From 02962b4f124f2e129bf33366359bbe111e72e2f9 Mon Sep 17 00:00:00 2001
From: Marcello Stanisci <marcello.stanisci@inria.fr>
Date: Thu, 18 May 2017 13:44:07 +0200
Subject: auditor doesn't sign a zero-length list of denominations

---
 src/auditor/taler-auditor-sign.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/auditor/taler-auditor-sign.c')

diff --git a/src/auditor/taler-auditor-sign.c b/src/auditor/taler-auditor-sign.c
index fd5169de0..d1a205b3d 100644
--- a/src/auditor/taler-auditor-sign.c
+++ b/src/auditor/taler-auditor-sign.c
@@ -271,6 +271,15 @@ main (int argc,
     return 1;
   }
   dks_len = in_size / sizeof (struct TALER_DenominationKeyValidityPS);
+  if (0 == dks_len)
+  {
+    fprintf (stderr,
+             "Denomination list has length zero, signature not produced.\n");
+    GNUNET_DISK_file_close (fh);
+    GNUNET_free (eddsa_priv);
+    return 2;
+  
+  }
   kv.purpose.purpose = htonl (TALER_SIGNATURE_AUDITOR_EXCHANGE_KEYS);
   kv.purpose.size = htonl (sizeof (struct TALER_ExchangeKeyValidityPS));
   GNUNET_CRYPTO_hash (auditor_url,
-- 
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