Zig
Zig
XML Signature Multiple External References
See more XML Digital Signatures Examples
Demonstrates how to add multiple external references to an XML digital signature.Chilkat Zig Downloads
const std = @import("std");
const chilkat = @import("chilkat");
pub fn main(init: std.process.Init) !void {
const alloc = init.arena.allocator();
// 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>
//
const gen = try chilkat.XmlDSigGen.init();
defer gen.deinit();
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.
const object1 = try chilkat.Xml.init();
defer object1.deinit();
object1.setTag("xades:QualifyingProperties");
object1.addAttribute("xmlns:xades", "http://uri.etsi.org/01903/v1.3.2#") catch {};
object1.addAttribute("xmlns:xades141", "http://uri.etsi.org/01903/v1.4.1#") catch {};
object1.addAttribute("Target", "#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4") catch {};
object1.updateAttrAt("xades:SignedProperties", true, "Id", "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops") catch {};
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:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", true, "Algorithm", "http://www.w3.org/2001/04/xmlenc#sha256") catch {};
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");
gen.addObject("", try object1.getXml(alloc), "", "") catch {};
const http = try chilkat.Http.init();
defer http.deinit();
const bd = try chilkat.BinData.init();
defer bd.deinit();
var url: [:0]const u8 = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456";
http.quickGetBd(url, bd) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
};
// -------- Reference 1 --------
gen.addExternalBinaryRef(url, bd, "sha256", "") catch {};
gen.setRefIdAttr(url, "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0") catch {};
// -------- Reference 2 --------
bd.clear() catch {};
url = "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1";
http.quickGetBd(url, bd) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
};
gen.addExternalBinaryRef(url, bd, "sha256", "") catch {};
gen.setRefIdAttr(url, "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1") catch {};
// -------- Reference 3 --------
bd.clear() catch {};
url = "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1";
http.quickGetBd(url, bd) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
};
gen.addExternalBinaryRef(url, bd, "sha256", "") catch {};
gen.setRefIdAttr(url, "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2") catch {};
// -------- Reference 4 --------
bd.clear() catch {};
url = "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1";
http.quickGetBd(url, bd) catch {
std.debug.print("{s}\n", .{try http.getLastErrorText(alloc)});
return;
};
gen.addExternalBinaryRef(url, bd, "sha256", "") catch {};
gen.setRefIdAttr(url, "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3") catch {};
// -------- Reference 5 --------
gen.addObjectRef("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops", "sha256", "C14N", "", "http://uri.etsi.org/01903#SignedProperties") catch {};
// Provide a certificate + private key. (PFX password is test123)
const cert = try chilkat.Cert.init();
defer cert.deinit();
cert.loadPfxFile("qa_data/pfx/cert_test123.pfx", "test123") catch {
std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
return;
};
gen.setX509Cert(cert, true) catch {};
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.
const sb_xml = try chilkat.StringBuilder.init();
defer sb_xml.deinit();
gen.setBehaviors("IndentedSignature");
// Sign the XML...
gen.createXmlDSigSb(sb_xml) catch {
std.debug.print("{s}\n", .{try gen.getLastErrorText(alloc)});
return;
};
// -----------------------------------------------
// Save the signed XML to a file.
try sb_xml.writeFile("qa_output/signedXml.xml", "utf-8", false);
std.debug.print("{s}\n", .{try sb_xml.getAsString(alloc)});
// ----------------------------------------
// Verify the signature we just produced...
const verifier = try chilkat.XmlDSig.init();
defer verifier.deinit();
verifier.loadSignatureSb(sb_xml) catch {
std.debug.print("{s}\n", .{try verifier.getLastErrorText(alloc)});
return;
};
verifier.verifySignature(true) catch {
std.debug.print("{s}\n", .{try verifier.getLastErrorText(alloc)});
return;
};
std.debug.print("This signature was successfully verified.\n", .{});
}