1 files changed, 74 insertions, 0 deletions

diff --git a/src/lib/util/test_crypto_random.c b/src/lib/util/test_crypto_random.c
new file mode 100644
index 000000000..b776aef18
--- /dev/null
+++ b/src/lib/util/test_crypto_random.c
@@ -0,0 +1,74 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2009 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_random.c
+ * @brief testcase for crypto_random.c
+ */
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+static int
+test (enum GNUNET_CRYPTO_Quality mode)
+{
+  int buf[1024];
+  unsigned int *b2;
+  int i;
+  unsigned long long n;
+  struct GNUNET_Uuid tf;
+
+  for (i = 0; i < 1024; i++)
+    GNUNET_break (1024 > (buf[i] = GNUNET_CRYPTO_random_u32 (mode, 1024)));
+  for (i = 0; i < 10; i++)
+  {
+    b2 = GNUNET_CRYPTO_random_permute (mode, 1024);
+    if (0 == memcmp (b2, buf, sizeof(buf)))
+    {
+      fprintf (stderr, "%s", "!");
+      GNUNET_free (b2);
+      continue;
+    }
+    GNUNET_free (b2);
+    break;
+  }
+  if (i == 10)
+    return 1;                   /* virtually impossible... */
+
+  for (n = 10; n < 1024LL * 1024LL * 1024LL; n *= 10)
+    GNUNET_break (n > GNUNET_CRYPTO_random_u64 (mode, n));
+  GNUNET_CRYPTO_random_timeflake (mode,
+                                  &tf);
+  return 0;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  GNUNET_log_setup ("test-crypto-random", "WARNING", NULL);
+  if (0 != test (GNUNET_CRYPTO_QUALITY_WEAK))
+    return 1;
+  if (0 != test (GNUNET_CRYPTO_QUALITY_STRONG))
+    return 1;
+
+  return 0;
+}