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(PHP ActiveX) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
<?php // 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; // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.XmlDSigGen') $gen = new COM("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. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Xml') $object1 = new COM("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',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(),'',''); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http') $http = new COM("Chilkat.Http"); // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.BinData') $bd = new COM("Chilkat.BinData"); $url = 'https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456'; $success = $http->QuickGetBd($url,$bd); if ($success != 1) { print $http->LastErrorText . "\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 . "\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 . "\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 . "\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) // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert') $cert = new COM("Chilkat.Cert"); $success = $cert->LoadPfxFile('qa_data/pfx/cert_test123.pfx','test123'); if ($success != 1) { print $cert->LastErrorText . "\n"; exit; } $gen->SetX509Cert($cert,1); $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. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder') $sbXml = new COM("Chilkat.StringBuilder"); $gen->Behaviors = 'IndentedSignature'; // Sign the XML... $success = $gen->CreateXmlDSigSb($sbXml); if ($success != 1) { print $gen->LastErrorText . "\n"; exit; } // ----------------------------------------------- // Save the signed XML to a file. $success = $sbXml->WriteFile('qa_output/signedXml.xml','utf-8',0); print $sbXml->getAsString() . "\n"; // ---------------------------------------- // Verify the signature we just produced... // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.XmlDSig') $verifier = new COM("Chilkat.XmlDSig"); $success = $verifier->LoadSignatureSb($sbXml); if ($success != 1) { print $verifier->LastErrorText . "\n"; exit; } $verified = $verifier->VerifySignature(1); if ($verified != 1) { print $verifier->LastErrorText . "\n"; exit; } print 'This signature was successfully verified.' . "\n"; ?> |
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