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(Unicode C++) XAdES using TSA Requiring Client Certificate

See more XML Digital Signatures Examples

Demonstrates how to create an XMLDSig (XAdES) signed document which includes an EncapsulatedTimestamp using a TSA (TimeStamp Authority) server requiring client certificate authentication. One such TSA is https://www3.postsignum.cz/TSS/TSS_crt/

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#include <CkStringBuilderW.h>
#include <CkXmlDSigGenW.h>
#include <CkXmlW.h>
#include <CkCertW.h>
#include <CkJsonObjectW.h>
#include <CkHttpW.h>

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

    bool success = true;

    // Load the XML to be signed.  For example, the XML to be signed might contain something like this:

    // <?xml version="1.0" encoding="utf-8"?>
    // <TransakcniLogSystemu xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://nsess.public.cz/erms_trans/v_01_01" Id="Signature1">
    //   <TransLogInfo>
    //     <Identifikator>XYZ ABC</Identifikator>
    //     <DatumVzniku>2022-12-20T14:39:02.3625922+01:00</DatumVzniku>
    //     <DatumCasOd>2022-12-20T14:26:26.88</DatumCasOd>
    //     <DatumCasDo>2022-12-20T14:39:02.287</DatumCasDo>
    //     <Software>XYZ</Software>
    //     <VerzeSoftware>2.0.19.32</VerzeSoftware>
    //   </TransLogInfo>
    //   <Udalosti>
    //     <Udalost>
    //       <Poradi>1</Poradi>
    // ...

    // Load the XML to be signed from a file.
    // (XML can be loaded from other source, such as a string variable.)
    CkStringBuilderW sbXml;
    success = sbXml.LoadFile(L"xmlToSign.xml",L"utf-8");

    CkXmlDSigGenW gen;

    gen.put_SigLocation(L"TransakcniLogSystemu");
    gen.put_SigLocationMod(0);
    gen.put_SigId(L"SignatureID-Signature1");
    gen.put_SigNamespacePrefix(L"ds");
    gen.put_SigNamespaceUri(L"http://www.w3.org/2000/09/xmldsig#");
    gen.put_SignedInfoCanonAlg(L"C14N");
    gen.put_SignedInfoDigestMethod(L"sha256");

    // Set the KeyInfoId before adding references..
    gen.put_KeyInfoId(L"KeyInfoId-Signature-Signature1");

    // Create an Object to be added to the Signature.

    // Note: Chilkat will automatically fill in the values marked as "TO BE GENERATED BY CHILKAT" at the time of signing.
    // The EncapsulatedTimestamp will be automatically generated.

    CkXmlW object1;
    object1.put_Tag(L"xades:QualifyingProperties");
    object1.AddAttribute(L"Target",L"#Signature1");

    object1.UpdateAttrAt(L"xades:SignedProperties",true,L"Id",L"SignedProperties-Signature-Signature1");
    object1.UpdateChildContent(L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime",L"TO BE GENERATED BY CHILKAT");
    object1.UpdateAttrAt(L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestMethod",true,L"Algorithm",L"http://www.w3.org/2001/04/xmlenc#sha256");
    object1.UpdateChildContent(L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT");
    object1.UpdateChildContent(L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509IssuerName",L"TO BE GENERATED BY CHILKAT");
    object1.UpdateChildContent(L"xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificate|xades:Cert|xades:IssuerSerial|ds:X509SerialNumber",L"TO BE GENERATED BY CHILKAT");

    // The EncapsulatedTimestamp will be included in the unsigned properties.
    object1.UpdateAttrAt(L"xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp",true,L"Id",L"signature-timestamp-5561-8212-3316-5191");
    object1.UpdateAttrAt(L"xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|ds:CanonicalizationMethod",true,L"Algorithm",L"http://www.w3.org/2001/10/xml-exc-c14n#");
    object1.UpdateAttrAt(L"xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",true,L"Encoding",L"http://uri.etsi.org/01903/v1.2.2#DER");
    object1.UpdateChildContent(L"xades:UnsignedProperties|xades:UnsignedSignatureProperties|xades:SignatureTimeStamp|xades:EncapsulatedTimeStamp",L"TO BE GENERATED BY CHILKAT");

    gen.AddObject(L"XadesObjectId-Signature1",object1.getXml(),L"",L"");

    // -------- Reference 1 --------
    gen.AddObjectRef(L"SignedProperties-Signature-Signature1",L"sha256",L"EXCL_C14N",L"",L"http://uri.etsi.org/01903#SignedProperties");

    // -------- Reference 2 --------
    gen.AddSameDocRef(L"KeyInfoId-Signature-Signature1",L"sha256",L"EXCL_C14N",L"",L"");
    gen.SetRefIdAttr(L"KeyInfoId-Signature-Signature1",L"ReferenceKeyInfo");

    // -------- Reference 3 --------
    gen.AddSameDocRef(L"",L"sha256",L"EXCL_C14N",L"",L"");
    gen.SetRefIdAttr(L"",L"Reference-Signature1");

    // Provide a certificate + private key. (PFX password is test123)
    CkCertW cert;
    success = cert.LoadPfxFile(L"qa_data/pfx/cert_test123.pfx",L"test123");
    if (success != true) {
        wprintf(L"%s\n",cert.lastErrorText());
        return;
    }

    gen.SetX509Cert(cert,true);

    gen.put_KeyInfoType(L"X509Data");
    gen.put_X509Type(L"Certificate");

    gen.put_Behaviors(L"IndentedSignature");

    // -------------------------------------------------------------------------------------------
    // To have the EncapsulatedTimeStamp automatically added... 
    // 1) Add the <xades:EncapsulatedTimeStamp Encoding="http://uri.etsi.org/01903/v1.2.2#DER">TO BE GENERATED BY CHILKAT</xades:EncapsulatedTimeStamp>
    //    to the unsigned properties.  (This was accomplished in the above code.)
    // 2) Specify the TSA URL (Timestamping Authority URL).
    //    Here we specify the TSA URL:
    // -------------------------------------------------------------------------------------------

    CkJsonObjectW jsonTsa;
    jsonTsa.UpdateString(L"timestampToken.tsaUrl",L"https://www3.postsignum.cz/TSS/TSS_crt/");
    jsonTsa.UpdateBool(L"timestampToken.requestTsaCert",true);
    gen.SetTsa(jsonTsa);

    // -------------------------------------------------------------------------------------------
    // In this case, the TSA requires client certificate authentication.
    // To provide your client certificate, the application will instantiate a Chilkat HTTP object,
    // then set it up with a SSL/TLS client certificate, and then tell the XmlDSigGen object
    // to use the HTTP object for connections to the TSA server.
    // -------------------------------------------------------------------------------------------
    CkHttpW http;
    success = http.SetSslClientCertPfx(L"/home/bob/pfxFiles/myClientSideCertWithPrivateKey.pfx",L"pfxPassword");
    if (success != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // Tell the XmlDSigGen object to use the above HTTP object for TSA communications.
    gen.SetHttpObj(http);

    // Sign the XML...
    success = gen.CreateXmlDSigSb(sbXml);
    if (success != true) {
        wprintf(L"%s\n",gen.lastErrorText());
        return;
    }

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

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

    wprintf(L"%s\n",sbXml.getAsString());
    }

 

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