Remove unicode characters

slides/1-2.tex

@@ -31,12 +31,12 @@
 				\item Keep the whole design secret?
 				\item \textbf{``Advantages''}:
 				      \begin{itemize}[<+->]
-					      \item Attacker doesn’t know how our cipher (or system, more generally,) works.
+					      \item Attacker doesn't know how our cipher (or system, more generally,) works.
 				      \end{itemize}
 				\item \textbf{Disadvantages}:
 				      \begin{itemize}[<+->]
 					      \item Figuring out how the thing works might mean a break.
-					      \item Can’t expose cipher to scrutiny.
+					      \item Can't expose cipher to scrutiny.
 					      \item Everyone needs to invent a cipher.
 				      \end{itemize}
 			\end{itemize}
@@ -156,7 +156,7 @@
 	\begin{itemize}[<+->]
 		\item How to derive $K$?
 		\item $K$ is ideally random.
-		\item True randomness isn’t practical, so $K$ is in practice pseudo-random.
+		\item True randomness isn't practical, so $K$ is in practice pseudo-random.
 		\item We need a pseudo-random uniform distribution:
 		\item If $\mathcal{S}$ is a set of $m$ items, then the uniform distribution over $\mathcal{S}$ assigns probability $\frac{1}{m}$ to each item $x \in \mathcal{S}$
 		\item In practice, this just means we need the bits to be random, unpredictable, uniformly distributed in terms of probability
@@ -220,7 +220,7 @@
 	\begin{columns}[c]
 		\begin{column}{0.5\textwidth}
 			\begin{itemize}
-				\item When we prove security, we prove what is or isn’t possible by the attacker calling \textsc{Attack}$(M)$.
+				\item When we prove security, we prove what is or isn't possible by the attacker calling \textsc{Attack}$(M)$.
 			\end{itemize}
 		\end{column}
 		\begin{column}{0.5\textwidth}

slides/1-5.tex

@@ -581,7 +581,7 @@
 		      \end{itemize}
 		\item For a 16-byte message:
 		      \begin{itemize}
-			      \item Null-oracle attack: ~4,080 queries (16 × 255)
+			      \item Null-oracle attack: ~4,080 queries (16 \times 255)
 			      \item True brute-force: ~$10^{38}$ queries ($255^{16}$)
 		      \end{itemize}
 		\item This attack is exponentially more efficient than traditional brute-force.