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Unicode C Examples

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(Unicode C) Create XAdES-T Signed XML

See more XAdES Examples

This example signs XML using the XAdES-T profile. XAdES-T is a profile within the XAdES standard that adds support for secure timestamping of signatures.

Secure timestamping involves adding a timestamp to the signature, indicating the exact time when the signature was applied.

Timestamping enhances the long-term validity of signatures by providing evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.

XAdES-T signatures include elements for embedding timestamp data within the XML signature, along with information about the timestamp authority and the timestamp verification process.

XAdES-T signatures are suitable for scenarios where long-term validity and integrity of signatures are essential, such as in legal and regulatory contexts where archived documents may need to be validated years or decades later.

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#include <C_CkXmlW.h>
#include <C_CkXmlDSigGenW.h>
#include <C_CkCertW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkXmlDSigW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkXmlW xmlToSign;
    HCkXmlDSigGenW gen;
    HCkXmlW object1;
    HCkXmlW object2;
    HCkCertW cert;
    HCkJsonObjectW jsonTsa;
    HCkStringBuilderW sbXml;
    HCkXmlDSigW verifier;
    int numSigs;
    int verifyIdx;
    BOOL verified;

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

    success = TRUE;
    // Create the XML to be signed...

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

    // <?xml version="1.0" encoding="UTF-8"?>
    // <es:Dossier xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns="http://uri.etsi.org/01903/v1.3.2#" xmlns:es="https://www.microsec.hu/ds/e-szigno30#" xsi:schemaLocation="https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd">
    // 	<es:DossierProfile Id="PObject0" OBJREF="Object0">
    // 	<es:Title>e-akta.es3</es:Title>
    // 	<es:E-category>electronic dossier</es:E-category>
    // 	<es:CreationDate>2022-12-02T07:55:16Z</es:CreationDate>
    // 	</es:DossierProfile>
    // 	<es:Documents Id="Object0"/>
    // </es:Dossier>

    xmlToSign = CkXmlW_Create();
    CkXmlW_putTag(xmlToSign,L"es:Dossier");
    CkXmlW_AddAttribute(xmlToSign,L"xmlns:xsi",L"http://www.w3.org/2001/XMLSchema-instance");
    CkXmlW_AddAttribute(xmlToSign,L"xmlns:ds",L"http://www.w3.org/2000/09/xmldsig#");
    CkXmlW_AddAttribute(xmlToSign,L"xmlns",L"http://uri.etsi.org/01903/v1.3.2#");
    CkXmlW_AddAttribute(xmlToSign,L"xmlns:es",L"https://www.microsec.hu/ds/e-szigno30#");
    CkXmlW_AddAttribute(xmlToSign,L"xsi:schemaLocation",L"https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd");
    CkXmlW_UpdateAttrAt(xmlToSign,L"es:DossierProfile",TRUE,L"Id",L"PObject0");
    CkXmlW_UpdateAttrAt(xmlToSign,L"es:DossierProfile",TRUE,L"OBJREF",L"Object0");
    CkXmlW_UpdateChildContent(xmlToSign,L"es:DossierProfile|es:Title",L"e-akta.es3");
    CkXmlW_UpdateChildContent(xmlToSign,L"es:DossierProfile|es:E-category",L"electronic dossier");
    CkXmlW_UpdateChildContent(xmlToSign,L"es:DossierProfile|es:CreationDate",L"2022-12-02T07:55:16Z");
    CkXmlW_UpdateAttrAt(xmlToSign,L"es:Documents",TRUE,L"Id",L"Object0");

    gen = CkXmlDSigGenW_Create();

    CkXmlDSigGenW_putSigLocation(gen,L"es:Dossier");
    CkXmlDSigGenW_putSigLocationMod(gen,0);
    CkXmlDSigGenW_putSigId(gen,L"S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlDSigGenW_putSigValueId(gen,L"VS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlDSigGenW_putSignedInfoId(gen,L"SIS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlDSigGenW_putSignedInfoCanonAlg(gen,L"EXCL_C14N");
    CkXmlDSigGenW_putSignedInfoDigestMethod(gen,L"sha256");

    // Set the KeyInfoId before adding references..
    CkXmlDSigGenW_putKeyInfoId(gen,L"KS9fe8096e-2cac-415d-9222-f6cf2ecb314b");

