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(VB.NET) XML-DSig Add Reference with Transforms Specified ExplicitlyDemonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim success As Boolean = True ' Create the following XML to be signed: ' <doc> ' <s id="s1">Some text...</s> ' <p>Some text...</p> ' <p class="note">A note...</p> ' </doc> ' Use this online tool to generate code from sample XML: ' Generate Code to Create XML Dim xmlToSign As New Chilkat.Xml xmlToSign.Tag = "doc" xmlToSign.UpdateAttrAt("s",True,"id","s1") xmlToSign.UpdateChildContent("s","Some text...") xmlToSign.UpdateChildContent("p","Some text...") xmlToSign.UpdateAttrAt("p[1]",True,"class","note") xmlToSign.UpdateChildContent("p[1]","A note...") Debug.WriteLine(xmlToSign.GetXml()) Dim gen As New Chilkat.XmlDSigGen gen.SigLocation = "doc" gen.SigLocationMod = 0 gen.SigId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" gen.SigNamespacePrefix = "ds" gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#" gen.SigValueId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-SignatureValue" gen.SignedInfoCanonAlg = "C14N" gen.SignedInfoDigestMethod = "sha1" ' Set the KeyInfoId before adding references.. gen.KeyInfoId = "Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo" ' The following XML to be added as an Object to the Signature ' Use this online tool to generate code from sample XML: ' Generate Code to Create XML ' <xades:QualifyingProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties" Target="#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#"> ' <xades:SignedProperties Id="Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties"> ' <xades:SignedSignatureProperties> ' <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime> ' <xades:SigningCertificate> ' <xades:Cert> ' <xades:CertDigest> ' <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/> ' <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue> ' </xades:CertDigest> ' <xades:IssuerSerial> ' <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName> ' <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber> ' </xades:IssuerSerial> ' </xades:Cert> ' </xades:SigningCertificate> ' </xades:SignedSignatureProperties> ' <xades:SignedDataObjectProperties> ' <xades:DataObjectFormat ObjectReference="#Reference-24eb6003-d41c-442c-a731-d4c58f94790b"> ' <xades:Description/> ' <xades:ObjectIdentifier> ' <xades:Identifier Qualifier="OIDAsURN">urn:oid:1.2.840.10003.5.109.10</xades:Identifier> ' <xades:Description/> ' </xades:ObjectIdentifier> ' <xades:MimeType>text/xml</xades:MimeType> ' <xades:Encoding/> ' </xades:DataObjectFormat> ' </xades:SignedDataObjectProperties> ' </xades:SignedProperties> ' </xades:QualifyingProperties> Dim object1 As New Chilkat.Xml object1.Tag = "xades:QualifyingProperties" object1.AddAttribute("Id","Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties") object1.AddAttribute("Target","#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature") object1.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#") object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") object1.UpdateAttrAt("xades:SignedProperties",True,"Id","Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT") ' Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1 object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT") object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT") object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",True,"ObjectReference","#Reference-24eb6003-d41c-442c-a731-d4c58f94790b") object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","") object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",True,"Qualifier","OIDAsURN") object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier","urn:oid:1.2.840.10003.5.109.10") object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description","") object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml") object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","") Debug.WriteLine(object1.GetXml()) gen.AddObject("",object1.GetXml(),"","") ' -------- Reference 1 -------- ' Create the following Transforms fragment: ' Use this online tool to generate code from sample XML: ' Generate Code to Create XML ' <ds:Transforms> ' <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/> ' <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/> ' <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116"> ' <ds:XPath xmlns:ds="http://www.w3.org/2000/09/xmldsig#">not(ancestor-or-self::ds:Signature)</ds:XPath> ' </ds:Transform> ' </ds:Transforms> Dim xml1 As New Chilkat.Xml xml1.Tag = "ds:Transforms" xml1.UpdateAttrAt("ds:Transform",True,"Algorithm","http://www.w3.org/TR/2001/REC-xml-c14n-20010315") xml1.UpdateAttrAt("ds:Transform[1]",True,"Algorithm","http://www.w3.org/2000/09/xmldsig#enveloped-signature") xml1.UpdateAttrAt("ds:Transform[2]",True,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116") xml1.UpdateAttrAt("ds:Transform[2]|ds:XPath",True,"xmlns:ds","http://www.w3.org/2000/09/xmldsig#") xml1.UpdateChildContent("ds:Transform[2]|ds:XPath","not(ancestor-or-self::ds:Signature)") ' This is the "Transforms" XML fragment passed to AddSameDocRef2. Debug.WriteLine(xml1.GetXml()) gen.AddSameDocRef2("","sha1",xml1,"") gen.SetRefIdAttr("","Reference-24eb6003-d41c-442c-a731-d4c58f94790b") ' -------- Reference 2 -------- gen.AddObjectRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties","sha1","","","http://uri.etsi.org/01903#SignedProperties") ' -------- Reference 3 -------- gen.AddSameDocRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo","sha1","","","") ' Provide a certificate + private key. (PFX password is test123) Dim cert As New Chilkat.Cert success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") If (success <> True) Then Debug.WriteLine(cert.LastErrorText) Exit Sub End If gen.SetX509Cert(cert,True) gen.KeyInfoType = "X509Data+KeyValue" gen.X509Type = "CertChain" ' Load XML to be signed... Dim sbXml As New Chilkat.StringBuilder xmlToSign.GetXmlSb(sbXml) gen.Behaviors = "IndentedSignature" ' Sign the XML... success = gen.CreateXmlDSigSb(sbXml) If (success <> True) Then Debug.WriteLine(gen.LastErrorText) Exit Sub End If ' ----------------------------------------------- ' Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",False) Debug.WriteLine(sbXml.GetAsString()) ' ---------------------------------------- ' Verify the signatures we just produced... Dim verifier As New Chilkat.XmlDSig success = verifier.LoadSignatureSb(sbXml) If (success <> True) Then Debug.WriteLine(verifier.LastErrorText) Exit Sub End If Dim numSigs As Integer = verifier.NumSignatures Dim verifyIdx As Integer = 0 While verifyIdx < numSigs verifier.Selector = verifyIdx Dim verified As Boolean = verifier.VerifySignature(True) If (verified <> True) Then Debug.WriteLine(verifier.LastErrorText) Exit Sub End If verifyIdx = verifyIdx + 1 End While Debug.WriteLine("All signatures were successfully verified.") |
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