hws/hw06.tex
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     9 \HEADER
     9 \HEADER
    10 
    10 
    11 \begin{enumerate}
    11 \begin{enumerate}
    12 \item Explain briefly the purpose of the certification authority in
    12 \item Explain briefly the purpose of the certification authority in
    13 the public-private key encryption scheme.
    13   the public-private key encryption scheme.
    14 
    14 
    15 \item Explain briefly what is meant by a certification authority
    15 \item Explain briefly what is meant by a certification authority
    16   becoming ``too big to fail'' when it has issued a large number 
    16   becoming ``too big to fail'' when it has issued a large number 
    17   of certificates.
    17   of certificates.
    18 
    18 
    19 \item In which situations does it make sense to install
    19 \item In which situations does it make sense to install
    20       invalid (self-signed) certificates?
    20   invalid (self-signed) certificates?
       
    21 
    21 
    22 
    22 %\item Zero-knowledge protocols depend on three main properties called
    23 %\item Zero-knowledge protocols depend on three main properties called
    23 %  completeness, soundness and zero-knowledge.  Explain what they mean?
    24 %  completeness, soundness and zero-knowledge.  Explain what they mean?
    24 
    25 
    25 %\item Why do zero-knowledge protocols require an NP-problem as building
    26 %\item Why do zero-knowledge protocols require an NP-problem as building