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(Node.js) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
var os = require('os'); if (os.platform() == 'win32') { if (os.arch() == 'ia32') { var chilkat = require('@chilkat/ck-node21-win-ia32'); } else { var chilkat = require('@chilkat/ck-node21-win64'); } } else if (os.platform() == 'linux') { if (os.arch() == 'arm') { var chilkat = require('@chilkat/ck-node21-arm'); } else if (os.arch() == 'x86') { var chilkat = require('@chilkat/ck-node21-linux32'); } else { var chilkat = require('@chilkat/ck-node21-linux64'); } } else if (os.platform() == 'darwin') { if (os.arch() == 'arm64') { var chilkat = require('@chilkat/ck-node21-mac-m1'); } else { var chilkat = require('@chilkat/ck-node21-macosx'); } } function chilkatExample() { // 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> // var success = true; var gen = new 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. var object1 = new chilkat.Xml(); object1.Tag = "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(),"",""); var http = new chilkat.Http(); var bd = new chilkat.BinData(); var url = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"; success = http.QuickGetBd(url,bd); if (success !== true) { console.log(http.LastErrorText); 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) { console.log(http.LastErrorText); 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) { console.log(http.LastErrorText); 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) { console.log(http.LastErrorText); 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) var cert = new chilkat.Cert(); success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123"); if (success !== true) { console.log(cert.LastErrorText); return; } gen.SetX509Cert(cert,true); 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. var sbXml = new chilkat.StringBuilder(); gen.Behaviors = "IndentedSignature"; // Sign the XML... success = gen.CreateXmlDSigSb(sbXml); if (success !== true) { console.log(gen.LastErrorText); return; } // ----------------------------------------------- // Save the signed XML to a file. success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false); console.log(sbXml.GetAsString()); // ---------------------------------------- // Verify the signature we just produced... var verifier = new chilkat.XmlDSig(); success = verifier.LoadSignatureSb(sbXml); if (success !== true) { console.log(verifier.LastErrorText); return; } var verified = verifier.VerifySignature(true); if (verified !== true) { console.log(verifier.LastErrorText); return; } console.log("This signature was successfully verified."); } chilkatExample(); |
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