Digital signatures and inbound documents

Hello all,
is it possible to import document previously digitaly signed in another system.
Scenario will be to have another (partner) system in which user create document with digital sign. This document is transfered to SAP R/3 with digital sign, and it should create document which has digital sign on it.
Is this scenario possible?
Do we need to have user from partner system created in SAP system with proper authorizations or document will be signed on some other way.
TIA
Gordan

You can edit a signed PDF document (assuming you are not using the field collection feature). This will not "Invalidate" the signature, but it will change the status of the signature.
I have attached two screen shots to illustrate... To generate these, I signed a PDF, changed some data and re-validated the signature.
ValidationStatus.gif shows the status of the actual signature.
DocStatus.gif shows a "roll-up" status (meaning it checks all signatures on a doc and displays an overview) of the signed document.
Regards
Steve

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I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
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Hello Francesco,
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http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
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Kind Regards,
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Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
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so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

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