--- a/slides/slides05.tex	Wed Oct 29 19:36:15 2014 +0000
+++ b/slides/slides05.tex	Wed Oct 29 21:58:08 2014 +0000
@@ -364,9 +364,9 @@
 \begin{itemize}
 \item \bl{$A$} sends public key  to \bl{$B$}
 \item \bl{$B$} sends public key  to \bl{$A$}
-\item \bl{$A$} sends message encrypted with \bl{$B$}'s public key, \bl{$B$} decrypts it
+\item \bl{$A$} sends a message encrypted with \bl{$B$}'s public key, \bl{$B$} decrypts it
 with its private key
-\item \bl{$B$} sends message encrypted with \bl{$A$}'s public key, \bl{$A$} decrypts it
+\item \bl{$B$} sends a message encrypted with \bl{$A$}'s public key, \bl{$A$} decrypts it
 with its private key
 \end{itemize}
 
@@ -387,7 +387,7 @@
 \item \bl{$B$} sends public key  to \bl{$A$} --- \bl{$C$} 
   intercepts this message and send his own public key 
   \bl{$A$}  
-\item \bl{$A$} sends message encrypted with \bl{$C$}'s public key, \bl{$C$} decrypts it
+\item \bl{$A$} sends a message encrypted with \bl{$C$}'s public key, \bl{$C$} decrypts it
 with its private key, re-encrypts with \bl{$B$}'s public key 
 \item similar the other way
 \end{itemize}