C
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evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.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.
Chilkat C Downloads
#include <C_CkXml.h>
#include <C_CkXmlDSigGen.h>
#include <C_CkCert.h>
#include <C_CkJsonObject.h>
#include <C_CkStringBuilder.h>
#include <C_CkXmlDSig.h>
void ChilkatSample(void)
{
BOOL success;
HCkXml xmlToSign;
HCkXmlDSigGen gen;
HCkXml object1;
HCkXml object2;
HCkCert cert;
HCkJsonObject jsonTsa;
HCkStringBuilder sbXml;
HCkXmlDSig verifier;
int numSigs;
int verifyIdx;
BOOL verified;
success = FALSE;
// 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 = CkXml_Create();
CkXml_putTag(xmlToSign,"es:Dossier");
CkXml_AddAttribute(xmlToSign,"xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
CkXml_AddAttribute(xmlToSign,"xmlns:ds","http://www.w3.org/2000/09/xmldsig#");
CkXml_AddAttribute(xmlToSign,"xmlns","http://uri.etsi.org/01903/v1.3.2#");
CkXml_AddAttribute(xmlToSign,"xmlns:es","https://www.microsec.hu/ds/e-szigno30#");
CkXml_AddAttribute(xmlToSign,"xsi:schemaLocation","https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd");
CkXml_UpdateAttrAt(xmlToSign,"es:DossierProfile",TRUE,"Id","PObject0");
CkXml_UpdateAttrAt(xmlToSign,"es:DossierProfile",TRUE,"OBJREF","Object0");
CkXml_UpdateChildContent(xmlToSign,"es:DossierProfile|es:Title","e-akta.es3");
CkXml_UpdateChildContent(xmlToSign,"es:DossierProfile|es:E-category","electronic dossier");
CkXml_UpdateChildContent(xmlToSign,"es:DossierProfile|es:CreationDate","2022-12-02T07:55:16Z");
CkXml_UpdateAttrAt(xmlToSign,"es:Documents",TRUE,"Id","Object0");
gen = CkXmlDSigGen_Create();
CkXmlDSigGen_putSigLocation(gen,"es:Dossier");
CkXmlDSigGen_putSigLocationMod(gen,0);
CkXmlDSigGen_putSigId(gen,"S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXmlDSigGen_putSigValueId(gen,"VS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXmlDSigGen_putSignedInfoId(gen,"SIS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXmlDSigGen_putSignedInfoCanonAlg(gen,"EXCL_C14N");
CkXmlDSigGen_putSignedInfoDigestMethod(gen,"sha256");
// Set the KeyInfoId before adding references..
CkXmlDSigGen_putKeyInfoId(gen,"KS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
// Create an Object to be added to the Signature.
object1 = CkXml_Create();
CkXml_putTag(object1,"es:SignatureProfile");
CkXml_AddAttribute(object1,"Id","PS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_AddAttribute(object1,"OBJREF","Object0");
CkXml_AddAttribute(object1,"SIGREF","S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_AddAttribute(object1,"SIGREFLIST","#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_UpdateChildContent(object1,"es:SignerName","EC Minősített-Tesztelő Péterke");
CkXml_UpdateChildContent(object1,"es:SDPresented","false");
CkXml_UpdateChildContent(object1,"es:Type","signature");
CkXml_UpdateAttrAt(object1,"es:Generator|es:Program",TRUE,"name","e-Szigno");
CkXml_UpdateAttrAt(object1,"es:Generator|es:Program",TRUE,"version","3.3.6.8");
CkXml_UpdateAttrAt(object1,"es:Generator|es:Device",TRUE,"name","OpenSSL 1.1.1n 15 Mar 2022");
CkXml_UpdateAttrAt(object1,"es:Generator|es:Device",TRUE,"type","");
CkXmlDSigGen_AddObject(gen,"O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",CkXml_getXml(object1),"","");
// Create an Object to be added to the Signature.
object2 = CkXml_Create();
CkXml_putTag(object2,"QualifyingProperties");
CkXml_AddAttribute(object2,"Target","#S9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_AddAttribute(object2,"Id","QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_UpdateAttrAt(object2,"SignedProperties",TRUE,"Id","XS9fe8096e-2cac-415d-9222-f6cf2ecb314b");
CkXml_UpdateChildContent(object2,"SignedProperties|SignedSignatureProperties|SigningTime","TO BE GENERATED BY CHILKAT");
CkXml_UpdateAttrAt(object2,"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",TRUE,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256");
CkXml_UpdateChildContent(object2,"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT");
CkXml_UpdateChildContent(object2,"SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|IssuerSerialV2","TO BE GENERATED BY CHILKAT");
CkXml_UpdateChildContent(object2,"SignedProperties|SignedSignatureProperties|SignaturePolicyIdentifier|SignaturePolicyImplied","");
CkXml_UpdateChildContent(object2,"SignedProperties|SignedSignatureProperties|SignerRoleV2|ClaimedRoles|ClaimedRole","tesztelő");
// Here we have the EncapsulatedTimestamp found in the unsigned signature properties.
