J. Reagle; D. Eastlake, F. Hirsch, T. Roessler <a href="http://www.w3.org/TR/2010/WD-xmlenc-core1-20100316/"><cite>XML Encryption Syntax and Processing Version 1.1.</cite></a> 16 March 2010. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2010/WD-xmlenc-core1-20100316/">http://www.w3.org/TR/2010/WD-xmlenc-core1-20100316/</a>