slides/slides05.tex
changeset 271 4796f424cf12
parent 267 37821a377c4a
child 272 4f4612d5f670
equal deleted inserted replaced
270:8f2749152f1e 271:4796f424cf12
   362 ``Normal'' protocol run:\bigskip
   362 ``Normal'' protocol run:\bigskip
   363 
   363 
   364 \begin{itemize}
   364 \begin{itemize}
   365 \item \bl{$A$} sends public key  to \bl{$B$}
   365 \item \bl{$A$} sends public key  to \bl{$B$}
   366 \item \bl{$B$} sends public key  to \bl{$A$}
   366 \item \bl{$B$} sends public key  to \bl{$A$}
   367 \item \bl{$A$} sends message encrypted with \bl{$B$}'s public key, \bl{$B$} decrypts it
   367 \item \bl{$A$} sends a message encrypted with \bl{$B$}'s public key, \bl{$B$} decrypts it
   368 with its private key
   368 with its private key
   369 \item \bl{$B$} sends message encrypted with \bl{$A$}'s public key, \bl{$A$} decrypts it
   369 \item \bl{$B$} sends a message encrypted with \bl{$A$}'s public key, \bl{$A$} decrypts it
   370 with its private key
   370 with its private key
   371 \end{itemize}
   371 \end{itemize}
   372 
   372 
   373 \end{frame}
   373 \end{frame}
   374 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
   374 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
   385   intercepts this message and send his own public key to 
   385   intercepts this message and send his own public key to 
   386   \bl{$B$}
   386   \bl{$B$}
   387 \item \bl{$B$} sends public key  to \bl{$A$} --- \bl{$C$} 
   387 \item \bl{$B$} sends public key  to \bl{$A$} --- \bl{$C$} 
   388   intercepts this message and send his own public key 
   388   intercepts this message and send his own public key 
   389   \bl{$A$}  
   389   \bl{$A$}  
   390 \item \bl{$A$} sends message encrypted with \bl{$C$}'s public key, \bl{$C$} decrypts it
   390 \item \bl{$A$} sends a message encrypted with \bl{$C$}'s public key, \bl{$C$} decrypts it
   391 with its private key, re-encrypts with \bl{$B$}'s public key 
   391 with its private key, re-encrypts with \bl{$B$}'s public key 
   392 \item similar the other way
   392 \item similar the other way
   393 \end{itemize}
   393 \end{itemize}
   394 
   394 
   395 \end{frame}}
   395 \end{frame}}