Slides 2.3: Finish! + move the PQ stuff to Topic 2.7

slides/2-7.tex

@@ -22,6 +22,23 @@
 	\end{itemize}
 \end{frame}
 
+\section{Post-Quantum Secure Messaging}
+% PQ3
+\begin{frame}{Apple iMessage: PQ3}
+	\bigimagewithcaption{pq3_apple.png}{Source: Apple Security Engineering and Architecture (SEAR)}
+\end{frame}
+
+\begin{frame}{Signal: PQXDH}
+\end{frame}
+
+% https://github.com/signalapp/SparsePostQuantumRatchet/
+
+\begin{frame}{Slides not complete and may contain errors}
+	\begin{itemize}
+		\item This slide deck is not finished, may contain errors, and is missing important material. Do not rely on it yet.
+	\end{itemize}
+\end{frame}
+
 \begin{frame}[plain]
 	\titlepage
 \end{frame}