Donald E Eastlake III is a Distinguished Member of Technical Staff at Motorola. He is co-chair of the joint IETF/W3C XML Digital
Signature working group, a member of the W3C
Encryption, and W3C XML Key Management System working groups, and co-author of the XML Digital Signature, XML Encryption, and Exclusive Canonicalization standards. Kitty Niles is currently a freelance technical writer. She was previously a technical writer and online help designer and developer at Digital Equipment Corporation and Process Software Corporation. Her more than two decades of involvement with computer technology have included numerous Digital and Society of Technical Communications documentation awards.