Perl
Perl
XML Signature Multiple External References
See more XML Digital Signatures Examples
Demonstrates how to add multiple external references to an XML digital signature.Chilkat Perl Downloads
use chilkat();
$success = 0;
# 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;
$gen = chilkat::CkXmlDSigGen->new();
$gen->put_SigLocation("");
$gen->put_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->put_SigId("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4");
$gen->put_SigNamespacePrefix("ds");
$gen->put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
$gen->put_SigValueId("xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue");
$gen->put_SignedInfoCanonAlg("C14N");
$gen->put_SignedInfoDigestMethod("sha256");
# Create an Object to be added to the Signature.
$object1 = chilkat::CkXml->new();
$object1->put_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",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...
$object1->UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
$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");
$gen->AddObject("",$object1->getXml(),"","");
$http = chilkat::CkHttp->new();
$bd = chilkat::CkBinData->new();
$url = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456";
$success = $http->QuickGetBd($url,$bd);
if ($success != 1) {
print $http->lastErrorText() . "\r\n";
exit;
}
# -------- 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 != 1) {
print $http->lastErrorText() . "\r\n";
exit;
}
$gen->AddExternalBinaryRef($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 != 1) {
print $http->lastErrorText() . "\r\n";
exit;
}
$gen->AddExternalBinaryRef($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 != 1) {
print $http->lastErrorText() . "\r\n";
exit;
}
$gen->AddExternalBinaryRef($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::CkCert->new();
$success = $cert->LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if ($success != 1) {
print $cert->lastErrorText() . "\r\n";
exit;
}
$gen->SetX509Cert($cert,1);
$gen->put_KeyInfoType("X509Data");
$gen->put_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.
$sbXml = chilkat::CkStringBuilder->new();
$gen->put_Behaviors("IndentedSignature");
# Sign the XML...
$success = $gen->CreateXmlDSigSb($sbXml);
if ($success != 1) {
print $gen->lastErrorText() . "\r\n";
exit;
}
# -----------------------------------------------
# Save the signed XML to a file.
$success = $sbXml->WriteFile("qa_output/signedXml.xml","utf-8",0);
print $sbXml->getAsString() . "\r\n";
# ----------------------------------------
# Verify the signature we just produced...
$verifier = chilkat::CkXmlDSig->new();
$success = $verifier->LoadSignatureSb($sbXml);
if ($success != 1) {
print $verifier->lastErrorText() . "\r\n";
exit;
}
$verified = $verifier->VerifySignature(1);
if ($verified != 1) {
print $verifier->lastErrorText() . "\r\n";
exit;
}
print "This signature was successfully verified." . "\r\n";