Description
Hi @yaronn @bjrmatos, I need some help to resolve this problem.
I have to validate a signed xml form Uruguay's goberment (this is important tip, because I can't change the format of the data that they send if it is wrong).
I simplify here the example, but the problem is well represented. The digest value that I'm getting is different to the one they provide and sign.
The xml data they send is this:
<ns0:CFE xmlns:ns0="http://cfe.dgi.gub.uy" version="1.0">
<ns0:eResg>
<ns0:TmstFirma>2016-09-01T11:08:39-03:00</ns0:TmstFirma>
<ns0:Referencia>
<ns0:Referencia xmlns="http://cfe.dgi.gub.uy">
<ns0:NroLinRef>1</ns0:NroLinRef>
<ns0:TpoDocRef>111</ns0:TpoDocRef>
<ns0:Serie>A</ns0:Serie>
<ns0:NroCFERef>25</ns0:NroCFERef>
<ns0:FechaCFEref>2016-09-01</ns0:FechaCFEref>
</ns0:Referencia>
</ns0:Referencia>
</ns0:eResg>
</ns0:CFE> As you see there are to xmlns, one associated with the prefix ns0 and the other in the tag Referencia. I'm not sure that the xml they are send is well formatted but as I said before that is something I can't change.
The exclusive canonicalization changes this to (which is correct cause it's somehow duplicated data) :
It removes the xmlns attribute from Referencia.
<ns0:CFE xmlns:ns0="http://cfe.dgi.gub.uy" version="1.0">
<ns0:eResg>
<ns0:TmstFirma>2016-09-01T11:08:39-03:00</ns0:TmstFirma>
<ns0:Referencia>
<ns0:Referencia>
<ns0:NroLinRef>1</ns0:NroLinRef>
<ns0:TpoDocRef>111</ns0:TpoDocRef>
<ns0:Serie>A</ns0:Serie>
<ns0:NroCFERef>25</ns0:NroCFERef>
<ns0:FechaCFEref>2016-09-01</ns0:FechaCFEref>
</ns0:Referencia>
</ns0:Referencia>
</ns0:eResg>
</ns0:CFE>After several attempts I realize that the digest that they send corresponds with processing the xml without removing the xmlns in Referencia tag.
Obviously I'll have to add or edit some code to achieve this. What would be the best and simpler way of getting this to work!
thanks !