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(Go) Cape Verde Fatura Eletrónica XML Digital Signature

See more XML Digital Signatures Examples

Demonstrates how to sign XML to create a signed invoice compatible with the Cape Verde Fatura Eletrónica requirements.

Note: This example requires Chilkat v9.5.0.89 or greater for a small feature to provide the ability produce mult-line base64 signature ending with 

Chilkat Go Downloads

Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // First create the following XML to be signed.  This can be created programmatically as shown in the code below, or 
    // you can simply load the XML to be signed from a file..

    // <?xml version="1.0" encoding="utf-8"?>
    // <Dfe xmlns="urn:cv:efatura:xsd:v1.0" DocumentTypeCode="1" Id="CV2210818123456789000010100000000546735014601" Version="1.0">
    //     <Invoice>
    //         <LedCode>1</LedCode>
    //         <Serie>SL</Serie>
    //         <DocumentNumber>5</DocumentNumber>
    //         <IssueDate>2021-08-30</IssueDate>
    //         <IssueTime>00:01:00</IssueTime>
    //         <TaxPointDate>2021-08-18</TaxPointDate>
    //         <EmitterParty>
    //             <TaxId CountryCode="CV">123456789</TaxId>
    //             <Name>Maria</Name>
    //             <Address CountryCode="CV">
    //                 <State>Estado do Emissor</State>
    //                 <City>Cidade do Emissor</City>
    //                 <Region>Regio do Emissor</Region>
    //                 <Street>Rua do Emissor</Street>
    //                 <StreetDetail>Detalhe da rua do Emissor</StreetDetail>
    //                 <BuildingName>Prdio do Emissor</BuildingName>
    //                 <BuildingNumber>1</BuildingNumber>
    //                 <BuildingFloor>2</BuildingFloor>
    //                 <PostalCode>7600</PostalCode>
    //                 <AddressDetail>Detalhe de endereo do Emissor</AddressDetail>
    //                 <AddressCode>CV774999999999999319</AddressCode>
    //             </Address>
    //             <Contacts>
    //                 <Telephone>1234567</Telephone>
    //                 <Mobilephone>1234568</Mobilephone>
    //                 <Telefax>1234569</Telefax>
    //                 <Email>somebody@example.com</Email>
    //                 <Website>emissor.efatura.cv</Website>
    //             </Contacts>
    //         </EmitterParty>
    //         <ReceiverParty>
    //             <TaxId CountryCode="CV">123456789</TaxId>
    //             <Name>Nome do Recetor</Name>
    //             <Address CountryCode="CV">
    //                 <State>Estado do Recetor</State>
    //                 <City>Cidade do Recetor</City>
    //                 <Region>Regio do Recetor</Region>
    //                 <Street>Rua do Recetor</Street>
    //                 <StreetDetail>Detalhe da rua do Recetor</StreetDetail>
    //                 <BuildingName>Prdio do Recetor</BuildingName>
    //                 <BuildingNumber>2</BuildingNumber>
    //                 <BuildingFloor>3</BuildingFloor>
    //                 <PostalCode>7601</PostalCode>
    //                 <AddressDetail>Detalhe de endereo do Recetor</AddressDetail>
    //                 <AddressCode>CV774999999999999319</AddressCode>
    //             </Address>
    //             <Contacts>
    //                 <Telephone>2234567</Telephone>
    //                 <Mobilephone>2234568</Mobilephone>
    //                 <Telefax>2234569</Telefax>
    //                 <Email>rector@efatura.cv</Email>
    //                 <Website>rector.efatura.cv</Website>
    //             </Contacts>
    //         </ReceiverParty>
    //         <Lines>
    //             <Line LineTypeCode="N">
    //                 <Id>01</Id>
    //                 <OrderLineReference>1</OrderLineReference>
