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(C++) Create XAdES using Smart Card or USB Token

Demonstrates how to create an XAdES signed XML document using a certificate located on a smartcard or USB token.

Note: This example requires Chilkat v9.5.0.75 or greater. Also, at the time of this writing this example is restricted to the Windows operating system.

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#include <CkXml.h>
#include <CkXmlDSigGen.h>
#include <CkCert.h>
#include <CkStringBuilder.h>
#include <CkXmlDSig.h>

void ChilkatSample(void)
    {
    // ----------------------------------------------------------------------
    // IMPORTANT: This generated example requires Chilkat v9.5.0.75 or later.
    // Contact support@chilkatsoft.com for a pre-release.
    // ----------------------------------------------------------------------

    // Load the XML to be signed.
    CkXml xmlToSign;
    bool success = xmlToSign.LoadXmlFile("qa_data/fattura_electronica/docToSign.xml");
    if (success != true) {
        std::cout << xmlToSign.lastErrorText() << "\r\n";
        return;
    }

    CkXmlDSigGen gen;

    gen.put_SigLocation("p:FatturaElettronica");
    gen.put_SigId("xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504");
    gen.put_SigNamespacePrefix("ds");
    gen.put_SigNamespaceUri("http://www.w3.org/2000/09/xmldsig#");
    gen.put_SigValueId("xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-sigvalue");
    gen.put_SignedInfoCanonAlg("C14N");
    gen.put_SignedInfoDigestMethod("sha256");

    // Create an Object to be added to the Signature.
    // Note: Chilkat will automatically populate the strings indicated by "TO BE GENERATED BY CHILKAT" with actual/correct values
    // when the XML is signed.
    CkXml object1;
    object1.put_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-6f4b994a-7191-4bb1-ab3c-17549515b504");
    object1.UpdateAttrAt("xades:SignedProperties",true,"Id","xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-signedprops");
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT");
    object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName","TO BE GENERATED BY CHILKAT");
    object1.UpdateChildContent("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber","TO BE GENERATED BY CHILKAT");

    gen.AddObject("",object1.getXml(),"","");

    // -------- Reference 1 --------
    gen.put_KeyInfoId("xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-keyinfo");
    gen.AddSameDocRef("xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-keyinfo","sha256","","","");

    // -------- Reference 2 --------
    gen.AddSameDocRef("","sha256","","","");
    gen.SetRefIdAttr("","xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-ref0");

    // -------- Reference 3 --------
    gen.AddObjectRef("xmldsig-6f4b994a-7191-4bb1-ab3c-17549515b504-signedprops","sha256","","","http://uri.etsi.org/01903#SignedProperties");

    // ----------------------------------------------------------------
    //  Load a certificate that has been pre-installed on the Windows system
    //  This includes certificates on smartcards and USB tokens
    CkCert cert;
    // Load the certificate on the smartcard currently in the reader (or on the USB token).
    // Pass an empty string to allow Chilkat to automatically choose the CSP (Cryptographi Service Provider).
    // See Load Certificate on Smartcard for information about explicitly selecting a particular CSP.
    success = cert.LoadFromSmartcard("");
    if (success != true) {
        std::cout << cert.lastErrorText() << "\r\n";
        return;
    }

    //  You may provide the PIN here.  Otherwise Windows will display a PIN dialog.
    cert.put_SmartCardPin("000000");

    gen.SetX509Cert(cert,true);
    gen.put_KeyInfoType("X509Data");
    gen.put_X509Type("Certificate");

    // Load XML to be signed...
    CkStringBuilder sbXml;
    xmlToSign.GetXmlSb(sbXml);

    gen.put_Behaviors("IndentedSignature,ForceAddEnvelopedSignatureTransform");

    // Sign the XML...
    success = gen.CreateXmlDSigSb(sbXml);
    if (success != true) {
        std::cout << gen.lastErrorText() << "\r\n";
        return;
    }

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

    std::cout << sbXml.getAsString() << "\r\n";

    // ----------------------------------------
    // Verify the signature we just produced...
    CkXmlDSig verifier;
    success = verifier.LoadSignatureSb(sbXml);
    if (success != true) {
        std::cout << verifier.lastErrorText() << "\r\n";
        return;
    }

    bool verified = verifier.VerifySignature(true);
    if (verified != true) {
        std::cout << verifier.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "This signature was successfully verified." << "\r\n";
    }

 

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