XAdES specifications

[MURATA Makoto (FAMILY Given)]

Dear colleagues,

XAdES specifications [1] and [2] from ETSI define XAdES signatures,
but they do not describe creation and validation of XAdES disnagures.
They are covered by a separate specification [3], which applies to
CAdES, PAdES, and XAdES.

I think that our revision of OPC should reference these specs (after
they become ETSI ENs).

[1] Draft ETSI EN 319 132-1 V1.0.0 (2015-06) Electronic Signatures and
Infrastructures (ESI); XAdES digital signatures; Part 1: Building
blocks and XAdES baseline signatures

https://portal.etsi.org/webapp/WorkProgram/Report_WorkItem.asp?WKI_ID=39476

[2] Draft ETSI EN 319 132-2 V1.0.0 (2015-06) Electronic Signatures and
Infrastructures (ESI); XAdES digital signatures; Part 2: Extended
XAdES signatures

https://portal.etsi.org/webapp/WorkProgram/Report_WorkItem.asp?WKI_ID=39477

[3] Draft ETSI EN 319 102-1 V1.0.0 (2015-07) Electronic Signatures and
Infrastructures (ESI); Procedures for Creation and Validation of AdES
Digital Signatures; Part 1: Creation and Validation

https://portal.etsi.org/webapp/WorkProgram/Report_WorkItem.asp?WKI_ID=39402

Cheers,
Makoto