    //                 <Quantity UnitCode="EA">3.15</Quantity>
    //                 <Price>123456</Price>
    //                 <PriceExtension>388886</PriceExtension>
    //                 <Discount>15</Discount>
    //                 <NetTotal>252776</NetTotal>
    //                 <Tax TaxTypeCode="IVA">
    //                     <TaxPercentage>15</TaxPercentage>
    //                 </Tax>
    //                 <Item>
    //                     <Description>Telemvel</Description>
    //                     <Name>Telemvel</Name>
    //                     <BrandName>Apple</BrandName>
    //                     <ModelName>iPhone X</ModelName>
    //                     <EmitterIdentification>TLMV</EmitterIdentification>
    //                     <StandardIdentification>
    //                         <GTIN>12345</GTIN>
    //                     </StandardIdentification>
    //                     <HazardousRiskIndicator>false</HazardousRiskIndicator>
    //                 </Item>
    //             </Line>
    //         </Lines>
    //         <Totals>
    //             <PriceExtensionTotalAmount>388886</PriceExtensionTotalAmount>
    //             <ChargeTotalAmount>0</ChargeTotalAmount>
    //             <DiscountTotalAmount>136110</DiscountTotalAmount>
    //             <NetTotalAmount>252776</NetTotalAmount>
    //             <Discount ValueType="P">20</Discount>
    //             <TaxTotalAmount>37916</TaxTotalAmount>
    //             <PayableAmount>290692</PayableAmount>
    //         </Totals>
    //         <References>
    //             <Reference>
    //                 <FiscalDocument IsOldDocument="false">CV1200520123456789000112345678901112345678901</FiscalDocument>
    //                 <PaymentAmount>12345</PaymentAmount>
    //                 <Tax TaxTypeCode="IR">
    //                     <TaxPercentage>10</TaxPercentage>
    //                 </Tax>
    //             </Reference>
    //             <Reference>
    //                 <FiscalDocument IsOldDocument="false">CV1200520123456789000112345678901112345678903</FiscalDocument>
    //                 <PaymentAmount>98765</PaymentAmount>
    //                 <Tax TaxTypeCode="IVA">
    //                     <TaxPercentage>15</TaxPercentage>
    //                 </Tax>
    //             </Reference>
    //         </References>
    //         <Payments>
    //             <PaymentDueDate>2021-12-31</PaymentDueDate>
    //             <PaymentTerms>
    //                 <Note>Juros de 12% a partir da data de vencimento</Note>
    //             </PaymentTerms>
    //             <PayeeFinancialAccount>
    //                 <NIB>123456789012345678901</NIB>
    //                 <Name>Nome da Conta 1</Name>
    //             </PayeeFinancialAccount>
    //             <PayeeFinancialAccount>
    //                 <NIB>123456789012345678902</NIB>
    //                 <Name>Nome da Conta 2</Name>
    //             </PayeeFinancialAccount>
    //         </Payments>
    //         <Note>Texto livre</Note>
    //     </Invoice>
    //     <Transmission>
    //         <IssueMode>2</IssueMode>
    //         <TransmitterTaxId CountryCode="CV">123456789</TransmitterTaxId>
    //         <Software>
    //             <Code>EMIPUB</Code>
    //             <Name>DNRE Emissor Pblico</Name>
    //             <Version>Build #53 12-07-2021 14:00:47 CVT - master</Version>
    //         </Software>
    //         <Contingency>
    //             <LedCode>1</LedCode>
    //             <IssueDate>2020-01-01</IssueDate>
    //             <IssueTime>01:02:03</IssueTime>
    //             <ReasonTypeCode>1</ReasonTypeCode>
    //         </Contingency>
    //     </Transmission>
    //     <RepositoryCode>2</RepositoryCode>
    // </Dfe>

    success := true

    // Create the XML to be signed...

