1 files changed, 96 insertions, 0 deletions

diff --git a/src/lib/util/test_crypto_ecdh_eddsa.c b/src/lib/util/test_crypto_ecdh_eddsa.c
new file mode 100644
index 000000000..875f479c2
--- /dev/null
+++ b/src/lib/util/test_crypto_ecdh_eddsa.c
@@ -0,0 +1,96 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2002-2015 GNUnet e.V.
+
+     GNUnet is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Affero General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+
+ */
+/**
+ * @file util/test_crypto_ecdh_eddsa.c
+ * @brief testcase for ECC DH key exchange with EdDSA private keys.
+ * @author Christian Grothoff
+ * @author Bart Polot
+ */
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include <gcrypt.h>
+
+
+static int
+test_ecdh ()
+{
+  struct GNUNET_CRYPTO_EddsaPrivateKey priv_dsa;
+  struct GNUNET_CRYPTO_EcdhePrivateKey priv_ecdh;
+  struct GNUNET_CRYPTO_EddsaPublicKey id1;
+  struct GNUNET_CRYPTO_EcdhePublicKey id2;
+  struct GNUNET_HashCode dh[2];
+
+  /* Generate keys */
+  GNUNET_CRYPTO_eddsa_key_create (&priv_dsa);
+  GNUNET_CRYPTO_eddsa_key_get_public (&priv_dsa,
+                                      &id1);
+  for (unsigned int j = 0; j < 4; j++)
+  {
+    fprintf (stderr, ",");
+    GNUNET_CRYPTO_ecdhe_key_create (&priv_ecdh);
+    /* Extract public keys */
+    GNUNET_CRYPTO_ecdhe_key_get_public (&priv_ecdh,
+                                        &id2);
+    /* Do ECDH */
+    GNUNET_assert (GNUNET_OK ==
+                   GNUNET_CRYPTO_eddsa_ecdh (&priv_dsa,
+                                             &id2,
+                                             &dh[0]));
+    GNUNET_assert (GNUNET_OK ==
+                   GNUNET_CRYPTO_ecdh_eddsa (&priv_ecdh,
+                                             &id1,
+                                             &dh[1]));
+    /* Check that both DH results are equal. */
+    GNUNET_assert (0 ==
+                   GNUNET_memcmp (&dh[0],
+                                  &dh[1]));
+  }
+  return 0;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  if (! gcry_check_version ("1.6.0"))
+  {
+    fprintf (stderr,
+             _ (
+               "libgcrypt has not the expected version (version %s is required).\n"),
+             "1.6.0");
+    return 0;
+  }
+  if (getenv ("GNUNET_GCRYPT_DEBUG"))
+    gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
+  GNUNET_log_setup ("test-crypto-ecdh-eddsa", "WARNING", NULL);
+  for (unsigned int i = 0; i < 4; i++)
+  {
+    fprintf (stderr,
+             ".");
+    if (0 != test_ecdh ())
+      return 1;
+  }
+  return 0;
+}
+
+
+/* end of test_crypto_ecdh_eddsa.c */