From 020ddeca0a98028a026a19ff3b9e524e5652c6e3 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 25 Sep 2018 10:20:16 +0200
Subject: no unblinding for \sigma_x

---
 taler-fc19/paper.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taler-fc19/paper.tex b/taler-fc19/paper.tex
index e69c073..2d173b7 100644
--- a/taler-fc19/paper.tex
+++ b/taler-fc19/paper.tex
@@ -790,7 +790,7 @@ We require the following two security properties for $\textsc{BlindSign}$:
            m \randsel M,  \\
 	   \sigma \leftarrow \algo{UnblindSig}_{BS}(r, m, \algo{Sign}_{BS}(\V{sk}, \algo{Blind}_{BS}(\mathcal{S}(\V{sk}), m)) ) \\
 	   x \randsel \overline{M}, \\
-	   \sigma_x \leftarrow \algo{UnblindSig}_{BS}(r, x, \algo{Sign}_{BS}(\V{sk}, \algo{Blind}_{BS}(\mathcal{S}(\V{sk}), x)) )
+	   \sigma_x \leftarrow \algo{Sign}_{BS}(\V{sk}, \algo{Blind}_{BS}(\mathcal{S}(\V{sk}), x))
           \end{array}
 	   \right\}. \]
   \item \emph{unforgeability}:  An adversary that requests $k$ signatures with $\algo{Sign}_{BS}$
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