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Multi hop conformance profile and Soap With Attachments

Hi all,


I have a point of interest question regarding the multi-hop profile under AS4 with respect to Soap With Attachments.


My scenario is where a message service handler is operating in a multi-hop conformance mode and receives a Soap With Attachments message where the attachments have been compressed, signed and encrypted.

My question, is it an acceptable requirement for the message service handler operating under a multi-hop conformance profile to perform the following operations as the message is processed by the message service handler respectively:

1.      Decrypt the attachment payloads

2.      Perform signature verification

3.      Decompress the payload

4.      Verify, reformat the payload structure

5.      Compress the amended payload

6.      Sign the compressed payload

7.      Encrypt the payload

That is should the Message Service Handler operating in a multi-hop conformance mode be permitted to perform security verification and manipulate the attachment payload content?


This means the content originally intended to be sent by a sending message service handler is not the same as the message processed by the receiving message service handler.


Any insight into this topic would be greatly appreciated.


Kind regards,



Jean-Paul Berthelot

Senior Analyst Programmer

Oban Pty Ltd | 19-23 Prospect St | Box Hill Vic 3128 | Australia

t +61 3 9044 1704 | m +61 432 327 799 | f +61 3 9044 1799

e jean-paul.berthelot@obansolutions.com.au | w www.obansolutions.com.au

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