From b5b4abc98d89fa2ca98fe7e47499ae8528a10da5 Mon Sep 17 00:00:00 2001
From: Andre Henriques <andr3h3nriqu3s@gmail.com>
Date: Fri, 3 Nov 2023 16:53:22 +0000
Subject: [PATCH] Fix cw.tex

---
 cw/cw.tex | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/cw/cw.tex b/cw/cw.tex
index c6ba24b..6f5d48c 100644
--- a/cw/cw.tex
+++ b/cw/cw.tex
@@ -145,7 +145,12 @@
 	$$	
 
 	$$v=77(137,312) + 93(215,-187)=(30544, 6633)$$
-	$$r=v-w=(4, 9)$$
+	$$r=w-v=(4, 9)$$
+
+
+	\subsection*{7.2}
+	No he should not.
+	If r is not changed then we could submit to the oracle (1,0) and (2,0) and if the oracle gives us 2 cipher texts that are the same then we know that b = 1 and if they are different then we know its b=0 therefore not changing the r is not secure.