WebService Customs Details

Someone have experience consuming special wss ?

I need generate this values on Iris :

<dsig:DigestValue>

<dsig:SignatureValue>

you can see an example here : 

https://github.com/Axway/axway-open-docs/blob/master/conversion_outputs/apigw_polref/content_sign_message.md

for any help,  Thanks in advance