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",TRUE,"Id","T72cb4961-4326-4319-857a-7cf55e7ef899");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",TRUE,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",TRUE,"Id","ET72cb4961-4326-4319-857a-7cf55e7ef899");
CkXml_UpdateChildContent(object2,"UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",TRUE,"xmlns","http://uri.etsi.org/01903/v1.4.1#");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|CertificateValues",TRUE,"Id","CV18c7702d-d45b-44bc-853a-a720f41053cd");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",TRUE,"Id","EC42db04c8-1422-407b-8c42-189353a55268");
CkXml_UpdateChildContent(object2,"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate","BASE64_CONTENT");
CkXml_UpdateAttrAt(object2,"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",TRUE,"Id","EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3");
CkXml_UpdateChildContent(object2,"UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]","BASE64_CONTENT");
CkXmlDSigGen_AddObject(gen,"O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",CkXml_getXml(object2),"","");
// -------- Reference 1 --------
CkXmlDSigGen_AddSameDocRef(gen,"Object0","sha256","EXCL_C14N","","");
CkXmlDSigGen_SetRefIdAttr(gen,"Object0","Re1f816c4-7898-4544-9b41-f4156dc0c528");
// -------- Reference 2 --------
CkXmlDSigGen_AddObjectRef(gen,"PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","");
CkXmlDSigGen_SetRefIdAttr(gen,"PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra873b616-e568-4c38-ae94-27fbff67cc43");
// -------- Reference 3 --------
CkXmlDSigGen_AddSameDocRef(gen,"PObject0","sha256","EXCL_C14N","","");
CkXmlDSigGen_SetRefIdAttr(gen,"PObject0","Ra5d85948-5d6a-4914-8c32-242f5d6d9e81");
// -------- Reference 4 --------
CkXmlDSigGen_AddObjectRef(gen,"XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties");
CkXmlDSigGen_SetRefIdAttr(gen,"XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra7412a43-dc05-4e0a-ac84-e9a070214757");
// Provide a certificate + private key. (PFX password is test123)
cert = CkCert_Create();
success = CkCert_LoadPfxFile(cert,"qa_data/pfx/cert_test123.pfx","test123");
if (success != TRUE) {
printf("%s\n",CkCert_lastErrorText(cert));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkXml_Dispose(object2);
CkCert_Dispose(cert);
return;
}
CkXmlDSigGen_SetX509Cert(gen,cert,TRUE);
CkXmlDSigGen_putKeyInfoType(gen,"X509Data");
CkXmlDSigGen_putX509Type(gen,"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 = CkJsonObject_Create();
CkJsonObject_UpdateString(jsonTsa,"timestampToken.tsaUrl","http://timestamp.digicert.com");
CkJsonObject_UpdateBool(jsonTsa,"timestampToken.requestTsaCert",TRUE);
CkXmlDSigGen_SetTsa(gen,jsonTsa);
// Load XML to be signed...
sbXml = CkStringBuilder_Create();
CkXml_GetXmlSb(xmlToSign,sbXml);
CkXmlDSigGen_putBehaviors(gen,"IndentedSignature,OmitAlreadyDefinedSigNamespace");
// Sign the XML...
success = CkXmlDSigGen_CreateXmlDSigSb(gen,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSigGen_lastErrorText(gen));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkXml_Dispose(object2);
CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonTsa);
CkStringBuilder_Dispose(sbXml);
return;
}
// -----------------------------------------------
// Save the signed XML to a file.
success = CkStringBuilder_WriteFile(sbXml,"c:/temp/qa_output/signedXml.xml","utf-8",FALSE);
printf("%s\n",CkStringBuilder_getAsString(sbXml));
// ----------------------------------------
// Verify the signatures we just produced...
verifier = CkXmlDSig_Create();
success = CkXmlDSig_LoadSignatureSb(verifier,sbXml);
if (success != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkXml_Dispose(object2);
CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonTsa);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
return;
}
numSigs = CkXmlDSig_getNumSignatures(verifier);
verifyIdx = 0;
while (verifyIdx < numSigs) {
CkXmlDSig_putSelector(verifier,verifyIdx);
verified = CkXmlDSig_VerifySignature(verifier,TRUE);
if (verified != TRUE) {
printf("%s\n",CkXmlDSig_lastErrorText(verifier));
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkXml_Dispose(object2);
CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonTsa);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
return;
}
verifyIdx = verifyIdx + 1;
}
printf("All signatures were successfully verified.\n");
CkXml_Dispose(xmlToSign);
CkXmlDSigGen_Dispose(gen);
CkXml_Dispose(object1);
CkXml_Dispose(object2);
CkCert_Dispose(cert);
CkJsonObject_Dispose(jsonTsa);
CkStringBuilder_Dispose(sbXml);
CkXmlDSig_Dispose(verifier);
}