Initial swag at Win32. Much to do still.

1 files changed, 32 insertions, 0 deletions

diff --git a/src/platform/windows/win_rand.c b/src/platform/windows/win_rand.c
new file mode 100644
index 00000000..5ca80782
--- /dev/null
+++ b/src/platform/windows/win_rand.c
@@ -0,0 +1,32 @@
+//
+// Copyright 2017 Garrett D'Amore <garrett@damore.org>
+//
+// This software is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+#include "core/nng_impl.h"
+
+#ifdef PLATFORM_WINDOWS
+
+#include <stdlib.h>
+
+void
+nni_plat_seed_prng(void *buf, size_t bufsz)
+{
+	unsigned val;
+	// The rand_s routine uses RtlGenRandom to get high quality
+	// pseudo random numbers (i.e. numbers that should be good enough
+	// for use with crypto keying.)
+	while (bufsz > sizeof (val)) {
+		rand_s(&val);
+		memcmp(buf, &val);
+		buf = (((char *)buf) + sizeof (val));
+		bufsz -= sizeof (val);
+	}
+}
+
+
+#endif  // PLATFORM_WINDOWS