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(DataFlex) XML Signature Multiple External ReferencesDemonstrates how to add multiple external references to an XML digital signature.
Use ChilkatAx-win32.pkg Procedure Test Boolean iSuccess Handle hoGen Handle hoObject1 Handle hoHttp Variant vBd Handle hoBd String sUrl Variant vCert Handle hoCert Variant vSbXml Handle hoSbXml Handle hoVerifier Boolean iVerified String sTemp1 // 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> // Move True To iSuccess Get Create (RefClass(cComChilkatXmlDSigGen)) To hoGen If (Not(IsComObjectCreated(hoGen))) Begin Send CreateComObject of hoGen End Set ComSigLocation Of hoGen To "" Set ComSigLocationMod Of hoGen To 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. Set ComSigId Of hoGen To "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4" Set ComSigNamespacePrefix Of hoGen To "ds" Set ComSigNamespaceUri Of hoGen To "http://www.w3.org/2000/09/xmldsig#" Set ComSigValueId Of hoGen To "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-sigvalue" Set ComSignedInfoCanonAlg Of hoGen To "C14N" Set ComSignedInfoDigestMethod Of hoGen To "sha256" // Create an Object to be added to the Signature. Get Create (RefClass(cComChilkatXml)) To hoObject1 If (Not(IsComObjectCreated(hoObject1))) Begin Send CreateComObject of hoObject1 End Set ComTag Of hoObject1 To "xades:QualifyingProperties" Get ComAddAttribute Of hoObject1 "xmlns:xades" "http://uri.etsi.org/01903/v1.3.2#" To iSuccess Get ComAddAttribute Of hoObject1 "xmlns:xades141" "http://uri.etsi.org/01903/v1.4.1#" To iSuccess Get ComAddAttribute Of hoObject1 "Target" "#xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4" To iSuccess Get ComUpdateAttrAt Of hoObject1 "xades:SignedProperties" True "Id" "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops" To iSuccess Send ComUpdateChildContent To hoObject1 "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... Get ComUpdateAttrAt Of hoObject1 "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod" True "Algorithm" "http://www.w3.org/2001/04/xmlenc#sha256" To iSuccess Send ComUpdateChildContent To hoObject1 "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue" "TO BE GENERATED BY CHILKAT" Send ComUpdateChildContent To hoObject1 "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2" "TO BE GENERATED BY CHILKAT" Get ComGetXml Of hoObject1 To sTemp1 Get ComAddObject Of hoGen "" sTemp1 "" "" To iSuccess Get Create (RefClass(cComChilkatHttp)) To hoHttp If (Not(IsComObjectCreated(hoHttp))) Begin Send CreateComObject of hoHttp End Get Create (RefClass(cComChilkatBinData)) To hoBd If (Not(IsComObjectCreated(hoBd))) Begin Send CreateComObject of hoBd End Move "https://isus.ezdrowie.gov.pl/fhir/Patient/123/_history/456" To sUrl Get pvComObject of hoBd to vBd Get ComQuickGetBd Of hoHttp sUrl vBd To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End // -------- Reference 1 -------- Get pvComObject of hoBd to vBd Get ComAddExternalBinaryRef Of hoGen sUrl vBd "sha256" "" To iSuccess Get ComSetRefIdAttr Of hoGen sUrl "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref0" To iSuccess // -------- Reference 2 -------- Get ComClear Of hoBd To iSuccess Move "https://isus.ezdrowie.gov.pl/fhir/Encounter/789/_history/1" To sUrl Get pvComObject of hoBd to vBd Get ComQuickGetBd Of hoHttp sUrl vBd To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get pvComObject of hoBd to vBd Get ComAddExternalBinaryRef Of hoGen sUrl vBd "sha256" "" To iSuccess Get ComSetRefIdAttr Of hoGen sUrl "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref1" To iSuccess // -------- Reference 3 -------- Get ComClear Of hoBd To iSuccess Move "https://isus.ezdrowie.gov.pl/fhir/Condition/123456/_history/1" To sUrl Get pvComObject of hoBd to vBd Get ComQuickGetBd Of hoHttp sUrl vBd To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get pvComObject of hoBd to vBd Get ComAddExternalBinaryRef Of hoGen sUrl vBd "sha256" "" To iSuccess Get ComSetRefIdAttr Of hoGen sUrl "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref2" To iSuccess // -------- Reference 4 -------- Get ComClear Of hoBd To iSuccess Move "https://isus.ezdrowie.gov.pl/fhir/Procedure/123456/_history/1" To sUrl Get pvComObject of hoBd to vBd Get ComQuickGetBd Of hoHttp sUrl vBd To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoHttp To sTemp1 Showln sTemp1 Procedure_Return End Get pvComObject of hoBd to vBd Get ComAddExternalBinaryRef Of hoGen sUrl vBd "sha256" "" To iSuccess Get ComSetRefIdAttr Of hoGen sUrl "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-ref3" To iSuccess // -------- Reference 5 -------- Get ComAddObjectRef Of hoGen "xmldsig-2dde88a8-def0-43e4-8570-b031015a46b4-signedprops" "sha256" "C14N" "" "http://uri.etsi.org/01903#SignedProperties" To iSuccess // Provide a certificate + private key. (PFX password is test123) Get Create (RefClass(cComChilkatCert)) To hoCert If (Not(IsComObjectCreated(hoCert))) Begin Send CreateComObject of hoCert End Get ComLoadPfxFile Of hoCert "qa_data/pfx/cert_test123.pfx" "test123" To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoCert To sTemp1 Showln sTemp1 Procedure_Return End Get pvComObject of hoCert to vCert Get ComSetX509Cert Of hoGen vCert True To iSuccess Set ComKeyInfoType Of hoGen To "X509Data" Set ComX509Type Of hoGen To "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. Get Create (RefClass(cComChilkatStringBuilder)) To hoSbXml If (Not(IsComObjectCreated(hoSbXml))) Begin Send CreateComObject of hoSbXml End Set ComBehaviors Of hoGen To "IndentedSignature" // Sign the XML... Get pvComObject of hoSbXml to vSbXml Get ComCreateXmlDSigSb Of hoGen vSbXml To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoGen To sTemp1 Showln sTemp1 Procedure_Return End // ----------------------------------------------- // Save the signed XML to a file. Get ComWriteFile Of hoSbXml "qa_output/signedXml.xml" "utf-8" False To iSuccess Get ComGetAsString Of hoSbXml To sTemp1 Showln sTemp1 // ---------------------------------------- // Verify the signature we just produced... Get Create (RefClass(cComChilkatXmlDSig)) To hoVerifier If (Not(IsComObjectCreated(hoVerifier))) Begin Send CreateComObject of hoVerifier End Get pvComObject of hoSbXml to vSbXml Get ComLoadSignatureSb Of hoVerifier vSbXml To iSuccess If (iSuccess <> True) Begin Get ComLastErrorText Of hoVerifier To sTemp1 Showln sTemp1 Procedure_Return End Get ComVerifySignature Of hoVerifier True To iVerified If (iVerified <> True) Begin Get ComLastErrorText Of hoVerifier To sTemp1 Showln sTemp1 Procedure_Return End Showln "This signature was successfully verified." End_Procedure |
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