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XML Signature Multiple External References
See more XML Digital Signatures Examples
Demonstrates how to add multiple external references to an XML digital signature.Chilkat AutoIt Downloads
Local $bSuccess = False
; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.
; This example creates the following signed XML with multiple external references:
; <?xml version="1.0" encoding="UTF-8"?>
; <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4">
; <ds:SignedInfo>
; <ds:CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
; <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
; <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0" URI="https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456">
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </ds:Reference>
; <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1" URI="https://isus.ezdrowie.gov.pl/fhir/Encounter/124/_history/22">
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </ds:Reference>
; <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2" URI="https://isus.ezdrowie.gov.pl/fhir/Condition/125/_history/1">
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </ds:Reference>
; <ds:Reference Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3" URI="https://isus.ezdrowie.gov.pl/fhir/Procedure/126/_history/1">
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </ds:Reference>
; <ds:Reference Type="http://uri.etsi.org/01903#SignedProperties" URI="#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops">
; <ds:Transforms>
; <ds:Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/>
; </ds:Transforms>
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </ds:Reference>
; </ds:SignedInfo>
; <ds:SignatureValue Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue">...</ds:SignatureValue>
; <ds:KeyInfo>
; <ds:X509Data>
; <ds:X509Certificate>...</ds:X509Certificate>
; <ds:X509SubjectName>...</ds:X509SubjectName>
; <ds:X509IssuerSerial>
; <ds:X509IssuerName>...</ds:X509IssuerName>
; <ds:X509SerialNumber>...</ds:X509SerialNumber>
; </ds:X509IssuerSerial>
; </ds:X509Data>
; </ds:KeyInfo>
; <ds:Object>
; <xades:QualifyingProperties xmlns:xades="http://uri.etsi.org/01903/v1.3.2#" xmlns:xades141="http://uri.etsi.org/01903/v1.4.1#" Target="#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4">
; <xades:SignedProperties Id="xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops">
; <xades:SignedSignatureProperties>
; <xades:SigningTime>2021-06-02T07:10:13.306+02:00</xades:SigningTime>
; <xades:SigningCertificate>
; <xades:Cert>
; <xades:CertDigest>
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </xades:CertDigest>
; <xades:IssuerSerial>
; <ds:X509IssuerName>...</ds:X509IssuerName>
; <ds:X509SerialNumber>...</ds:X509SerialNumber>
; </xades:IssuerSerial>
; </xades:Cert>
; <xades:Cert>
; <xades:CertDigest>
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </xades:CertDigest>
; <xades:IssuerSerial>
; <ds:X509IssuerName>...</ds:X509IssuerName>
; <ds:X509SerialNumber>...</ds:X509SerialNumber>
; </xades:IssuerSerial>
; </xades:Cert>
; <xades:Cert>
; <xades:CertDigest>
; <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
; <ds:DigestValue>...</ds:DigestValue>
; </xades:CertDigest>
; <xades:IssuerSerial>
; <ds:X509IssuerName>...</ds:X509IssuerName>
; <ds:X509SerialNumber>...</ds:X509SerialNumber>
; </xades:IssuerSerial>
; </xades:Cert>
; </xades:SigningCertificate>
; </xades:SignedSignatureProperties>
; </xades:SignedProperties>
; </xades:QualifyingProperties>
; </ds:Object>
; </ds:Signature>
;
$bSuccess = True
$oGen = ObjCreate("Chilkat.XmlDSigGen")
$oGen.SigLocation = ""
$oGen.SigLocationMod = 0
; Note: ID's simply need to be unique values in the signed XML document. They don't necessarily need to be GUID/UUID formatted.
$oGen.SigId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"
$oGen.SigNamespacePrefix = "ds"
$oGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
$oGen.SigValueId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue"
$oGen.SignedInfoCanonAlg = "C14N"
$oGen.SignedInfoDigestMethod = "sha256"
; Create an Object to be added to the Signature.
$oObject1 = ObjCreate("Chilkat.Xml")
$oObject1.Tag = "xades:QualifyingProperties"
$oObject1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
$oObject1.AddAttribute("xmlns:xades141","http://uri.etsi.org/01903/v1.4.1#")
$oObject1.AddAttribute("Target","#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4")
$oObject1.UpdateAttrAt("xades:SignedProperties",True,"Id","xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops")
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT"
; This assumes there are 3 certs in the certificate chain: The signing certificate, an intermediate root, and the root CA.