    // Use this online tool to generate code from sample XML: 
    // Generate Code to Create XML

    xmlToSign := chilkat.NewXml()
    xmlToSign.SetTag("Dfe")
    xmlToSign.AddAttribute("xmlns","urn:cv:efatura:xsd:v1.0")
    xmlToSign.AddAttribute("DocumentTypeCode","1")
    xmlToSign.AddAttribute("Id","CV2210818123456789000010100000000546735014601")
    xmlToSign.AddAttribute("Version","1.0")
    xmlToSign.UpdateChildContent("Invoice|LedCode","1")
    xmlToSign.UpdateChildContent("Invoice|Serie","SL")
    xmlToSign.UpdateChildContent("Invoice|DocumentNumber","5")
    xmlToSign.UpdateChildContent("Invoice|IssueDate","2021-08-30")
    xmlToSign.UpdateChildContent("Invoice|IssueTime","00:01:00")
    xmlToSign.UpdateChildContent("Invoice|TaxPointDate","2021-08-18")
    xmlToSign.UpdateAttrAt("Invoice|EmitterParty|TaxId",true,"CountryCode","CV")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|TaxId","123456789")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Name","Maria")
    xmlToSign.UpdateAttrAt("Invoice|EmitterParty|Address",true,"CountryCode","CV")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|State","Estado do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|City","Cidade do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|Region","Regio do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|Street","Rua do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|StreetDetail","Detalhe da rua do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|BuildingName","Prdio do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|BuildingNumber","1")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|BuildingFloor","2")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|PostalCode","7600")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|AddressDetail","Detalhe de endereo do Emissor")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Address|AddressCode","CV774999999999999319")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Contacts|Telephone","1234567")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Contacts|Mobilephone","1234568")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Contacts|Telefax","1234569")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Contacts|Email","somebody@example.com")
    xmlToSign.UpdateChildContent("Invoice|EmitterParty|Contacts|Website","emissor.efatura.cv")
    xmlToSign.UpdateAttrAt("Invoice|ReceiverParty|TaxId",true,"CountryCode","CV")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|TaxId","123456789")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Name","Nome do Recetor")
    xmlToSign.UpdateAttrAt("Invoice|ReceiverParty|Address",true,"CountryCode","CV")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|State","Estado do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|City","Cidade do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|Region","Regio do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|Street","Rua do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|StreetDetail","Detalhe da rua do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|BuildingName","Prdio do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|BuildingNumber","2")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|BuildingFloor","3")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|PostalCode","7601")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|AddressDetail","Detalhe de endereo do Recetor")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Address|AddressCode","CV774999999999999319")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Contacts|Telephone","2234567")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Contacts|Mobilephone","2234568")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Contacts|Telefax","2234569")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Contacts|Email","rector@efatura.cv")
    xmlToSign.UpdateChildContent("Invoice|ReceiverParty|Contacts|Website","rector.efatura.cv")
    xmlToSign.UpdateAttrAt("Invoice|Lines|Line",true,"LineTypeCode","N")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Id","01")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|OrderLineReference","1")
