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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 

Chilkat .NET Downloads

Chilkat .NET Framework

Chilkat for .NET Core

// 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>

bool success = true;

// Create the XML to be signed...

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

Chilkat.Xml xmlToSign = new Chilkat.Xml();
xmlToSign.Tag = "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","Regi�o 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","Pr�dio 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 endere�o 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","Regi�o 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","Pr�dio 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 endere�o 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","Telem�vel");
xmlToSign.UpdateChildContent("Invoice|Lines|Line|Item|Name","Telem�vel");
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 P�blico");
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");

Chilkat.XmlDSigGen gen = new Chilkat.XmlDSigGen();

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.
Chilkat.Xml object1 = new 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-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: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");
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)
Chilkat.Cert cert = new Chilkat.Cert();
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
if (success != true) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

gen.SetX509Cert(cert,true);

gen.KeyInfoType = "X509Data";
gen.X509Type = "IssuerSerial,SubjectName,Certificate";

// Load XML to be signed...
Chilkat.StringBuilder sbXml = new Chilkat.StringBuilder();
xmlToSign.GetXmlSb(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);
if (success != true) {
    Debug.WriteLine(gen.LastErrorText);
    return;
}

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

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

Debug.WriteLine(sbXml.GetAsString());

// ----------------------------------------
// Verify the signatures we just produced...
Chilkat.XmlDSig verifier = new Chilkat.XmlDSig();
success = verifier.LoadSignatureSb(sbXml);
if (success != true) {
    Debug.WriteLine(verifier.LastErrorText);
    return;
}

int numSigs = verifier.NumSignatures;
int verifyIdx = 0;
while (verifyIdx < numSigs) {
    verifier.Selector = verifyIdx;
    bool verified = verifier.VerifySignature(true);
    if (verified != true) {
        Debug.WriteLine(verifier.LastErrorText);
        return;
    }

    verifyIdx = verifyIdx + 1;
}

Debug.WriteLine("All signatures were successfully verified.");
 

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