\newcommand{\extindent}{~\extension}
\begin{table*}[ht!]
  \scriptsize
  \centering
  \rowcolors{2}{gray!10}{white}
  \setlength{\tabcolsep}{1pt}      
  \begin{tabular}{L{2.0cm} X{0.4cm} | C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm} C{1.5cm}}
    \multicolumn{2}{c|}{Work} & Megolm & Sender Keys & Secrecy & Auth & PCS & PFS & Deniability & Symbolic & Computational & Mechanized
    \\
    \hline
    %\hhline{==|======}
    $\text{Balbas et al.}$ & \cite{Balbas_SK} & \emptyc & \fullc & \fullc & \fullc & \fullc & \fullc & \emptyc & \emptyc & \fullc & \emptyc \\
    %
    $\text{Albrecht et al. 2023}$ & \cite{Albrecht_Dowling_Jones} & \fullc & \emptyc & \fullc & \fullc & \emptyc & \emptyc & \emptyc & \emptyc & \fullc & \emptyc \\
    %
    $\text{Albrecht et al. 2025}$ & \cite{Albrecht_2025} & \emptyc & \fullc & \fullc & \fullc & \fullc & \fullc & \emptyc & \emptyc & \fullc & \emptyc \\
    %
    $\text{Ours}$ & & \fullc & \fullc & \fullc & \fullc & \fullc & \fullc & \fullc & \fullc & \emptyc & \fullc \\
  \end{tabular}\smallskip
 
  \caption{Overview of related works that study nested ratchet protocols, 
    including Megolm (underpinning Matrix) and Sender Keys (underpinning WhatsApp). We include a comparison with our own work.}
  \label{tab:symbolic-tools}
\end{table*}

