Sample code for 30+ languages & platforms
Swift

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 Swift Downloads

Swift

func chilkatTest() {
    var success: Bool = false

    // 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>Regi�o do Emissor</Region>
    //                 <Street>Rua do Emissor</Street>
    //                 <StreetDetail>Detalhe da rua do Emissor</StreetDetail>
    //                 <BuildingName>Pr�dio do Emissor</BuildingName>
    //                 <BuildingNumber>1</BuildingNumber>
    //                 <BuildingFloor>2</BuildingFloor>
    //                 <PostalCode>7600</PostalCode>
    //                 <AddressDetail>Detalhe de endere�o 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>Regi�o do Recetor</Region>
    //                 <Street>Rua do Recetor</Street>
    //                 <StreetDetail>Detalhe da rua do Recetor</StreetDetail>
    //                 <BuildingName>Pr�dio do Recetor</BuildingName>
    //                 <BuildingNumber>2</BuildingNumber>
    //                 <BuildingFloor>3</BuildingFloor>
    //                 <PostalCode>7601</PostalCode>
    //                 <AddressDetail>Detalhe de endere�o 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>Telem�vel</Description>
    //                     <Name>Telem�vel</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 P�blico</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

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

    let gen = CkoXmlDSigGen()!

    gen.sigLocation = "Dfe"
    gen.sigLocationMod = 0
    gen.sigId = "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac"
    gen.sigNamespacePrefix = "ds"
    gen.sigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
    gen.sigValueId = "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-sigvalue"
    gen.signedInfoCanonAlg = "C14N"
    gen.signedInfoDigestMethod = "sha256"

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

    // Create an Object to be added to the Signature.
    let object1 = CkoXml()!
    object1.tag = "xades:QualifyingProperties"
    object1.addAttribute(name: "xmlns:xades", value: "http://uri.etsi.org/01903/v1.3.2#")
    object1.addAttribute(name: "xmlns:xades141", value: "http://uri.etsi.org/01903/v1.4.1#")
    object1.addAttribute(name: "Target", value: "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac")
    object1.updateAttrAt(tagPath: "xades:SignedProperties", autoCreate: true, attrName: "Id", attrValue: "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime", value: "TO BE GENERATED BY CHILKAT")
    object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod", autoCreate: true, attrName: "Algorithm", attrValue: "http://www.w3.org/2001/04/xmlenc#sha256")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue", value: "TO BE GENERATED BY CHILKAT")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2", value: "TO BE GENERATED BY CHILKAT")
    object1.updateAttrAt(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat", autoCreate: true, attrName: "ObjectReference", attrValue: "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description", value: "DFE Signature")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier", value: "efatura-uri")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference", value: "https://efatura.cv")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType", value: "text/xml")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding", value: "UTF-8")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier", value: "http://uri.etsi.org/01903/v1.2.2#ProofOfApproval")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Description", value: "Indicates that the signer has approved the content of the signed data object")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects", value: "")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Identifier", value: "http://uri.etsi.org/01903/v1.2.2#ProofOfOrigin")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Description", value: "Indicates that the signer recognizes to have created, approved and sent the signed data object")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:ObjectReference", value: "#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")
    object1.updateChildContent(tagPath: "xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeQualifiers|xades:CommitmentTypeQualifier", value: "CV-FE-123456789")

    gen.add(id: "", content: object1.getXml(), mimeType: "", encoding: "")

    // -------- Reference 1 --------
    gen.addSameDocRef(id: "CV2210818123456789000010100000000546735014601", digestMethod: "sha256", canonMethod: "", prefixList: "", refType: "")
    gen.setRefIdAttr(uri_or_id: "CV2210818123456789000010100000000546735014601", value: "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0")

    // -------- Reference 2 --------
    gen.addSameDocRef(id: "xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo", digestMethod: "sha256", canonMethod: "C14N", prefixList: "", refType: "")

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

    // Provide a certificate + private key. (PFX password is test123)
    let cert = CkoCert()!
    success = cert.loadPfxFile(path: "qa_data/pfx/cert_test123.pfx", password: "test123")
    if success != true {
        print("\(cert.lastErrorText!)")
        return
    }

    gen.setX509Cert(cert: cert, usePrivateKey: true)

    gen.keyInfoType = "X509Data"
    gen.x509Type = "IssuerSerial,SubjectName,Certificate"

    // Load XML to be signed...
    let sbXml = CkoStringBuilder()!
    xmlToSign.getSb(sb: sbXml)

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

    // Sign the XML...
    success = gen.createXmlDSigSb(sbXml: sbXml)
    if success != true {
        print("\(gen.lastErrorText!)")
        return
    }

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

    // Save the signed XML to a file.
    success = sbXml.writeFile(path: "qa_output/signedXml.xml", charset: "utf-8", emitBom: false)

    print("\(sbXml.getAsString()!)")

    // ----------------------------------------
    // Verify the signatures we just produced...
    let verifier = CkoXmlDSig()!
    success = verifier.loadSignatureSb(sbXmlSig: sbXml)
    if success != true {
        print("\(verifier.lastErrorText!)")
        return
    }

    var numSigs: Int = verifier.numSignatures.intValue
    var verifyIdx: Int = 0
    while verifyIdx < numSigs {
        verifier.selector = verifyIdx
        var verified: Bool = verifier.verifySignature(verifyReferenceDigests: true)
        if verified != true {
            print("\(verifier.lastErrorText!)")
            return
        }

        verifyIdx = verifyIdx + 1
    }

    print("All signatures were successfully verified.")

}