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[GNUnet-SVN] r18286 - gnunet/src/util


From: gnunet
Subject: [GNUnet-SVN] r18286 - gnunet/src/util
Date: Wed, 23 Nov 2011 20:23:03 +0100

Author: grothoff
Date: 2011-11-23 20:23:03 +0100 (Wed, 23 Nov 2011)
New Revision: 18286

Modified:
   gnunet/src/util/crypto_random.c
Log:
LRN: fixing 1956 by using a better random generator on W32

Modified: gnunet/src/util/crypto_random.c
===================================================================
--- gnunet/src/util/crypto_random.c     2011-11-23 18:57:13 UTC (rev 18285)
+++ gnunet/src/util/crypto_random.c     2011-11-23 19:23:03 UTC (rev 18286)
@@ -34,6 +34,35 @@
 
 #define LOG_STRERROR(kind,syscall) GNUNET_log_from_strerror (kind, "util", 
syscall)
 
+/* TODO: ndurner, move this to plibc? */
+/* The code is derived from glibc, obviously */
+#if MINGW
+#ifdef RANDOM
+#  undef RANDOM
+#endif
+#ifdef SRANDOM
+#  undef SRANDOM
+#endif
+#define RANDOM() glibc_weak_rand32()
+#define SRANDOM(s) glibc_weak_srand32(s)
+static int32_t glibc_weak_rand32_state = 1;
+
+void
+glibc_weak_srand32 (int32_t s)
+{
+  glibc_weak_rand32_state = s;
+}
+
+int32_t
+glibc_weak_rand32 ()
+{
+  int32_t val = glibc_weak_rand32_state;
+  val = ((glibc_weak_rand32_state * 1103515245) + 12345) & 0x7fffffff;
+  glibc_weak_rand32_state = val;
+  return val;
+}
+#endif
+
 /**
  * Create a cryptographically weak pseudo-random number in the interval of 0 
to 1.
  *




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