Support SHA256 (and higher) in SunMSCAPI

A DESCRIPTION OF THE REQUEST :
In the SunMSCAPI-Provider only these signature algorithms are implemented now:
SHA1withRSA
MD5withRSA
MD2withRSA

  To create secure digital signatures we need at least:
SHA256withRSA.

New alogithms should be implemented easily, because MSCAPI already supports them. But they are not registered in the provider an cannot be added at runtime.

JUSTIFICATION :
Currently (2008), the existing algorithms are not sufficient anymore.
German law enforces higher security for all new digital signatures. I expect similar laws in other countries.

Enlish Info: http://www.bundesnetzagentur.de (English) -> Areas -> Electronic Signature -> Publications and Notifications -> Suitable Algorithms

German Info: http://www.bundesnetzagentur.de -> Sachgebiete -> Qualifizierte Elektronische Signatur ->Veröffentlichungen -> Geeignete Algorithmen


CUSTOMER SUBMITTED WORKAROUND :
The only workaround would be to recompile sunmscapi.jar from the sources.
(As suggested in RFE 6578658)