Lua
Lua
XML Signature Multiple External References
See more XML Digital Signatures Examples
Demonstrates how to add multiple external references to an XML digital signature.Chilkat Lua Downloads
local chilkat = require("chilkat")
-- 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>
--
local success = true
local gen = chilkat.XmlDSigGen.new()
gen.sig_location = ""
gen.sig_location_mod = 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.sig_id = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"
gen.sig_namespace_prefix = "ds"
gen.sig_namespace_uri = "http://www.w3.org/2000/09/xmldsig#"
gen.sig_value_id = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue"
gen.signed_info_canon_alg = "C14N"
gen.signed_info_digest_method = "sha256"
-- Create an Object to be added to the Signature.
local object1 = chilkat.Xml.new()
object1.tag = "xades:QualifyingProperties"
object1:add_attribute("xmlns:xades", "http://uri.etsi.org/01903/v1.3.2#")
object1:add_attribute("xmlns:xades141", "http://uri.etsi.org/01903/v1.4.1#")
object1:add_attribute("Target", "#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4")
object1:update_attr_at("xades:SignedProperties", true, "Id", "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops")
object1:update_child_content("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:update_attr_at("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", true, "Algorithm", "http://www.w3.org/2001/04/xmlenc#sha256")
object1:update_child_content("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue", "TO BE GENERATED BY CHILKAT")
object1:update_child_content("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2", "TO BE GENERATED BY CHILKAT")
gen:add_object("", object1:get_xml(), "", "")
local http = chilkat.Http.new()
local bd = chilkat.BinData.new()
local url = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"
success = http:quick_get_bd(url, bd)
if not success then
print(http.last_error_text)
return
end
-- -------- Reference 1 --------
gen:add_external_binary_ref(url, bd, "sha256", "")
gen:set_ref_id_attr(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:quick_get_bd(url, bd)
if not success then
print(http.last_error_text)
return
end
gen:add_external_binary_ref(url, bd, "sha256", "")
gen:set_ref_id_attr(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:quick_get_bd(url, bd)
if not success then
print(http.last_error_text)
return
end
gen:add_external_binary_ref(url, bd, "sha256", "")
gen:set_ref_id_attr(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:quick_get_bd(url, bd)
if not success then
print(http.last_error_text)
return
end
gen:add_external_binary_ref(url, bd, "sha256", "")
gen:set_ref_id_attr(url, "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3")
-- -------- Reference 5 --------
gen:add_object_ref("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops", "sha256", "C14N", "", "http://uri.etsi.org/01903#SignedProperties")
-- Provide a certificate + private key. (PFX password is test123)
local cert = chilkat.Cert.new()
success = cert:load_pfx_file("qa_data/pfx/cert_test123.pfx", "test123")
if not success then
print(cert.last_error_text)
return
end
gen:set_x509_cert(cert, true)
gen.key_info_type = "X509Data"
gen.x509_type = "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.
local sbXml = chilkat.StringBuilder.new()
gen.behaviors = "IndentedSignature"
-- Sign the XML...
success = gen:create_xml_dsig_sb(sbXml)
if not success then
print(gen.last_error_text)
return
end
-- -----------------------------------------------
-- Save the signed XML to a file.
success = sbXml:write_file("qa_output/signedXml.xml", "utf-8", false)
print(sbXml:get_as_string())
-- ----------------------------------------
-- Verify the signature we just produced...
local verifier = chilkat.XmlDSig.new()
success = verifier:load_signature_sb(sbXml)
if not success then
print(verifier.last_error_text)
return
end
local verified = verifier:verify_signature(true)
if not verified then
print(verifier.last_error_text)
return
end
print("This signature was successfully verified.")