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(C) 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 

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#include <C_CkXml.h>
#include <C_CkXmlDSigGen.h>
#include <C_CkCert.h>
#include <C_CkStringBuilder.h>
#include <C_CkXmlDSig.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkXml xmlToSign;
    HCkXmlDSigGen gen;
    HCkXml object1;
    HCkCert cert;
    HCkStringBuilder sbXml;
    HCkXmlDSig verifier;
    int numSigs;
    int verifyIdx;
    BOOL verified;

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

    gen = CkXmlDSigGen_Create();

    CkXmlDSigGen_putSigLocation(gen,"Dfe");
    CkXmlDSigGen_putSigLocationMod(gen,0);
    CkXmlDSigGen_putSigId(gen,"xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac");
    CkXmlDSigGen_putSigNamespacePrefix(gen,"ds");
    CkXmlDSigGen_putSigNamespaceUri(gen,"http://www.w3.org/2000/09/xmldsig#");
    CkXmlDSigGen_putSigValueId(gen,"xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-sigvalue");
    CkXmlDSigGen_putSignedInfoCanonAlg(gen,"C14N");
    CkXmlDSigGen_putSignedInfoDigestMethod(gen,"sha256");

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

    // Create an Object to be added to the Signature.
    object1 = CkXml_Create();
    CkXml_putTag(object1,"xades:QualifyingProperties");
    CkXml_AddAttribute(object1,"xmlns:xades","http://uri.etsi.org/01903/v1.3.2#");
    CkXml_AddAttribute(object1,"xmlns:xades141","http://uri.etsi.org/01903/v1.4.1#");
    CkXml_AddAttribute(object1,"Target","#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac");
    CkXml_UpdateAttrAt(object1,"xades:SignedProperties",TRUE,"Id","xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateAttrAt(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",TRUE,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateAttrAt(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestMethod",TRUE,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[1]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateAttrAt(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestMethod",TRUE,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert[2]|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT");
    CkXml_UpdateAttrAt(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",TRUE,"ObjectReference","#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description","DFE Signature");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier","efatura-uri");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference","https://efatura.cv");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding","UTF-8");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier","http://uri.etsi.org/01903/v1.2.2#ProofOfApproval");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Description","Indicates that the signer has approved the content of the signed data object");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects","");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Identifier","http://uri.etsi.org/01903/v1.2.2#ProofOfOrigin");
    CkXml_UpdateChildContent(object1,"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");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:ObjectReference","#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");
    CkXml_UpdateChildContent(object1,"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeQualifiers|xades:CommitmentTypeQualifier","CV-FE-123456789");

    CkXmlDSigGen_AddObject(gen,"",CkXml_getXml(object1),"","");

    // -------- Reference 1 --------
    CkXmlDSigGen_AddSameDocRef(gen,"CV2210818123456789000010100000000546735014601","sha256","","","");
    CkXmlDSigGen_SetRefIdAttr(gen,"CV2210818123456789000010100000000546735014601","xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0");

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

    // -------- Reference 3 --------
    CkXmlDSigGen_AddObjectRef(gen,"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 = CkCert_Create();
    success = CkCert_LoadPfxFile(cert,"qa_data/pfx/cert_test123.pfx","test123");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkXml_Dispose(xmlToSign);
        CkXmlDSigGen_Dispose(gen);
        CkXml_Dispose(object1);
        CkCert_Dispose(cert);
        return;
    }

    CkXmlDSigGen_SetX509Cert(gen,cert,TRUE);

    CkXmlDSigGen_putKeyInfoType(gen,"X509Data");
    CkXmlDSigGen_putX509Type(gen,"IssuerSerial,SubjectName,Certificate");

    // Load XML to be signed...
    sbXml = CkStringBuilder_Create();
    CkXml_GetXmlSb(xmlToSign,sbXml);

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

    // Sign the XML...
    success = CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
    if (success != TRUE) {
        printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
        CkXml_Dispose(xmlToSign);
        CkXmlDSigGen_Dispose(gen);
        CkXml_Dispose(object1);
        CkCert_Dispose(cert);
        CkStringBuilder_Dispose(sbXml);
        return;
    }

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

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

    printf("%s\n",CkStringBuilder_getAsString(sbXml));

    // ----------------------------------------
    // Verify the signatures we just produced...
    verifier = CkXmlDSig_Create();
    success = CkXmlDSig_LoadSignatureSb(verifier,sbXml);
    if (success != TRUE) {
        printf("%s\n",CkXmlDSig_lastErrorText(verifier));
        CkXml_Dispose(xmlToSign);
        CkXmlDSigGen_Dispose(gen);
        CkXml_Dispose(object1);
        CkCert_Dispose(cert);
        CkStringBuilder_Dispose(sbXml);
        CkXmlDSig_Dispose(verifier);
        return;
    }

    numSigs = CkXmlDSig_getNumSignatures(verifier);
    verifyIdx = 0;
    while (verifyIdx < numSigs) {
        CkXmlDSig_putSelector(verifier,verifyIdx);
        verified = CkXmlDSig_VerifySignature(verifier,TRUE);
        if (verified != TRUE) {
            printf("%s\n",CkXmlDSig_lastErrorText(verifier));
            CkXml_Dispose(xmlToSign);
            CkXmlDSigGen_Dispose(gen);
            CkXml_Dispose(object1);
            CkCert_Dispose(cert);
            CkStringBuilder_Dispose(sbXml);
            CkXmlDSig_Dispose(verifier);
            return;
        }

        verifyIdx = verifyIdx + 1;
    }

    printf("All signatures were successfully verified.\n");


    CkXml_Dispose(xmlToSign);
    CkXmlDSigGen_Dispose(gen);
    CkXml_Dispose(object1);
    CkCert_Dispose(cert);
    CkStringBuilder_Dispose(sbXml);
    CkXmlDSig_Dispose(verifier);

    }
 

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