[xmlsec] xmlsec returns error when trying to validate SAML response

Wed Mar 2 08:56:17 PST 2016

But the data *is* correct. It is being validated by SimpleSamlPHP and allows user (in this case, me) to login.

> Subject: Re: [xmlsec] xmlsec returns error when trying to validate SAML response
> To: artur513 at outlook.com; xmlsec at aleksey.com
> From: aleksey at aleksey.com
> Date: Wed, 2 Mar 2016 08:51:22 -0800
> 
> As you can see from error, the digest didn't match and signature
> was invalid.
> 
> Aleksey
> 
> On 3/2/16 8:27 AM, Artur Rychlewicz wrote:
> > OK, that changes the output, but it is still not validating:
> > 
> > func=xmlSecOpenSSLEvpDigestVerify:file=digests.c:line=249:obj=sha1:subj=unknown:error=12:invalid
> > data:data and digest do not match
> > 
> > FAIL
> > 
> > SignedInfo References (ok/all): 0/1
> > 
> > Manifests References (ok/all): 0/0
> > 
> > Error: failed to verify file "/tmp/test-new.xml"
> > 
> > 
> > I have generated SAML response moment before invoking command with
> > --id-attr that you provided, so the response itself was still valid (not
> > obsolete).
> > 
> > Artur
> > 
> >> Subject: Re: [xmlsec] xmlsec returns error when trying to validate
> > SAML response
> >> To: artur513 at outlook.com; xmlsec at aleksey.com
> >> From: aleksey at aleksey.com
> >> Date: Wed, 2 Mar 2016 07:58:51 -0800
> >>
> >> It should be
> >>
> >> --id-attr:ID urn:oasis:names:tc:SAML:2.0:protocol:Response
> >>
> >> Aleksey
> >>
> >> On 3/2/16 1:24 AM, Artur Rychlewicz wrote:
> >> > Yes, i have tried this, but it didn't help at all.
> >> >
> >> > Commands (judging from printed stack trace, they're equivalent):
> >> > xmlsec1 --verify --id-attr:ID saml2p:Response test.xml
> >> > xmlsec1 --verify test.xml
> >> >
> >> > XML file (trimmed, but you'll get the idea):
> >> > <saml2p:Response xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"
> >> > ID="uuid-fb4f8863-062c-41bd-95d9-dc7f77ccf453">
> >> > <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
> >> > <ds:SignedInfo>
> >> > <ds:CanonicalizationMethod
> >> > Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
> >> > <ds:SignatureMethod
> >> > Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
> >> > <ds:Reference URI="#uuid-fb4f8863-062c-41bd-95d9-dc7f77ccf453">
> >> > <ds:Transforms>
> >> > <ds:Transform
> >> > Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
> >> > <ds:Transform
> >> > Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
> >> > </ds:Transforms>
> >> > <ds:DigestMethod
> >> > Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
> >> >
> >> > <ds:DigestValue>lAcsILQxRk4LvbSfREkypyI6gMc=</ds:DigestValue>
> >> > </ds:Reference>
> >> > </ds:SignedInfo>
> >> > <ds:SignatureValue>gT/SeC..bjrQ==</ds:SignatureValue>
> >> > <ds:KeyInfo>
> >> > <ds:X509Data>
> >> > <ds:X509Certificate>MII..A==</ds:X509Certificate>
> >> > </ds:X509Data>
> >> > ..
> >> > </ds:KeyInfo>
> >> > </ds:Signature>
> >> >
> >> > According to FAQ, I should have declare name of ID element, but in my
> >> > case it is "ID". And yet, it still does display the error. Following the
> >> > FAQ, point 3.4 states that I am probably using Visa 3-D files, but
> >> > again, that is not an option here.
> >> >
> >> > It's highly likely that I just do not understand *how* to use xmlsec1
> >> > and doing it plain wrong. That said, please take a look and check where
> >> > am I wrong.
> >> >
> >> > Artur
> >> >
> >> >> Subject: Re: [xmlsec] xmlsec returns error when trying to validate
> >> > SAML response
> >> >> To: artur513 at outlook.com; xmlsec at aleksey.com
> >> >> From: aleksey at aleksey.com
> >> >> Date: Tue, 1 Mar 2016 09:30:18 -0800
> >> >>
> >> >> FAQ, section 3.2 (if I recall correctly).