    xmlToSign.UpdateAttrAt("Invoice|Lines|Line|Quantity",true,"UnitCode","EA")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Quantity","3.15")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Price","123456")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|PriceExtension","388886")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Discount","15")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|NetTotal","252776")
    xmlToSign.UpdateAttrAt("Invoice|Lines|Line|Tax",true,"TaxTypeCode","IVA")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Tax|TaxPercentage","15")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|Description","Telemvel")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|Name","Telemvel")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|BrandName","Apple")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|ModelName","iPhone X")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|EmitterIdentification","TLMV")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|StandardIdentification|GTIN","12345")
    xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|HazardousRiskIndicator","false")
    xmlToSign.UpdateChildContent("Invoice|Totals|PriceExtensionTotalAmount","388886")
    xmlToSign.UpdateChildContent("Invoice|Totals|ChargeTotalAmount","0")
    xmlToSign.UpdateChildContent("Invoice|Totals|DiscountTotalAmount","136110")
    xmlToSign.UpdateChildContent("Invoice|Totals|NetTotalAmount","252776")
    xmlToSign.UpdateAttrAt("Invoice|Totals|Discount",true,"ValueType","P")
    xmlToSign.UpdateChildContent("Invoice|Totals|Discount","20")
    xmlToSign.UpdateChildContent("Invoice|Totals|TaxTotalAmount","37916")
    xmlToSign.UpdateChildContent("Invoice|Totals|PayableAmount","290692")
    xmlToSign.UpdateAttrAt("Invoice|References|Reference|FiscalDocument",true,"IsOldDocument","false")
    xmlToSign.UpdateChildContent("Invoice|References|Reference|FiscalDocument","CV1200520123456789000112345678901112345678901")
    xmlToSign.UpdateChildContent("Invoice|References|Reference|PaymentAmount","12345")
    xmlToSign.UpdateAttrAt("Invoice|References|Reference|Tax",true,"TaxTypeCode","IR")
    xmlToSign.UpdateChildContent("Invoice|References|Reference|Tax|TaxPercentage","10")
    xmlToSign.UpdateAttrAt("Invoice|References|Reference[1]|FiscalDocument",true,"IsOldDocument","false")
    xmlToSign.UpdateChildContent("Invoice|References|Reference[1]|FiscalDocument","CV1200520123456789000112345678901112345678903")
    xmlToSign.UpdateChildContent("Invoice|References|Reference[1]|PaymentAmount","98765")
    xmlToSign.UpdateAttrAt("Invoice|References|Reference[1]|Tax",true,"TaxTypeCode","IVA")
    xmlToSign.UpdateChildContent("Invoice|References|Reference[1]|Tax|TaxPercentage","15")
    xmlToSign.UpdateChildContent("Invoice|Payments|PaymentDueDate","2021-12-31")
    xmlToSign.UpdateChildContent("Invoice|Payments|PaymentTerms|Note","Juros de 12% a partir da data de vencimento")
    xmlToSign.UpdateChildContent("Invoice|Payments|PayeeFinancialAccount|NIB","123456789012345678901")
    xmlToSign.UpdateChildContent("Invoice|Payments|PayeeFinancialAccount|Name","Nome da Conta 1")
    xmlToSign.UpdateChildContent("Invoice|Payments|PayeeFinancialAccount[1]|NIB","123456789012345678902")
    xmlToSign.UpdateChildContent("Invoice|Payments|PayeeFinancialAccount[1]|Name","Nome da Conta 2")
    xmlToSign.UpdateChildContent("Invoice|Note","Texto livre")
    xmlToSign.UpdateChildContent("Transmission|IssueMode","2")
    xmlToSign.UpdateAttrAt("Transmission|TransmitterTaxId",true,"CountryCode","CV")
    xmlToSign.UpdateChildContent("Transmission|TransmitterTaxId","123456789")
    xmlToSign.UpdateChildContent("Transmission|Software|Code","EMIPUB")
    xmlToSign.UpdateChildContent("Transmission|Software|Name","DNRE Emissor Pblico")
    xmlToSign.UpdateChildContent("Transmission|Software|Version","Build #53 12-07-2021 14:00:47 CVT - master")
    xmlToSign.UpdateChildContent("Transmission|Contingency|LedCode","1")
    xmlToSign.UpdateChildContent("Transmission|Contingency|IssueDate","2020-01-01")
    xmlToSign.UpdateChildContent("Transmission|Contingency|IssueTime","01:02:03")
    xmlToSign.UpdateChildContent("Transmission|Contingency|ReasonTypeCode","1")
    xmlToSign.UpdateChildContent("RepositoryCode","2")

