Laurence Bull, David McG. Squire, Jan Newmarch and Yuliang Zheng,
Grouping Verifiable Content for Selective Disclosure using
XML Signatures.
Tech. Rep. 2003/137, School of Computer Science and Software Engineering,
Monash University, 900 Dandenong Road, Caulfield, Victoria 3145, Australia, 2003.
This paper addresses the issue of selective disclosure of verifiable content. It extends previous work relating to Content Extraction Signatures (CES) [29] and their implementation within the XML Signature specification [10] to implement a more complex structure that encodes a richer, more flexible fragment extraction policy, which includes fragment grouping. The new extraction policy enables the signer to specify both optional and mandatory fragment associations (or groupings) for extracted content. We also show how to implement this policy using the XML Signature specification.