(Objective-C) TicketBAI Sign XML Example 1

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First example to demonstrate how to sign XML for TicketBAI.

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#import <CkoXml.h>
#import <CkoXmlDSigGen.h>
#import <CkoCert.h>
#import <CkoStringBuilder.h>
#import <CkoXmlDSig.h>

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

BOOL success = YES;

// Create the XML to be signed...
CkoXml *xmlToSign = [[CkoXml alloc] init];
xmlToSign.Tag = @"T:TicketBai";
[xmlToSign AddAttribute: @"xmlns:T" value: @"urn:ticketbai:emision"];
[xmlToSign UpdateChildContent: @"Cabecera|IDVersionTBAI" value: @"1.2"];
[xmlToSign UpdateChildContent: @"Sujetos|Emisor|NIF" value: @"79732487C"];
[xmlToSign UpdateChildContent: @"Sujetos|Emisor|ApellidosNombreRazonSocial" value: @"ARRIOLA LEJARDI ANE"];
[xmlToSign UpdateChildContent: @"Sujetos|Destinatarios|IDDestinatario|NIF" value: @"B00000034"];
[xmlToSign UpdateChildContent: @"Sujetos|Destinatarios|IDDestinatario|ApellidosNombreRazonSocial" value: @"CONSULTORIA GALDETU"];
[xmlToSign UpdateChildContent: @"Factura|CabeceraFactura|SerieFactura" value: @"A2022"];
[xmlToSign UpdateChildContent: @"Factura|CabeceraFactura|NumFactura" value: @"0399"];
[xmlToSign UpdateChildContent: @"Factura|CabeceraFactura|FechaExpedicionFactura" value: @"06-05-2022"];
[xmlToSign UpdateChildContent: @"Factura|CabeceraFactura|HoraExpedicionFactura" value: @"10:30:28"];
[xmlToSign UpdateChildContent: @"Factura|DatosFactura|DescripcionFactura" value: @"Venta Fotocopistera"];
[xmlToSign UpdateChildContent: @"Factura|DatosFactura|ImporteTotalFactura" value: @"31.46"];
[xmlToSign UpdateChildContent: @"Factura|DatosFactura|Claves|IDClave|ClaveRegimenIvaOpTrascendencia" value: @"01"];
[xmlToSign UpdateChildContent: @"Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|TipoNoExenta" value: @"S1"];
[xmlToSign UpdateChildContent: @"Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|BaseImponible" value: @"26.00"];
[xmlToSign UpdateChildContent: @"Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|TipoImpositivo" value: @"21.00"];
[xmlToSign UpdateChildContent: @"Factura|TipoDesglose|DesgloseFactura|Sujeta|NoExenta|DetalleNoExenta|DesgloseIVA|DetalleIVA|CuotaImpuesto" value: @"5.46"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|EncadenamientoFacturaAnterior|SerieFacturaAnterior" value: @"A2022"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|EncadenamientoFacturaAnterior|NumFacturaAnterior" value: @"0398"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|EncadenamientoFacturaAnterior|FechaExpedicionFacturaAnterior" value: @"05-05-2022"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|EncadenamientoFacturaAnterior|SignatureValueFirmaFacturaAnterior" value: @"KwXaQec65SKpVP7EU9o4nUXOx7SAftIToFsxH+2j2tXPXhpBUnS26dhdSpiMl2DlTuqRsFdZfWyYazaGHgSRQHZZAnFtpbi4BeMk"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|Software|LicenciaTBAI" value: @"TBAIPRUEBA"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|Software|EntidadDesarrolladora|NIF" value: @"A48119820"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|Software|Nombre" value: @"DFBTBAI"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|Software|Version" value: @"1.04.00"];
[xmlToSign UpdateChildContent: @"HuellaTBAI|NumSerieDispositivo" value: @"GP4FC5J"];

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

gen.SigLocation = @"T:TicketBai";
gen.SigLocationMod = [NSNumber numberWithInt:0];
gen.SigId = @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-Signature";
gen.SigNamespacePrefix = @"ds";
gen.SigNamespaceUri = @"http://www.w3.org/2000/09/xmldsig#";
gen.SigValueId = @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignatureValue";
gen.SignedInfoCanonAlg = @"C14N";
gen.SignedInfoDigestMethod = @"sha256";

// Set the KeyInfoId before adding references..
gen.KeyInfoId = @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-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: @"Id" value: @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-QualifyingProperties"];
[object1 AddAttribute: @"Target" value: @"#Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-Signature"];
[object1 AddAttribute: @"xmlns:ds" value: @"http://www.w3.org/2000/09/xmldsig#"];
[object1 UpdateAttrAt: @"xades:SignedProperties" autoCreate: YES attrName: @"Id" attrValue: @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignedProperties"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/2001/04/xmlenc#sha512"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber" value: @"TO BE GENERATED BY CHILKAT"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyId|xades:Identifier" value: @"https://www.batuz.eus/fitxategiak/batuz/ticketbai/sinadura_elektronikoaren_zehaztapenak_especificaciones_de_la_firma_electronica_v1_0.pdf"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyId|xades:Description" value: @""];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyHash|ds:DigestMethod" autoCreate: YES attrName: @"Algorithm" attrValue: @"http://www.w3.org/2001/04/xmlenc#sha256"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyHash|ds:DigestValue" value: @"Quzn98x3PMbSHwbUzaj5f5KOpiH0u8bvmwbbbNkO9Es="];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedSignatureProperties|xades:SignaturePolicyIdentifier|xades:SignaturePolicyId|xades:SigPolicyQualifiers|xades:SigPolicyQualifier|xades:SPURI" value: @"https://www.batuz.eus/fitxategiak/batuz/ticketbai/sinadura_elektronikoaren_zehaztapenak_especificaciones_de_la_firma_electronica_v1_0.pdf"];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat" autoCreate: YES attrName: @"ObjectReference" attrValue: @"#Reference-7e6f3481-4acc-47de-90fd-67878ad15e8e"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Description" value: @""];
[object1 UpdateAttrAt: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier" autoCreate: YES attrName: @"Qualifier" attrValue: @"OIDAsURN"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Identifier" value: @"urn:oid:1.2.840.10003.5.109.10"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:ObjectIdentifier|xades:Description" value: @""];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType" value: @"text/xml"];
[object1 UpdateChildContent: @"xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:Encoding" value: @""];

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

// -------- Reference 1 --------
[gen AddSameDocRef: @"" digestMethod: @"sha512" canonMethod: @"C14N" prefixList: @"" refType: @"http://www.w3.org/2000/09/xmldsig#Object"];
[gen SetRefIdAttr: @"" value: @"Reference-7e6f3481-4acc-47de-90fd-67878ad15e8e"];

// -------- Reference 2 --------
[gen AddObjectRef: @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-SignedProperties" digestMethod: @"sha512" canonMethod: @"" prefixList: @"" refType: @"http://uri.etsi.org/01903#SignedProperties"];

// -------- Reference 3 --------
[gen AddSameDocRef: @"Signature-63c35f38-2b5f-4600-b3da-3ddee86d62b3-KeyInfo" digestMethod: @"sha512" canonMethod: @"" prefixList: @"" refType: @""];

// 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+KeyValue";
gen.X509Type = @"Certificate";

// Load XML to be signed...
CkoStringBuilder *sbXml = [[CkoStringBuilder alloc] init];
[xmlToSign GetXmlSb: sbXml];

gen.Behaviors = @"TransformSignatureXPath";

// 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_1.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.");