    gen := chilkat.NewXmlDSigGen()

    gen.SetSigLocation("Dfe")
    gen.SetSigLocationMod(0)
    gen.SetSigId("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac")
    gen.SetSigNamespacePrefix("ds")
    gen.SetSigNamespaceUri("http://www.w3.org/2000/09/xmldsig#")
    gen.SetSigValueId("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-sigvalue")
    gen.SetSignedInfoCanonAlg("C14N")
    gen.SetSignedInfoDigestMethod("sha256")

    // Set the KeyInfoId before adding references..
    gen.SetKeyInfoId("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo")

    // Create an Object to be added to the Signature.
    object1 := chilkat.NewXml()
    object1.SetTag("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-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac")
    object1.UpdateAttrAt("xades:SignedProperties",true,"Id","xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT")
    object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT")
    object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT")
    object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT")
    object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",true,"ObjectReference","#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","DFE Signature")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier","efatura-uri")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference","https://efatura.cv")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","UTF-8")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier","http://uri.etsi.org/01903/v1.2.2#ProofOfApproval")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Description","Indicates that the signer has approved the content of the signed data object")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects","")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Identifier","http://uri.etsi.org/01903/v1.2.2#ProofOfOrigin")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Description","Indicates that the signer recognizes to have created, approved and sent the signed data object")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:ObjectReference","#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeQualifiers|xades:CommitmentTypeQualifier","CV-FE-123456789")

    gen.AddObject("",*object1.GetXml(),"","")

    // -------- Reference 1 --------
    gen.AddSameDocRef("CV2210818123456789000010100000000546735014601","sha256","","","")
    gen.SetRefIdAttr("CV2210818123456789000010100000000546735014601","xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")

    // -------- Reference 2 --------
    gen.AddSameDocRef("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo","sha256","C14N","","")

    // -------- Reference 3 --------
    gen.AddObjectRef("xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops","sha256","C14N","","http://uri.etsi.org/01903#SignedProperties")

    // Provide a certificate + private key. (PFX password is test123)
    cert := chilkat.NewCert()
    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
    if success != true {
        fmt.Println(cert.LastErrorText())
        xmlToSign.DisposeXml()
        gen.DisposeXmlDSigGen()
        object1.DisposeXml()
        cert.DisposeCert()
        return
    }

    gen.SetX509Cert(cert,true)

    gen.SetKeyInfoType("X509Data")
    gen.SetX509Type("IssuerSerial,SubjectName,Certificate")

    // Load XML to be signed...
    sbXml := chilkat.NewStringBuilder()
    xmlToSign.GetXmlSb(sbXml)

    // Note: The last keyword (Base64Cr13Entity) requires Chilkat v9.5.0.89 or later.
    gen.SetBehaviors("IndentedSignature,Base64Cr13Entity,ForceAddEnvelopedSignatureTransform,Base64Cr13Entity")

    // Sign the XML...
    success = gen.CreateXmlDSigSb(sbXml)
    if success != true {
        fmt.Println(gen.LastErrorText())
        xmlToSign.DisposeXml()
        gen.DisposeXmlDSigGen()
        object1.DisposeXml()
        cert.DisposeCert()
        sbXml.DisposeStringBuilder()
        return
    }

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

    // Save the signed XML to a file.
    success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",false)

    fmt.Println(*sbXml.GetAsString())

    // ----------------------------------------
    // Verify the signatures we just produced...
    verifier := chilkat.NewXmlDSig()
    success = verifier.LoadSignatureSb(sbXml)
    if success != true {
        fmt.Println(verifier.LastErrorText())
        xmlToSign.DisposeXml()
        gen.DisposeXmlDSigGen()
        object1.DisposeXml()
        cert.DisposeCert()
        sbXml.DisposeStringBuilder()
        verifier.DisposeXmlDSig()
        return
    }

    numSigs := verifier.NumSignatures()
    verifyIdx := 0
    for verifyIdx < numSigs {
        verifier.SetSelector(verifyIdx)
        verified := verifier.VerifySignature(true)
        if verified != true {
            fmt.Println(verifier.LastErrorText())
            xmlToSign.DisposeXml()
            gen.DisposeXmlDSigGen()
            object1.DisposeXml()
            cert.DisposeCert()
            sbXml.DisposeStringBuilder()
            verifier.DisposeXmlDSig()
            return
        }

        verifyIdx = verifyIdx + 1
    }

    fmt.Println("All signatures were successfully verified.")

    xmlToSign.DisposeXml()
    gen.DisposeXmlDSigGen()
    object1.DisposeXml()
    cert.DisposeCert()
    sbXml.DisposeStringBuilder()
    verifier.DisposeXmlDSig()
 

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