[xmlsec] Why did it fail ?

[Roland Hedberg]

Hi!

Still trying to understand why a signature verification, which ought not to fail, fails.
I've made my code drop the received xml document into a file before any work is done on it.

Using this file at http://www.aleksey.com/xmlsec/xmldsig-verifier.html I get:

func=xmlSecXPathDataExecute:file=xpath.c:line=273:obj=unknown:subj=xmlXPtrEval:error=5:libxml2 library function failed:expr=xpointer(id('_bd804ee6db94c5a4f148d290274480e8'))
func=xmlSecXPathDataListExecute:file=xpath.c:line=356:obj=unknown:subj=xmlSecXPathDataExecute:error=1:xmlsec library function failed: 
func=xmlSecTransformXPathExecute:file=xpath.c:line=466:obj=xpointer:subj=xmlSecXPathDataExecute:error=1:xmlsec library function failed: 
func=xmlSecTransformDefaultPushXml:file=transforms.c:line=2395:obj=xpointer:subj=xmlSecTransformExecute:error=1:xmlsec library function failed: 
func=xmlSecTransformCtxXmlExecute:file=transforms.c:line=1226:obj=unknown:subj=xmlSecTransformPushXml:error=1:xmlsec library function failed:transform=xpointer
func=xmlSecTransformCtxExecute:file=transforms.c:line=1286:obj=unknown:subj=xmlSecTransformCtxXmlExecute:error=1:xmlsec library function failed: 
func=xmlSecDSigReferenceCtxProcessNode:file=xmldsig.c:line=1571:obj=unknown:subj=xmlSecTransformCtxExecute:error=1:xmlsec library function failed: 
func=xmlSecDSigCtxProcessSignedInfoNode:file=xmldsig.c:line=804:obj=unknown:subj=xmlSecDSigReferenceCtxProcessNode:error=1:xmlsec library function failed:node=Reference
func=xmlSecDSigCtxProcessSignatureNode:file=xmldsig.c:line=547:obj=unknown:subj=xmlSecDSigCtxProcessSignedInfoNode:error=1:xmlsec library function failed: 
func=xmlSecDSigCtxVerify:file=xmldsig.c:line=366:obj=unknown:subj=xmlSecDSigCtxSigantureProcessNode:error=1:xmlsec library function failed: 
Error: signature verification failed

Which doesn't tell me why the verification failed. 

Is there anyway by which I can find this out?

--Roland