--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/uuid.lua	Mon Jan 04 12:00:03 2016 +0000
@@ -0,0 +1,32 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local random = require "util.random";
+local random_bytes = random.bytes;
+local hex = require "util.hex".to;
+local m_ceil = math.ceil;
+
+local function get_nibbles(n)
+	return hex(random_bytes(m_ceil(n/2))):sub(1, n);
+end
+
+local function get_twobits()
+	return ("%x"):format(get_nibbles(1):byte() % 4 + 8);
+end
+
+local function generate()
+	-- generate RFC 4122 complaint UUIDs (version 4 - random)
+	return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12);
+end
+
+return {
+	get_nibbles=get_nibbles;
+	generate = generate ;
+	-- COMPAT
+	seed = random.seed;
+};