From 8a671f1d000aa0897e85a7cfa2eeaf371ea6f9d4 Mon Sep 17 00:00:00 2001
From: Tobias Eidelpes <tobias@eidelpes.info>
Date: Tue, 21 Jun 2022 18:45:07 +0200
Subject: [PATCH] Add solution for 5m

---
 exam/ex.tex | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/exam/ex.tex b/exam/ex.tex
index aa7055d..f586c92 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -353,7 +353,11 @@
       finding an isomorphism for a specific commitment and challenge which
       matches the response is hard.
 
-    \item \TODO
+    \item The size of the signature comprises the commitment, which is a hash,
+      and the response. The hash function is chosen to be $\unit[256]{bits}$ and
+      the response is $\lceil\log_2 1107\rceil\cdot 1107 = \unit[12.177]{kbit} =
+      \unit[1522.125]{bytes}$. In total, the signature is
+      $\unit[1554.125]{bytes}$ big.
 
     \item \TODO