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Objective-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 Objective-C Downloads

Objective-C
#import <CkoXml.h>
#import <CkoXmlDSigGen.h>
#import <CkoCert.h>
#import <CkoStringBuilder.h>
#import <CkoXmlDSig.h>

BOOL success = NO;

// 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 = YES;

// Create the XML to be signed...

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

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

CkoXmlDSigGen *gen = [[CkoXmlDSigGen alloc] init];

gen.SigLocation = @"Dfe";
gen.SigLocationMod = [NSNumber numberWithInt: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.
CkoXml *object1 = [[CkoXml alloc] init];
object1.Tag = @"xades:QualifyingProperties";
[object1 AddAttribute: @"xmlns:xades" value: @"http://uri.etsi.org/01903/v1.3.2#"];
[object1 AddAttribute: @"xmlns:xades141" value: @"http://uri.etsi.org/01903/v1.4.1#"];
[object1 AddAttribute: @"Target" value: @"#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac"];
[object1 UpdateAttrAt: @"xades:SignedProperties" autoCreate: YES attrName: @"Id" attrValue: @"xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-signedprops"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/2001/04/xmlenc#sha256"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat" autoCreate: YES attrName: @"ObjectReference" attrValue: @"#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description" value: @"DFE Signature"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier" value: @"efatura-uri"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:DocumentationReferences|xades:DocumentationReference" value: @"https://efatura.cv"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType" value: @"text/xml"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding" value: @"UTF-8"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:CommitmentTypeId|xades:Identifier" value: @"http://uri.etsi.org/01903/v1.2.2#ProofOfApproval"];
[object1 UpdateChildContent: @"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: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication|xades:AllSignedDataObjects" value: @""];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeId|xades:Identifier" value: @"http://uri.etsi.org/01903/v1.2.2#ProofOfOrigin"];
[object1 UpdateChildContent: @"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: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:ObjectReference" value: @"#xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:CommitmentTypeIndication[1]|xades:CommitmentTypeQualifiers|xades:CommitmentTypeQualifier" value: @"CV-FE-123456789"];

[gen AddObject: @"" content: [object1 GetXml] mimeType: @"" encoding: @""];

// -------- Reference 1 --------
[gen AddSameDocRef: @"CV2210818123456789000010100000000546735014601" digestMethod: @"sha256" canonMethod: @"" prefixList: @"" refType: @""];
[gen SetRefIdAttr: @"CV2210818123456789000010100000000546735014601" value: @"xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-ref0"];

// -------- Reference 2 --------
[gen AddSameDocRef: @"xmldsig-cbd86598-e75e-4ae4-9a27-3b4ee2a789ac-keyinfo" digestMethod: @"sha256" canonMethod: @"C14N" prefixList: @"" refType: @""];

// -------- Reference 3 --------
[gen AddObjectRef: @"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)
CkoCert *cert = [[CkoCert alloc] init];
success = [cert LoadPfxFile: @"qa_data/pfx/cert_test123.pfx" password: @"test123"];
if (success != YES) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

[gen SetX509Cert: cert usePrivateKey: YES];

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

// Load XML to be signed...
CkoStringBuilder *sbXml = [[CkoStringBuilder alloc] init];
[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 != YES) {
    NSLog(@"%@",gen.LastErrorText);
    return;
}

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

// Save the signed XML to a file.
success = [sbXml WriteFile: @"qa_output/signedXml.xml" charset: @"utf-8" emitBom: NO];

NSLog(@"%@",[sbXml GetAsString]);

// ----------------------------------------
// Verify the signatures we just produced...
CkoXmlDSig *verifier = [[CkoXmlDSig alloc] init];
success = [verifier LoadSignatureSb: sbXml];
if (success != YES) {
    NSLog(@"%@",verifier.LastErrorText);
    return;
}

int numSigs = [verifier.NumSignatures intValue];
int verifyIdx = 0;
while (verifyIdx < numSigs) {
    verifier.Selector = [NSNumber numberWithInt: verifyIdx];
    BOOL verified = [verifier VerifySignature: YES];
    if (verified != YES) {
        NSLog(@"%@",verifier.LastErrorText);
        return;
    }

    verifyIdx = verifyIdx + 1;
}

NSLog(@"%@",@"All signatures were successfully verified.");