(Objective-C) Create EBICS SignaturePubKeyOrderData XML

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Demonstrates how to create the EBICS SignaturePubKeyOrderData XML. (EBICS is the Electronic Banking Internet Communication Standard)

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#import <CkoCert.h>
#import <CkoXml.h>
#import <CkoPublicKey.h>

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

// The goal of this example is to create the XML shown below from the certificate to be used for signing.

// <?xml version="1.0" encoding="UTF-8"?>
// <SignaturePubKeyOrderData xmlns="http://www.ebics.org/S001" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ebics.org/S002">
//   <SignaturePubKeyInfo>
//     <ds:X509Data>
//       <X509IssuerSerial>
//         <ds:X509IssuerName>C=FR, O=Example, OU=1234, CN=Example eID User, OrganizationID=SI:FR-1234</ds:X509IssuerName>
//         <ds:X509SerialNumber>73FFFFB881F1629982F787DF161EFFFF</ds:X509SerialNumber>
//       </X509IssuerSerial>
//       <ds:X509Certificate>
//         MIIJT...kE=
//       </ds:X509Certificate>
//     </ds:X509Data>
//     <PubKeyValue>
//       <ds:RSAPublicKey>
//        <ds:Modulus>wedQ...22Kw==</ds:Modulus>
//         <ds:Exponent>AQAB</ds:Exponent>
//       </ds:RSAPublicKey>
//     </PubKeyValue>
//     <SignatureVersion>A005</SignatureVersion>
//   </SignaturePubKeyInfo>
//   <PartnerID/>
//   <UserID/>
// </SignaturePubKeyOrderData>

CkoCert *cert = [[CkoCert alloc] init];
BOOL success = [cert LoadPfxFile: @"qa_data/pfx/cert_test123.pfx" password: @"test123"];
if (success == NO) {
    NSLog(@"%@",cert.LastErrorText);
    return;
}

CkoXml *xml = [[CkoXml alloc] init];
xml.Tag = @"SignaturePubKeyOrderData";
[xml AddAttribute: @"xmlns" value: @"http://www.ebics.org/S001"];
[xml AddAttribute: @"xmlns:ds" value: @"http://www.w3.org/2000/09/xmldsig#"];
[xml AddAttribute: @"xmlns:xsi" value: @"http://www.w3.org/2001/XMLSchema-instance"];
[xml AddAttribute: @"xsi:schemaLocation" value: @"http://www.ebics.org/S002"];
[xml UpdateChildContent: @"SignaturePubKeyInfo|ds:X509Data|X509IssuerSerial|ds:X509IssuerName" value: cert.IssuerDN];
[xml UpdateChildContent: @"SignaturePubKeyInfo|ds:X509Data|X509IssuerSerial|ds:X509SerialNumber" value: cert.SerialNumber];
[xml UpdateChildContent: @"SignaturePubKeyInfo|ds:X509Data|ds:X509Certificate" value: [cert GetEncoded]];

CkoPublicKey *pubkey = [cert ExportPublicKey];
CkoXml *xmlPubKey = [[CkoXml alloc] init];
[xmlPubKey LoadXml: [pubkey GetXml]];

// The public key XML will look like this:
// 
// <RSAPublicKey>
//   <Modulus>...</Modulus>
//   <Exponent>...</Exponent>
// </RSAPublicKey>

[xml UpdateChildContent: @"SignaturePubKeyInfo|PubKeyValue|ds:RSAPublicKey|ds:Modulus" value: [xmlPubKey GetChildContent: @"Modulus"]];
[xml UpdateChildContent: @"SignaturePubKeyInfo|PubKeyValue|ds:RSAPublicKey|ds:Exponent" value: [xmlPubKey GetChildContent: @"Exponent"]];
[xml UpdateChildContent: @"SignaturePubKeyInfo|SignatureVersion" value: @"A005"];
[xml UpdateChildContent: @"PartnerID" value: @""];
[xml UpdateChildContent: @"UserID" value: @""];

NSLog(@"%@",[xml GetXml]);