; Remove the lines with "Cert[2]" if there is no intermediate root...
$oObject1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",True,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT"
$oObject1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT"
$oGen.AddObject("",$oObject1.GetXml(),"","")
$oHttp = ObjCreate("Chilkat.Http")
$oBd = ObjCreate("Chilkat.BinData")
Local $sUrl = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"
$bSuccess = $oHttp.QuickGetBd($sUrl,$oBd)
If ($bSuccess <> True) Then
ConsoleWrite($oHttp.LastErrorText & @CRLF)
Exit
EndIf
; -------- Reference 1 --------
$oGen.AddExternalBinaryRef($sUrl,$oBd,"sha256","")
$oGen.SetRefIdAttr($sUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0")
; -------- Reference 2 --------
$oBd.Clear()
$sUrl = "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1"
$bSuccess = $oHttp.QuickGetBd($sUrl,$oBd)
If ($bSuccess <> True) Then
ConsoleWrite($oHttp.LastErrorText & @CRLF)
Exit
EndIf
$oGen.AddExternalBinaryRef($sUrl,$oBd,"sha256","")
$oGen.SetRefIdAttr($sUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1")
; -------- Reference 3 --------
$oBd.Clear()
$sUrl = "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1"
$bSuccess = $oHttp.QuickGetBd($sUrl,$oBd)
If ($bSuccess <> True) Then
ConsoleWrite($oHttp.LastErrorText & @CRLF)
Exit
EndIf
$oGen.AddExternalBinaryRef($sUrl,$oBd,"sha256","")
$oGen.SetRefIdAttr($sUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2")
; -------- Reference 4 --------
$oBd.Clear()
$sUrl = "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1"
$bSuccess = $oHttp.QuickGetBd($sUrl,$oBd)
If ($bSuccess <> True) Then
ConsoleWrite($oHttp.LastErrorText & @CRLF)
Exit
EndIf
$oGen.AddExternalBinaryRef($sUrl,$oBd,"sha256","")
$oGen.SetRefIdAttr($sUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3")
; -------- Reference 5 --------
$oGen.AddObjectRef("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops","sha256","C14N","","http://uri.etsi.org/01903#SignedProperties")
; Provide a certificate + private key. (PFX password is test123)
$oCert = ObjCreate("Chilkat.Cert")
$bSuccess = $oCert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If ($bSuccess <> True) Then
ConsoleWrite($oCert.LastErrorText & @CRLF)
Exit
EndIf
$oGen.SetX509Cert($oCert,True)
$oGen.KeyInfoType = "X509Data"
$oGen.X509Type = "IssuerSerial,SubjectName,Certificate"
; This will be an enveloping signature where the Signature element
; is the XML document root, the signed data is contained within Object
; tag(s) within the Signature.
; Therefore, pass an empty sbXml to CreateXmlDsigSb.
$oSbXml = ObjCreate("Chilkat.StringBuilder")
$oGen.Behaviors = "IndentedSignature"
; Sign the XML...
$bSuccess = $oGen.CreateXmlDSigSb($oSbXml)
If ($bSuccess <> True) Then
ConsoleWrite($oGen.LastErrorText & @CRLF)
Exit
EndIf
; -----------------------------------------------
; Save the signed XML to a file.
$bSuccess = $oSbXml.WriteFile("qa_output/signedXml.xml","utf-8",False)
ConsoleWrite($oSbXml.GetAsString() & @CRLF)
; ----------------------------------------
; Verify the signature we just produced...
$oVerifier = ObjCreate("Chilkat.XmlDSig")
$bSuccess = $oVerifier.LoadSignatureSb($oSbXml)
If ($bSuccess <> True) Then
ConsoleWrite($oVerifier.LastErrorText & @CRLF)
Exit
EndIf
Local $bVerified = $oVerifier.VerifySignature(True)
If ($bVerified <> True) Then
ConsoleWrite($oVerifier.LastErrorText & @CRLF)
Exit
EndIf
ConsoleWrite("This signature was successfully verified." & @CRLF)