From 7a8df2a8dfad473ba94de3dca42093270df61758 Mon Sep 17 00:00:00 2001
From: Martin Schanzenbach <mschanzenbach@posteo.de>
Date: Sun, 10 May 2020 15:46:14 +0200
Subject: [PATCH] add revocation tvg

---
 src/revocation/Makefile.am             |  12 ++-
 src/revocation/gnunet-revocation-tvg.c | 123 +++++++++++++++++++++++++
 2 files changed, 134 insertions(+), 1 deletion(-)
 create mode 100644 src/revocation/gnunet-revocation-tvg.c

diff --git a/src/revocation/Makefile.am b/src/revocation/Makefile.am
index b3b2877ca..6efd461c1 100644
--- a/src/revocation/Makefile.am
+++ b/src/revocation/Makefile.am
@@ -16,7 +16,8 @@ pkgcfg_DATA = \
   revocation.conf
 
 bin_PROGRAMS = \
- gnunet-revocation
+ gnunet-revocation \
+ gnunet-revocation-tvg
 
 
 plugin_LTLIBRARIES = \
@@ -41,6 +42,15 @@ gnunet_revocation_LDADD = \
   $(top_builddir)/src/util/libgnunetutil.la \
   $(GN_LIBINTL)
 
+gnunet_revocation_tvg_SOURCES = \
+ gnunet-revocation-tvg.c
+gnunet_revocation_tvg_LDADD = \
+  libgnunetrevocation.la \
+  $(top_builddir)/src/identity/libgnunetidentity.la \
+  $(top_builddir)/src/util/libgnunetutil.la \
+  $(GN_LIBINTL)
+
+
 lib_LTLIBRARIES = libgnunetrevocation.la
 
 libgnunetrevocation_la_SOURCES = \
diff --git a/src/revocation/gnunet-revocation-tvg.c b/src/revocation/gnunet-revocation-tvg.c
new file mode 100644
index 000000000..23a4bf020
--- /dev/null
+++ b/src/revocation/gnunet-revocation-tvg.c
@@ -0,0 +1,123 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2020 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/gnunet-revocation-tvg.c
+ * @brief Generate test vectors for revocation.
+ * @author Martin Schanzenbach
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_signatures.h"
+#include "gnunet_revocation_service.h"
+#include "gnunet_dnsparser_lib.h"
+#include "gnunet_testing_lib.h"
+#include <inttypes.h>
+
+#define TEST_EPOCHS 2
+#define TEST_DIFFICULTY 5
+
+/**
+ * Main function that will be run.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls,
+     char *const *args,
+     const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  struct GNUNET_CRYPTO_EcdsaPrivateKey id_priv;
+  struct GNUNET_CRYPTO_EcdsaPublicKey id_pub;
+  struct GNUNET_REVOCATION_PowP pow;
+  struct GNUNET_REVOCATION_PowCalculationHandle *ph;
+  char* data_enc;
+
+  GNUNET_CRYPTO_ecdsa_key_create (&id_priv);
+  GNUNET_CRYPTO_ecdsa_key_get_public (&id_priv,
+                                      &id_pub);
+  GNUNET_STRINGS_base64_encode (&id_priv,
+                                sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey),
+                                &data_enc);
+  fprintf(stdout, "Zone private key (d):\n%s\n\n", data_enc);
+  GNUNET_free (data_enc);
+  GNUNET_STRINGS_base64_encode (&id_pub,
+                                sizeof (struct GNUNET_CRYPTO_EcdsaPrivateKey),
+                                &data_enc);
+  fprintf(stdout, "Zone public key (zk):\n%s\n\n", data_enc);
+  GNUNET_free (data_enc);
+
+  GNUNET_REVOCATION_pow_init (&id_priv,
+                              &pow);
+  ph = GNUNET_REVOCATION_pow_start (&pow,
+                                    TEST_EPOCHS,
+                                    TEST_DIFFICULTY);
+  fprintf (stdout, "Difficulty (%d base difficulty + %d epochs): %d\n\n",
+           TEST_DIFFICULTY,
+           TEST_EPOCHS,
+           TEST_DIFFICULTY + TEST_EPOCHS);
+  uint64_t pow_passes = 0;
+  while (GNUNET_YES != GNUNET_REVOCATION_pow_round (ph))
+  {
+    pow_passes++;
+  }
+  GNUNET_STRINGS_base64_encode (&pow,
+                                sizeof (struct GNUNET_REVOCATION_PowP),
+                                &data_enc);
+  fprintf(stdout, "Proof:\n%s\n", data_enc);
+  GNUNET_free (data_enc);
+}
+
+
+/**
+ * The main function of the test vector generation tool.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc,
+      char *const *argv)
+{
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_END
+  };
+
+  GNUNET_assert (GNUNET_OK ==
+                 GNUNET_log_setup ("gnunet-revocation-tvg",
+                                   "INFO",
+                                   NULL));
+  if (GNUNET_OK !=
+      GNUNET_PROGRAM_run (argc, argv,
+                          "gnunet-revocation-tvg",
+                          "Generate test vectors for revocation",
+                          options,
+                          &run, NULL))
+    return 1;
+  return 0;
+}
+
+
+/* end of gnunet-revocation-tvg.c */
-- 
2.25.1