Some issues with the current standards

Hallo all,

as briefly discussed in the telco yesterday, I would like to point
out some issues in the current standard(s), which might be worth looking at
during the maintainance process:

1. Return of at most one SignatureObject in SignResponse (core, section 3.2)

----------------------------------------------------------------------------

In section 3.2 of http://docs.oasis-open.org/dss/v1.0/oasis-dss-core-spec-v1.0-os.pdf,
the SignResponse is defined as