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(PowerShell) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll" # 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 = $true $gen = New-Object 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. $object1 = New-Object 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") $object1.UpdateAttrAt("xades:SignedProperties",$true,"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... $object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",$true,"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 = New-Object Chilkat.Http $bd = New-Object Chilkat.BinData $url = "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456" $success = $http.QuickGetBd($url,$bd) if ($success -ne $true) { $($http.LastErrorText) 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 -ne $true) { $($http.LastErrorText) 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 -ne $true) { $($http.LastErrorText) 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 -ne $true) { $($http.LastErrorText) 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 = New-Object Chilkat.Cert $success = $cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123") if ($success -ne $true) { $($cert.LastErrorText) exit } $gen.SetX509Cert($cert,$true) $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. $sbXml = New-Object Chilkat.StringBuilder $gen.Behaviors = "IndentedSignature" # Sign the XML... $success = $gen.CreateXmlDSigSb($sbXml) if ($success -ne $true) { $($gen.LastErrorText) exit } # ----------------------------------------------- # Save the signed XML to a file. $success = $sbXml.WriteFile("qa_output/signedXml.xml","utf-8",$false) $($sbXml.GetAsString()) # ---------------------------------------- # Verify the signature we just produced... $verifier = New-Object Chilkat.XmlDSig $success = $verifier.LoadSignatureSb($sbXml) if ($success -ne $true) { $($verifier.LastErrorText) exit } $verified = $verifier.VerifySignature($true) if ($verified -ne $true) { $($verifier.LastErrorText) exit } $("This signature was successfully verified.") |
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