Japanese position on the introduction of XAdES to OPC.

[MURATA Makoto]

Dear colleagues,

This mail is to describe the Japanese position on the
introduction of XAdES to OPC.  Japan believes that the
ongoing revision of OPC (Open Packaging Conventions)
should use the first part of the new version of XAdES and
nothing else.

As we have discussed, there are two versions of XAdES.  An existing
version of XAdES is documented in ETSI technical specifications, while
a new and incompatible version is expected to become ENs (European
Standards) in one year.

The first version is already implemented by Microsoft Office.
This means that, if we introduce this version of XAdES to OPC
as a standard, we will run the risk of making the current implementation
by Microsoft non-conformant.  As you know, Japanese XAdES
experts are unhappy with the MS  implementation.

The latest version of XAdES consists of two specifications.
Apparently, Europe is committed to the first part.  The second part
appears to be an alibi for not abandoning some
features of the old version.

Moreover, the first part does not use any external files.  But the
second does.  This means that if such external files exist in an OPC
package, they look like orphans and will be thrown away by many
implementations including MS Office.  To avoid this problem, we will
have to introduce relationship types.   Japan does not think that the
second part has advantages significant enough for this additional effort.



Regards,
Makoto
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