Visual Basic 6.0
Visual Basic 6.0
XML-DSig Add Reference with Transforms Specified Explicitly
Demonstrates how to use the new AddSameDocRef2 method to explicitly specify the XML Transforms fragment.Chilkat Visual Basic 6.0 Downloads
Dim success As Long
success = 0
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.
success = 1
' 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 ChilkatXml
xmlToSign.Tag = "doc"
success = xmlToSign.UpdateAttrAt("s",1,"id","s1")
xmlToSign.UpdateChildContent "s","Some text..."
xmlToSign.UpdateChildContent "p","Some text..."
success = xmlToSign.UpdateAttrAt("p[1]",1,"class","note")
xmlToSign.UpdateChildContent "p[1]","A note..."
Debug.Print xmlToSign.GetXml()
Dim gen As New ChilkatXmlDSigGen
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 ChilkatXml
object1.Tag = "xades:QualifyingProperties"
success = object1.AddAttribute("Id","Signature-78f29839-06af-448f-b479-ca46457fab1b-QualifyingProperties")
success = object1.AddAttribute("Target","#Signature-78f29839-06af-448f-b479-ca46457fab1b-Signature")
success = object1.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#")
success = object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
success = object1.UpdateAttrAt("xades:SignedProperties",1,"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
success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1")
object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT"
object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT"
success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",1,"ObjectReference","#Reference-24eb6003-d41c-442c-a731-d4c58f94790b")
object1.UpdateChildContent "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description",""
success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier",1,"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.Print object1.GetXml()
success = 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 ChilkatXml
xml1.Tag = "ds:Transforms"
success = xml1.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/TR/2001/REC-xml-c14n-20010315")
success = xml1.UpdateAttrAt("ds:Transform[1]",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#enveloped-signature")
success = xml1.UpdateAttrAt("ds:Transform[2]",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
success = xml1.UpdateAttrAt("ds:Transform[2]|ds:XPath",1,"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.Print xml1.GetXml()
success = gen.AddSameDocRef2("","sha1",xml1,"")
success = gen.SetRefIdAttr("","Reference-24eb6003-d41c-442c-a731-d4c58f94790b")
' -------- Reference 2 --------
success = gen.AddObjectRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-SignedProperties","sha1","","","http://uri.etsi.org/01903#SignedProperties")
' -------- Reference 3 --------
success = gen.AddSameDocRef("Signature-78f29839-06af-448f-b479-ca46457fab1b-KeyInfo","sha1","","","")
' Provide a certificate + private key. (PFX password is test123)
Dim cert As New ChilkatCert
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success <> 1) Then
Debug.Print cert.LastErrorText
Exit Sub
End If
success = gen.SetX509Cert(cert,1)
gen.KeyInfoType = "X509Data+KeyValue"
gen.X509Type = "CertChain"
' Load XML to be signed...
Dim sbXml As New ChilkatStringBuilder
success = xmlToSign.GetXmlSb(sbXml)
gen.Behaviors = "IndentedSignature"
' Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If (success <> 1) Then
Debug.Print gen.LastErrorText
Exit Sub
End If
' -----------------------------------------------
' Save the signed XML to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",0)
Debug.Print sbXml.GetAsString()
' ----------------------------------------
' Verify the signatures we just produced...
Dim verifier As New ChilkatXmlDSig
success = verifier.LoadSignatureSb(sbXml)
If (success <> 1) Then
Debug.Print verifier.LastErrorText
Exit Sub
End If
Dim numSigs As Long
numSigs = verifier.NumSignatures
Dim verifyIdx As Long
verifyIdx = 0
Do While verifyIdx < numSigs
verifier.Selector = verifyIdx
Dim verified As Long
verified = verifier.VerifySignature(1)
If (verified <> 1) Then
Debug.Print verifier.LastErrorText
Exit Sub
End If
verifyIdx = verifyIdx + 1
Loop
Debug.Print "All signatures were successfully verified."