GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
* @author Christian Grothoff
*/
#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_crypto_lib.h"
-#include "gnunet_os_lib.h"
+#include "gnunet_util_lib.h"
#include <gcrypt.h>
#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
/* TODO: ndurner, move this to plibc? */
/* The code is derived from glibc, obviously */
-#if MINGW
+#if !HAVE_RANDOM || !HAVE_SRANDOM
#ifdef RANDOM
#undef RANDOM
#endif
SRANDOM (seed);
}
+/**
+ * @ingroup crypto
+ * Fill block with a random values.
+ *
+ * @param mode desired quality of the random number
+ * @param buffer the buffer to fill
+ * @param length buffer length
+ */
+void
+GNUNET_CRYPTO_random_block (enum GNUNET_CRYPTO_Quality mode, void *buffer, size_t length)
+{
+#ifdef gcry_fast_random_poll
+ static unsigned int invokeCount;
+#endif
+ switch (mode)
+ {
+ case GNUNET_CRYPTO_QUALITY_STRONG:
+ /* see http://lists.gnupg.org/pipermail/gcrypt-devel/2004-May/000613.html */
+#ifdef gcry_fast_random_poll
+ if ((invokeCount++ % 256) == 0)
+ gcry_fast_random_poll ();
+#endif
+ gcry_randomize (buffer, length, GCRY_STRONG_RANDOM);
+ return;
+ case GNUNET_CRYPTO_QUALITY_NONCE:
+ gcry_create_nonce (buffer, length);
+ return;
+ case GNUNET_CRYPTO_QUALITY_WEAK:
+ /* see http://lists.gnupg.org/pipermail/gcrypt-devel/2004-May/000613.html */
+#ifdef gcry_fast_random_poll
+ if ((invokeCount++ % 256) == 0)
+ gcry_fast_random_poll ();
+#endif
+ gcry_randomize (buffer, length, GCRY_WEAK_RANDOM);
+ return;
+ return;
+ default:
+ GNUNET_assert (0);
+ }
+}
+
/**
* Produce a random value.
LOG (GNUNET_ERROR_TYPE_INFO, _("Starting `%s' process to generate entropy\n"),
"find");
genproc =
- GNUNET_OS_start_process (GNUNET_NO, 0,
+ GNUNET_OS_start_process (GNUNET_NO, 0,
NULL, NULL, "sh", "sh", "-c",
"exec find / -mount -type f -exec cp {} /dev/null \\; 2>/dev/null",
NULL);
}
-void __attribute__ ((constructor))
+void __attribute__ ((constructor))
GNUNET_CRYPTO_random_init ()
{
gcry_error_t rc;
if ((rc = gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0)))
FPRINTF (stderr, "Failed to set libgcrypt option %s: %s\n", "ENABLE_QUICK_RANDOM",
gcry_strerror (rc));
-
+
#ifdef GCRYCTL_INITIALIZATION_FINISHED
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
#endif
}
-void __attribute__ ((destructor))
+void __attribute__ ((destructor))
GNUNET_CRYPTO_random_fini ()
{
gcry_set_progress_handler (NULL, NULL);