Split stuff from util to PlatformMacros and RandomNumbers

modules/ripple_basics/system/ripple_RandomNumbers.cpp

@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+/*
+	Copyright (c) 2011-2013, OpenCoin, Inc.
+
+	Permission to use, copy, modify, and/or distribute this software for any
+	purpose with  or without fee is hereby granted,  provided that the above
+	copyright notice and this permission notice appear in all copies.
+
+	THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+	WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES OF
+	MERCHANTABILITY  AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+	ANY SPECIAL,  DIRECT, INDIRECT,  OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+	WHATSOEVER  RESULTING  FROM LOSS OF USE, DATA OR PROFITS,  WHETHER IN AN
+	ACTION OF CONTRACT, NEGLIGENCE  OR OTHER TORTIOUS ACTION, ARISING OUT OF
+	OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+void getRand(unsigned char *buf, int num)
+{
+#ifdef PURIFY
+	memset(buf, 0, num);
+#endif
+	if (RAND_bytes(buf, num) != 1)
+	{
+		assert(false);
+		throw std::runtime_error("Entropy pool not seeded");
+	}
+}
+