From 3247fa4ec0dcdd78170260e958e365273ef4652b Mon Sep 17 00:00:00 2001
From: Tobias Eidelpes <tobias@eidelpes.info>
Date: Mon, 27 Jun 2022 13:46:20 +0200
Subject: [PATCH] Add solution for 3f

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

diff --git a/exam/ex.tex b/exam/ex.tex
index b42e681..aa3a954 100644
--- a/exam/ex.tex
+++ b/exam/ex.tex
@@ -185,7 +185,11 @@
       a preimage is $1/2^{55+90} = 1/2^{145}$. This is due to the fact that the
       first $\unit[55]{bits}$ and the last $\unit[90]{bits}$ have to be zeros.
 
-    \item \TODO
+    \item An adversary does not gain additional information by using inverse
+      queries additionally to forward queries. Forward queries have a better
+      probability of being successful at breaking preimage resistance and thus
+      an adversary should focus on that. The total probability is thus
+      $1/2^{101}$.
 
   \end{enumerate}