GNS: Assert return values in key derivation.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/gnsrecord/gnsrecord_crypto.c b/src/gnsrecord/gnsrecord_crypto.c
index 175967b1e..886a93ad8 100644
--- a/src/gnsrecord/gnsrecord_crypto.c
+++ b/src/gnsrecord/gnsrecord_crypto.c
@@ -1056,6 +1056,7 @@ GNUNET_GNSRECORD_query_from_public_key (const struct
 {
   char *norm_label;
   struct GNUNET_IDENTITY_PublicKey pd;
+  ssize_t pd_len;
 
   norm_label = GNUNET_GNSRECORD_string_normalize (label);
 
@@ -1067,8 +1068,10 @@ GNUNET_GNSRECORD_query_from_public_key (const struct
                                            norm_label,
                                            "gns",
                                            &pd.ecdsa_key);
+    pd_len = GNUNET_IDENTITY_public_key_get_length (&pd);
+    GNUNET_assert (0 < pd_len);
     GNUNET_CRYPTO_hash (&pd,
-                        GNUNET_IDENTITY_public_key_get_length (&pd),
+                        pd_len,
                         query);
     break;
   case GNUNET_GNSRECORD_TYPE_EDKEY:
@@ -1077,8 +1080,10 @@ GNUNET_GNSRECORD_query_from_public_key (const struct
                                            norm_label,
                                            "gns",
                                            &(pd.eddsa_key));
+    pd_len = GNUNET_IDENTITY_public_key_get_length (&pd);
+    GNUNET_assert (0 < pd_len);
     GNUNET_CRYPTO_hash (&pd,
-                        GNUNET_IDENTITY_public_key_get_length (&pd),
+                        pd_len,
                         query);
     break;
   default: