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uncategorized

 

 

 

(Lianja) XML Signature Multiple External References

Demonstrates how to add multiple external references to an XML digital signature.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

// 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>
// 

llSuccess = .T.
loGen = createobject("CkXmlDSigGen")

loGen.SigLocation = ""
loGen.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.
loGen.SigId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4"
loGen.SigNamespacePrefix = "ds"
loGen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
loGen.SigValueId = "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue"
loGen.SignedInfoCanonAlg = "C14N"
loGen.SignedInfoDigestMethod = "sha256"

// Create an Object to be added to the Signature.
loObject1 = createobject("CkXml")
loObject1.Tag = "xades:QualifyingProperties"
loObject1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
loObject1.AddAttribute("xmlns:xades141","http://uri.etsi.org/01903/v1.4.1#")
loObject1.AddAttribute("Target","#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4")
loObject1.UpdateAttrAt("xades:SignedProperties",.T.,"Id","xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops")
loObject1.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...
loObject1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",.T.,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
loObject1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
loObject1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT")

loGen.AddObject("",loObject1.GetXml(),"","")

loHttp = createobject("CkHttp")
loBd = createobject("CkBinData")

lcUrl = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456"
llSuccess = loHttp.QuickGetBd(lcUrl,loBd)
if (llSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    return
endif

// -------- Reference 1 --------
loGen.AddExternalBinaryRef(lcUrl,loBd,"sha256","")
loGen.SetRefIdAttr(lcUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0")

// -------- Reference 2 --------
loBd.Clear()
lcUrl = "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1"
llSuccess = loHttp.QuickGetBd(lcUrl,loBd)
if (llSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    return
endif

loGen.AddExternalBinaryRef(lcUrl,loBd,"sha256","")
loGen.SetRefIdAttr(lcUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1")

// -------- Reference 3 --------
loBd.Clear()
lcUrl = "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1"
llSuccess = loHttp.QuickGetBd(lcUrl,loBd)
if (llSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    return
endif

loGen.AddExternalBinaryRef(lcUrl,loBd,"sha256","")
loGen.SetRefIdAttr(lcUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2")

// -------- Reference 4 --------
loBd.Clear()
lcUrl = "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1"
llSuccess = loHttp.QuickGetBd(lcUrl,loBd)
if (llSuccess <> .T.) then
    ? loHttp.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    return
endif

loGen.AddExternalBinaryRef(lcUrl,loBd,"sha256","")
loGen.SetRefIdAttr(lcUrl,"xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3")

// -------- Reference 5 --------
loGen.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)
loCert = createobject("CkCert")
llSuccess = loCert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
if (llSuccess <> .T.) then
    ? loCert.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    release loCert
    return
endif

loGen.SetX509Cert(loCert,.T.)

loGen.KeyInfoType = "X509Data"
loGen.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.
loSbXml = createobject("CkStringBuilder")

loGen.Behaviors = "IndentedSignature"

// Sign the XML...
llSuccess = loGen.CreateXmlDSigSb(loSbXml)
if (llSuccess <> .T.) then
    ? loGen.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    release loCert
    release loSbXml
    return
endif

// -----------------------------------------------

// Save the signed XML to a file.
llSuccess = loSbXml.WriteFile("qa_output/signedXml.xml","utf-8",.F.)

? loSbXml.GetAsString()

// ----------------------------------------
// Verify the signature we just produced...
loVerifier = createobject("CkXmlDSig")
llSuccess = loVerifier.LoadSignatureSb(loSbXml)
if (llSuccess <> .T.) then
    ? loVerifier.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    release loCert
    release loSbXml
    release loVerifier
    return
endif

llVerified = loVerifier.VerifySignature(.T.)
if (llVerified <> .T.) then
    ? loVerifier.LastErrorText
    release loGen
    release loObject1
    release loHttp
    release loBd
    release loCert
    release loSbXml
    release loVerifier
    return
endif

? "This signature was successfully verified."


release loGen
release loObject1
release loHttp
release loBd
release loCert
release loSbXml
release loVerifier
 

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