From 1dd35704fbbe11d2769267623b874ea367f247d1 Mon Sep 17 00:00:00 2001
From: Fabrice Mouhartem <fabrice.mouhartem@ens-lyon.org>
Date: Fri, 13 Apr 2018 15:46:34 +0200
Subject: [PATCH] Beginning of introduction

---
 chap-sigmasig.tex | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/chap-sigmasig.tex b/chap-sigmasig.tex
index 4b773ed..cce0d57 100644
--- a/chap-sigmasig.tex
+++ b/chap-sigmasig.tex
@@ -2,8 +2,11 @@
 \addcontentsline{tof}{chapter}{\protect\numberline{\thechapter} Signatures de groupe dynamique à base de couplages}
 \label{ch:sigmasig}
 
+%--------------------------------------------------
+In this chapter, we aim at lifting the \textit{signature with efficient protocols} from~\cite{LPY15} into the random oracle model in order to get an efficient construction.
+Signatures with efficient protocols in the Camenish and Lysyanskaya fashion~\cite{CL04} are digital signatures that comes with companion zero-knowledge proofs that allows a signature holder to prove 
 
-%-----------------------------------------------------------------------
+%--------------------------------------------------
 \section{Building blocks}
 \addcontentsline{tof}{section}{\protect\numberline{\thesection} Briques de base}