack on passwords?
6cdf4d3906e2 updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 169 diff changeset	48
14 fd7e587c794e tuning Christian Urban <urbanc@in.tum.de> parents: 10 diff changeset	49	\item What are good uses of cookies (that is browser cookies)?
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	50
169 2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	51	\item Why is making bank customers liable for financial fraud a bad
2866fae8c1cf updated Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 165 diff changeset	52	design choice for credit card payments?
165 6f84ad98cf49 added homework Christian Urban <christian dot urban at kcl dot ac dot uk> parents: 97 diff changeset	53
10 c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	54	\end{enumerate}
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	55
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	56	\end{document}
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	57
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	58	%%% Local Variables:
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	59	%%% mode: latex
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	60	%%% TeX-master: t
c8ff4c853130 new version Christian Urban <urbanc@in.tum.de> parents: diff changeset	61	%%% End:

author	Christian Urban <christian dot urban at kcl dot ac dot uk>
	Sun, 23 Nov 2014 15:34:32 +0000
changeset 328	7ae9a893b76f
parent 171	6cdf4d3906e2
child 350	54d6fc856950
permissions	-rw-r--r--