/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
/* Block TEA (xxtea) Tiny Encryption Algorithm (c) Chris Veness 2002-2014 / MIT Licence */
/* - www.movable-type.co.uk/scripts/tea-block.html */
/* */
/* Algorithm: David Wheeler & Roger Needham, Cambridge University Computer Lab */
/* http://www.cl.cam.ac.uk/ftp/papers/djw-rmn/djw-rmn-tea.html (1994) */
/* http://www.cl.cam.ac.uk/ftp/users/djw3/xtea.ps (1997) */
/* http://www.cl.cam.ac.uk/ftp/users/djw3/xxtea.ps (1998) */
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
Uglified Tiny Encryption Algorithm from http://www.movable-type.co.uk/scripts/tea-block.html