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(Classic ASP) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' 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> ' success = 1 ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.XmlDSigGen") set gen = Server.CreateObject("Chilkat.XmlDSigGen") gen.SigLocation = "" gen.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. gen.SigId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4" gen.SigNamespacePrefix = "ds" gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#" gen.SigValueId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue" gen.SignedInfoCanonAlg = "C14N" gen.SignedInfoDigestMethod = "sha256" ' Create an Object to be added to the Signature. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Xml") set object1 = Server.CreateObject("Chilkat.Xml") object1.Tag = "xades:QualifyingProperties" success = object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") success = object1.AddAttribute("xmlns:xades141","http://uri.etsi.org/01903/v1.4.1#") success = object1.AddAttribute("Target","#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4") success = object1.UpdateAttrAt("xades:SignedProperties",1,"Id","xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops") object1.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... success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256") 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" success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256") object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT" success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256") object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT" object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT" success = gen.AddObject("",object1.GetXml(),"","") ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Http") set http = Server.CreateObject("Chilkat.Http") ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.BinData") set bd = Server.CreateObject("Chilkat.BinData") url = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456" success = http.QuickGetBd(url,bd) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If ' -------- Reference 1 -------- success = gen.AddExternalBinaryRef(url,bd,"sha256","") success = gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0") ' -------- Reference 2 -------- success = bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1" success = http.QuickGetBd(url,bd) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If success = gen.AddExternalBinaryRef(url,bd,"sha256","") success = gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1") ' -------- Reference 3 -------- success = bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1" success = http.QuickGetBd(url,bd) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If success = gen.AddExternalBinaryRef(url,bd,"sha256","") success = gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2") ' -------- Reference 4 -------- success = bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1" success = http.QuickGetBd(url,bd) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( http.LastErrorText) & "</pre>" Response.End End If success = gen.AddExternalBinaryRef(url,bd,"sha256","") success = gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3") ' -------- Reference 5 -------- success = gen.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) ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Cert") set cert = Server.CreateObject("Chilkat.Cert") success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( cert.LastErrorText) & "</pre>" Response.End End If success = gen.SetX509Cert(cert,1) gen.KeyInfoType = "X509Data" gen.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. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder") set sbXml = Server.CreateObject("Chilkat.StringBuilder") gen.Behaviors = "IndentedSignature" ' Sign the XML... success = gen.CreateXmlDSigSb(sbXml) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( gen.LastErrorText) & "</pre>" Response.End End If ' ----------------------------------------------- ' Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",0) Response.Write "<pre>" & Server.HTMLEncode( sbXml.GetAsString()) & "</pre>" ' ---------------------------------------- ' Verify the signature we just produced... ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.XmlDSig") set verifier = Server.CreateObject("Chilkat.XmlDSig") success = verifier.LoadSignatureSb(sbXml) If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( verifier.LastErrorText) & "</pre>" Response.End End If verified = verifier.VerifySignature(1) If (verified <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( verifier.LastErrorText) & "</pre>" Response.End End If Response.Write "<pre>" & Server.HTMLEncode( "This signature was successfully verified.") & "</pre>" %> </body> </html> |
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