    // Create an Object to be added to the Signature.
    object1 = CkXmlW_Create();
    CkXmlW_putTag(object1,L"es:SignatureProfile");
    CkXmlW_AddAttribute(object1,L"Id",L"PS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_AddAttribute(object1,L"OBJREF",L"Object0");
    CkXmlW_AddAttribute(object1,L"SIGREF",L"S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_AddAttribute(object1,L"SIGREFLIST",L"#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_UpdateChildContent(object1,L"es:SignerName",L"EC Minsített-Tesztel Péterke");
    CkXmlW_UpdateChildContent(object1,L"es:SDPresented",L"false");
    CkXmlW_UpdateChildContent(object1,L"es:Type",L"signature");
    CkXmlW_UpdateAttrAt(object1,L"es:Generator|es:Program",TRUE,L"name",L"e-Szigno");
    CkXmlW_UpdateAttrAt(object1,L"es:Generator|es:Program",TRUE,L"version",L"3.3.6.8");
    CkXmlW_UpdateAttrAt(object1,L"es:Generator|es:Device",TRUE,L"name",L"OpenSSL 1.1.1n  15 Mar 2022");
    CkXmlW_UpdateAttrAt(object1,L"es:Generator|es:Device",TRUE,L"type",L"");

    CkXmlDSigGenW_AddObject(gen,L"O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",CkXmlW_getXml(object1),L"",L"");

    // Create an Object to be added to the Signature.
    object2 = CkXmlW_Create();
    CkXmlW_putTag(object2,L"QualifyingProperties");
    CkXmlW_AddAttribute(object2,L"Target",L"#S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_AddAttribute(object2,L"Id",L"QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_UpdateAttrAt(object2,L"SignedProperties",TRUE,L"Id",L"XS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
    CkXmlW_UpdateChildContent(object2,L"SignedProperties|SignedSignatureProperties|SigningTime",L"TO BE GENERATED BY CHILKAT");
    CkXmlW_UpdateAttrAt(object2,L"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",TRUE,L"Algorithm",L"http://www.w3.org/2001/04/xmlenc#sha256");
    CkXmlW_UpdateChildContent(object2,L"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestValue",L"TO BE GENERATED BY CHILKAT");
    CkXmlW_UpdateChildContent(object2,L"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|IssuerSerialV2",L"TO BE GENERATED BY CHILKAT");
    CkXmlW_UpdateChildContent(object2,L"SignedProperties|SignedSignatureProperties|SignaturePolicyIdentifier|SignaturePolicyImplied",L"");
    CkXmlW_UpdateChildContent(object2,L"SignedProperties|SignedSignatureProperties|SignerRoleV2|ClaimedRoles|ClaimedRole",L"tesztel");

    // Here we have the EncapsulatedTimestamp found in the unsigned signature properties.
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",TRUE,L"Id",L"T72cb4961-4326-4319-857a-7cf55e7ef899");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",TRUE,L"Algorithm",L"http://www.w3.org/2001/10/xml-exc-c14n#");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",TRUE,L"Id",L"ET72cb4961-4326-4319-857a-7cf55e7ef899");
    CkXmlW_UpdateChildContent(object2,L"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",L"TO BE GENERATED BY CHILKAT");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",TRUE,L"xmlns",L"http://uri.etsi.org/01903/v1.4.1#");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|CertificateValues",TRUE,L"Id",L"CV18c7702d-d45b-44bc-853a-a720f41053cd");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",TRUE,L"Id",L"EC42db04c8-1422-407b-8c42-189353a55268");
    CkXmlW_UpdateChildContent(object2,L"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",L"BASE64_CONTENT");
    CkXmlW_UpdateAttrAt(object2,L"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",TRUE,L"Id",L"EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3");
    CkXmlW_UpdateChildContent(object2,L"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",L"BASE64_CONTENT");

    CkXmlDSigGenW_AddObject(gen,L"O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",CkXmlW_getXml(object2),L"",L"");

    // -------- Reference 1 --------
    CkXmlDSigGenW_AddSameDocRef(gen,L"Object0",L"sha256",L"EXCL_C14N",L"",L"");
    CkXmlDSigGenW_SetRefIdAttr(gen,L"Object0",L"Re1f816c4-7898-4544-9b41-f4156dc0c528");

    // -------- Reference 2 --------
    CkXmlDSigGenW_AddObjectRef(gen,L"PS9fe8096e-2cac-415d-9222-f6cf2ecb314b",L"sha256",L"EXCL_C14N",L"",L"");
    CkXmlDSigGenW_SetRefIdAttr(gen,L"PS9fe8096e-2cac-415d-9222-f6cf2ecb314b",L"Ra873b616-e568-4c38-ae94-27fbff67cc43");

    // -------- Reference 3 --------
    CkXmlDSigGenW_AddSameDocRef(gen,L"PObject0",L"sha256",L"EXCL_C14N",L"",L"");
    CkXmlDSigGenW_SetRefIdAttr(gen,L"PObject0",L"Ra5d85948-5d6a-4914-8c32-242f5d6d9e81");

    // -------- Reference 4 --------
    CkXmlDSigGenW_AddObjectRef(gen,L"XS9fe8096e-2cac-415d-9222-f6cf2ecb314b",L"sha256",L"EXCL_C14N",L"",L"http://uri.etsi.org/01903#SignedProperties");
    CkXmlDSigGenW_SetRefIdAttr(gen,L"XS9fe8096e-2cac-415d-9222-f6cf2ecb314b",L"Ra7412a43-dc05-4e0a-ac84-e9a070214757");

