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7 \section*{Homework 6} |
7 \section*{Homework 6} |
8 |
8 |
9 \HEADER |
9 \HEADER |
10 |
10 |
11 \begin{enumerate} |
11 \begin{enumerate} |
12 \item Explain briefly the purpose of the certification authority in |
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13 the public-private key encryption scheme. |
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14 |
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15 \item Explain briefly what is meant by a certification authority |
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16 becoming ``too big to fail'' when it has issued a large number |
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17 of certificates. |
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18 |
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19 \item In which situations does it make sense to install |
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20 invalid (self-signed) certificates? |
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21 |
12 |
22 |
13 |
23 %\item Zero-knowledge protocols depend on three main properties called |
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24 % completeness, soundness and zero-knowledge. Explain what they mean? |
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25 |
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26 %\item Why do zero-knowledge protocols require an NP-problem as building |
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27 % block? |
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28 |
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29 %\item Why is it a good choice in a ZKP to flip a coin when requesting a |
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30 % proof from the person who knows the secret? |
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31 |
15 |
32 \item \POSTSCRIPT |
16 \item \POSTSCRIPT |
33 \end{enumerate} |
17 \end{enumerate} |
34 |
18 |
35 \end{document} |
19 \end{document} |