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(Go) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
// 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 := true gen := chilkat.NewXmlDSigGen() gen.SetSigLocation("") gen.SetSigLocationMod(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.SetSigId("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4") gen.SetSigNamespacePrefix("ds") gen.SetSigNamespaceUri("http://www.w3.org/2000/09/xmldsig#") gen.SetSigValueId("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue") gen.SetSignedInfoCanonAlg("C14N") gen.SetSignedInfoDigestMethod("sha256") // Create an Object to be added to the Signature. object1 := chilkat.NewXml() object1.SetTag("xades:QualifyingProperties") object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#") object1.AddAttribute("xmlns:xades141","http://uri.etsi.org/01903/v1.4.1#") object1.AddAttribute("Target","#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4") object1.UpdateAttrAt("xades:SignedProperties",true,"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... object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"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") object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestMethod",true,"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") object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestMethod",true,"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") gen.AddObject("",*object1.GetXml(),"","") http := chilkat.NewHttp() bd := chilkat.NewBinData() url := "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456" success = http.QuickGetBd(url,bd) if success != true { fmt.Println(http.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() return } // -------- Reference 1 -------- gen.AddExternalBinaryRef(url,bd,"sha256","") gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0") // -------- Reference 2 -------- bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1" success = http.QuickGetBd(url,bd) if success != true { fmt.Println(http.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() return } gen.AddExternalBinaryRef(url,bd,"sha256","") gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1") // -------- Reference 3 -------- bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1" success = http.QuickGetBd(url,bd) if success != true { fmt.Println(http.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() return } gen.AddExternalBinaryRef(url,bd,"sha256","") gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2") // -------- Reference 4 -------- bd.Clear() url = "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1" success = http.QuickGetBd(url,bd) if success != true { fmt.Println(http.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() return } gen.AddExternalBinaryRef(url,bd,"sha256","") gen.SetRefIdAttr(url,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3") // -------- Reference 5 -------- 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) cert := chilkat.NewCert() success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") if success != true { fmt.Println(cert.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() cert.DisposeCert() return } gen.SetX509Cert(cert,true) gen.SetKeyInfoType("X509Data") gen.SetX509Type("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. sbXml := chilkat.NewStringBuilder() gen.SetBehaviors("IndentedSignature") // Sign the XML... success = gen.CreateXmlDSigSb(sbXml) if success != true { fmt.Println(gen.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() cert.DisposeCert() sbXml.DisposeStringBuilder() return } // ----------------------------------------------- // Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false) fmt.Println(*sbXml.GetAsString()) // ---------------------------------------- // Verify the signature we just produced... verifier := chilkat.NewXmlDSig() success = verifier.LoadSignatureSb(sbXml) if success != true { fmt.Println(verifier.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() cert.DisposeCert() sbXml.DisposeStringBuilder() verifier.DisposeXmlDSig() return } verified := verifier.VerifySignature(true) if verified != true { fmt.Println(verifier.LastErrorText()) gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() cert.DisposeCert() sbXml.DisposeStringBuilder() verifier.DisposeXmlDSig() return } fmt.Println("This signature was successfully verified.") gen.DisposeXmlDSigGen() object1.DisposeXml() http.DisposeHttp() bd.DisposeBinData() cert.DisposeCert() sbXml.DisposeStringBuilder() verifier.DisposeXmlDSig() |
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