    // Provide a certificate + private key. (PFX password is test123)
    cert = CkCertW_Create();
    success = CkCertW_LoadPfxFile(cert,L"qa_data/pfx/cert_test123.pfx",L"test123");
    if (success != TRUE) {
        wprintf(L"%s\n",CkCertW_lastErrorText(cert));
        CkXmlW_Dispose(xmlToSign);
        CkXmlDSigGenW_Dispose(gen);
        CkXmlW_Dispose(object1);
        CkXmlW_Dispose(object2);
        CkCertW_Dispose(cert);
        return;
    }

    CkXmlDSigGenW_SetX509Cert(gen,cert,TRUE);

    CkXmlDSigGenW_putKeyInfoType(gen,L"X509Data");
    CkXmlDSigGenW_putX509Type(gen,L"Certificate");

    // -------------------------------------------------------------------------------------------
    // To have the EncapsulatedTimeStamp automatically added, we only need to do 2 things.
    // 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.
    // 2) Specify the TSA URL (Timestamping Authority URL).
    //    Here we specify the TSA URL:
    // -------------------------------------------------------------------------------------------

    jsonTsa = CkJsonObjectW_Create();
    CkJsonObjectW_UpdateString(jsonTsa,L"timestampToken.tsaUrl",L"http://timestamp.digicert.com");
    CkJsonObjectW_UpdateBool(jsonTsa,L"timestampToken.requestTsaCert",TRUE);
    CkXmlDSigGenW_SetTsa(gen,jsonTsa);

    // Load XML to be signed...
    sbXml = CkStringBuilderW_Create();
    CkXmlW_GetXmlSb(xmlToSign,sbXml);

    CkXmlDSigGenW_putBehaviors(gen,L"IndentedSignature,OmitAlreadyDefinedSigNamespace");

    // Sign the XML...
    success = CkXmlDSigGenW_CreateXmlDSigSb(gen,sbXml);
    if (success != TRUE) {
        wprintf(L"%s\n",CkXmlDSigGenW_lastErrorText(gen));
        CkXmlW_Dispose(xmlToSign);
        CkXmlDSigGenW_Dispose(gen);
        CkXmlW_Dispose(object1);
        CkXmlW_Dispose(object2);
        CkCertW_Dispose(cert);
        CkJsonObjectW_Dispose(jsonTsa);
        CkStringBuilderW_Dispose(sbXml);
        return;
    }

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

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

    wprintf(L"%s\n",CkStringBuilderW_getAsString(sbXml));

    // ----------------------------------------
    // Verify the signatures we just produced...
    verifier = CkXmlDSigW_Create();
    success = CkXmlDSigW_LoadSignatureSb(verifier,sbXml);
    if (success != TRUE) {
        wprintf(L"%s\n",CkXmlDSigW_lastErrorText(verifier));
        CkXmlW_Dispose(xmlToSign);
        CkXmlDSigGenW_Dispose(gen);
        CkXmlW_Dispose(object1);
        CkXmlW_Dispose(object2);
        CkCertW_Dispose(cert);
        CkJsonObjectW_Dispose(jsonTsa);
        CkStringBuilderW_Dispose(sbXml);
        CkXmlDSigW_Dispose(verifier);
        return;
    }

    numSigs = CkXmlDSigW_getNumSignatures(verifier);
    verifyIdx = 0;
    while (verifyIdx < numSigs) {
        CkXmlDSigW_putSelector(verifier,verifyIdx);
        verified = CkXmlDSigW_VerifySignature(verifier,TRUE);
        if (verified != TRUE) {
            wprintf(L"%s\n",CkXmlDSigW_lastErrorText(verifier));
            CkXmlW_Dispose(xmlToSign);
            CkXmlDSigGenW_Dispose(gen);
            CkXmlW_Dispose(object1);
            CkXmlW_Dispose(object2);
            CkCertW_Dispose(cert);
            CkJsonObjectW_Dispose(jsonTsa);
            CkStringBuilderW_Dispose(sbXml);
            CkXmlDSigW_Dispose(verifier);
            return;
        }

        verifyIdx = verifyIdx + 1;
    }

    wprintf(L"All signatures were successfully verified.\n");


    CkXmlW_Dispose(xmlToSign);
    CkXmlDSigGenW_Dispose(gen);
    CkXmlW_Dispose(object1);
    CkXmlW_Dispose(object2);
    CkCertW_Dispose(cert);
    CkJsonObjectW_Dispose(jsonTsa);
    CkStringBuilderW_Dispose(sbXml);
    CkXmlDSigW_Dispose(verifier);

    }
 

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