Hello Param,

From your description, you're going to do some message signing against a
certain webservice's soap message, correct?

As for message signing, do you mean perform encryption or digit signing on
the webservice SOAP message. Generally, given the public key, we can only
encrypt message or use it to verify digital signature on the received
message, but can not perform digit signing. Do you mean you want to use the
given public to verify the signed message from your partner?

If so, you need to get how your partner will sign the webservice SOAP
message ,will it use any existing component like WSE or manually use XML
signing/encrypt API to sign part of the SOAP message.  There're existing
classes in .net framework which can help perform XML encryption and
signing.  

Please feel free to let me know if there is anything else I missed.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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