\xcalways\subsection{Security notions and attacks}\x
-%%% * Security notions and attacks: semantic security and find-then-
-%%% guess indistinguishability; left-or-right and real-or-random
-%%% indistinguishability; chosen plaintext and chosen ciphertext
-%%% (lunchtime and adaptive) attacks; non-malleability; plaintext
-%%% awareness; funny abbreviations (e.g., IND-CPA, NM-CCA2).
-
\begin{slide}
\head{Security notions for encryption}
\begin{slide}
\topic{adversarial goals}
- \head{Encryption: adversarial goals 1}
+ \resetseq
+ \head{Encryption: adversarial goals \seq}
\begin{description}
\item [Indistinguishability (find-then-guess)] The adversary chooses two
\end{slide}
\begin{slide}
- \head{Encryption: adversarial goals 2}
+ \head{Encryption: adversarial goals \seq}
\begin{description}
\item [Indistinguishability (left-or-right)] The adversary is given an
\end{slide}
\begin{slide}
- \head{Encryption: adversarial goals 3}
+ \head{Encryption: adversarial goals \seq}
\begin{description}
\item [Non-malleability] An adversary cannot transform a ciphertext such