> >> >>
> >> >> Aleksey
> >> >>
> >> >> On 3/1/16 8:57 AM, Artur Rychlewicz wrote:
> >> >> >
> >> >> >
> >> >> > Hello,
> >> >> >
> >> >> > I've been trying to use xmlsec1 to validate signed XML response
> >> >> > containing SAML data.
> >> >> >
> >> >> > When I execute:
> >> >> >
> >> >> > xmlsec1 --verify test.xml
> >> >> >
> >> >> > I receive following stack trace:
> >> >> >
> >> >> >
> >> >
> > func=xmlSecXPathDataExecute:file=xpath.c:line=273:obj=unknown:subj=xmlXPtrEval:error=5:libxml2
> >> >> > library function
> >> >> > failed:expr=xpointer(id('uuid-73c06e86-88d2-4204-91f4-3d484bc782cc'))
> >> >> >
> >> >
> > func=xmlSecXPathDataListExecute:file=xpath.c:line=373:obj=unknown:subj=xmlSecXPathDataExecute:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecTransformXPathExecute:file=xpath.c:line=483:obj=xpointer:subj=xmlSecXPathDataExecute:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecTransformDefaultPushXml:file=transforms.c:line=2411:obj=xpointer:subj=xmlSecTransformExecute:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecTransformCtxXmlExecute:file=transforms.c:line=1242:obj=unknown:subj=xmlSecTransformPushXml:error=1:xmlsec
> >> >> > library function failed:transform=xpointer
> >> >> >
> >> >
> > func=xmlSecTransformCtxExecute:file=transforms.c:line=1302:obj=unknown:subj=xmlSecTransformCtxXmlExecute:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecDSigReferenceCtxProcessNode:file=xmldsig.c:line=1589:obj=unknown:subj=xmlSecTransformCtxExecute:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecDSigCtxProcessSignedInfoNode:file=xmldsig.c:line=822:obj=unknown:subj=xmlSecDSigReferenceCtxProcessNode:error=1:xmlsec
> >> >> > library function failed:node=Reference
> >> >> >
> >> >
> > func=xmlSecDSigCtxProcessSignatureNode:file=xmldsig.c:line=563:obj=unknown:subj=xmlSecDSigCtxProcessSignedInfoNode:error=1:xmlsec
> >> >> > library function failed:
> >> >> >
> >> >
> > func=xmlSecDSigCtxVerify:file=xmldsig.c:line=382:obj=unknown:subj=xmlSecDSigCtxSignatureProcessNode:error=1:xmlsec
> >> >> > library function failed:
> >> >> > Error: signature failed
> >> >> > ERROR
> >> >> > SignedInfo References (ok/all): 0/1
> >> >> > Manifests References (ok/all): 0/0
> >> >> > Error: failed to verify file "test.xml"
> >> >> >
> >> >> > I do not know how XML signatures work, but I presume that the ID was
> >> >> > taken from <saml2p:Response> tag which contains ID with value of
> >> >> > "uuid-73c06e86-88d2-4204-91f4-3d484bc782cc". <saml2p:Response>
> > element
> >> >> > contains <ds:Signature> element which in turn contains <ds:Reference>
> >> >> > with parameter URI="#uuid-73c06e86-88d2-4204-91f4-3d484bc782cc".
> >> >> >
> >> >> > Since I do not need this value/data, I'd like to check signature of
> >> >> > <saml2:Assertion> element which also contains it's own
> >> > <ds:Signature> value.
> >> >> >
> >> >> > That said, I'd like to ask you for instruction how to validate
> > element I
> >> >> > need. Thank you in advance.
> >> >> >
> >> >> > Best regards,
> >> >> > Artur Rychlewicz
> >> >> >
> >> >> >
> >> >> > _______________________________________________
> >> >> > xmlsec mailing list
> >> >> > xmlsec at aleksey.com
> >> >> > http://www.aleksey.com/mailman/listinfo/xmlsec
> >> >> >
> >> >
> >> >
> >> > _______________________________________________
> >> > xmlsec mailing list
> >> > xmlsec at aleksey.com
> >> > http://www.aleksey.com/mailman/listinfo/xmlsec
> >> >
> > 
> > 
> > _______________________________________________
> > xmlsec mailing list
> > xmlsec at aleksey.com
> > http://www.aleksey.com/mailman/listinfo/xmlsec
> > 

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