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(Android™) Create XAdES-T Signed XMLSee more XAdES ExamplesThis 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evidence that the signature existed at a specific point in time, even if the signer's certificate has expired or been revoked.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.
// Important: Don't forget to include the call to System.loadLibrary // as shown at the bottom of this code sample. package com.test; import android.app.Activity; import com.chilkatsoft.*; import android.widget.TextView; import android.os.Bundle; public class SimpleActivity extends Activity { private static final String TAG = "Chilkat"; // Called when the activity is first created. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. boolean 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> CkXml xmlToSign = new CkXml(); xmlToSign.put_Tag("es:Dossier"); xmlToSign.AddAttribute("xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance"); xmlToSign.AddAttribute("xmlns:ds","http://www.w3.org/2000/09/xmldsig#"); xmlToSign.AddAttribute("xmlns","http://uri.etsi.org/01903/v1.3.2#"); xmlToSign.AddAttribute("xmlns:es","https://www.microsec.hu/ds/e-szigno30#"); xmlToSign.AddAttribute("xsi:schemaLocation","https://www.microsec.hu/ds/e-szigno30# https://www.microsec.hu/ds/e-szigno30.xsd"); xmlToSign.UpdateAttrAt("es:DossierProfile",true,"Id","PObject0"); xmlToSign.UpdateAttrAt("es:DossierProfile",true,"OBJREF","Object0"); xmlToSign.UpdateChildContent("es:DossierProfile|es:Title","e-akta.es3"); xmlToSign.UpdateChildContent("es:DossierProfile|es:E-category","electronic dossier"); xmlToSign.UpdateChildContent("es:DossierProfile|es:CreationDate","2022-12-02T07:55:16Z"); xmlToSign.UpdateAttrAt("es:Documents",true,"Id","Object0"); CkXmlDSigGen gen = new CkXmlDSigGen(); gen.put_SigLocation("es:Dossier"); gen.put_SigLocationMod(0); gen.put_SigId("S9fe8096e-2cac-415d-9222-f6cf2ecb314b"); gen.put_SigValueId("VS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); gen.put_SignedInfoId("SIS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); gen.put_SignedInfoCanonAlg("EXCL_C14N"); gen.put_SignedInfoDigestMethod("sha256"); // Set the KeyInfoId before adding references.. gen.put_KeyInfoId("KS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); // Create an Object to be added to the Signature. CkXml object1 = new CkXml(); object1.put_Tag("es:SignatureProfile"); object1.AddAttribute("Id","PS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object1.AddAttribute("OBJREF","Object0"); object1.AddAttribute("SIGREF","S9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object1.AddAttribute("SIGREFLIST","#Object0 #PS9fe8096e-2cac-415d-9222-f6cf2ecb314b #PObject0 #XS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object1.UpdateChildContent("es:SignerName","EC Minsített-Tesztel Péterke"); object1.UpdateChildContent("es:SDPresented","false"); object1.UpdateChildContent("es:Type","signature"); object1.UpdateAttrAt("es:Generator|es:Program",true,"name","e-Szigno"); object1.UpdateAttrAt("es:Generator|es:Program",true,"version","3.3.6.8"); object1.UpdateAttrAt("es:Generator|es:Device",true,"name","OpenSSL 1.1.1n 15 Mar 2022"); object1.UpdateAttrAt("es:Generator|es:Device",true,"type",""); gen.AddObject("O1S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object1.getXml(),"",""); // Create an Object to be added to the Signature. CkXml object2 = new CkXml(); object2.put_Tag("QualifyingProperties"); object2.AddAttribute("Target","#S9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object2.AddAttribute("Id","QPS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object2.UpdateAttrAt("SignedProperties",true,"Id","XS9fe8096e-2cac-415d-9222-f6cf2ecb314b"); object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningTime","TO BE GENERATED BY CHILKAT"); object2.UpdateAttrAt("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestMethod",true,"Algorithm","http://www.w3.org/2001/04/xmlenc#sha256"); object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT"); object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SigningCertificateV2|Cert|IssuerSerialV2","TO BE GENERATED BY CHILKAT"); object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignaturePolicyIdentifier|SignaturePolicyImplied",""); object2.UpdateChildContent("SignedProperties|SignedSignatureProperties|SignerRoleV2|ClaimedRoles|ClaimedRole","tesztel"); // Here we have the EncapsulatedTimestamp found in the unsigned signature properties. object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp",true,"Id","T72cb4961-4326-4319-857a-7cf55e7ef899"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|ds:CanonicalizationMethod",true,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp",true,"Id","ET72cb4961-4326-4319-857a-7cf55e7ef899"); object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|SignatureTimeStamp|EncapsulatedTimeStamp","TO BE GENERATED BY CHILKAT"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|TimeStampValidationData",true,"xmlns","http://uri.etsi.org/01903/v1.4.1#"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues",true,"Id","CV18c7702d-d45b-44bc-853a-a720f41053cd"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate",true,"Id","EC42db04c8-1422-407b-8c42-189353a55268"); object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate","BASE64_CONTENT"); object2.UpdateAttrAt("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]",true,"Id","EC04728b44-a32c-46c1-b9bb-85b1f6b3c7d3"); object2.UpdateChildContent("UnsignedProperties|UnsignedSignatureProperties|CertificateValues|EncapsulatedX509Certificate[1]","BASE64_CONTENT"); gen.AddObject("O2S9fe8096e-2cac-415d-9222-f6cf2ecb314b",object2.getXml(),"",""); // -------- Reference 1 -------- gen.AddSameDocRef("Object0","sha256","EXCL_C14N","",""); gen.SetRefIdAttr("Object0","Re1f816c4-7898-4544-9b41-f4156dc0c528"); // -------- Reference 2 -------- gen.AddObjectRef("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","",""); gen.SetRefIdAttr("PS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra873b616-e568-4c38-ae94-27fbff67cc43"); // -------- Reference 3 -------- gen.AddSameDocRef("PObject0","sha256","EXCL_C14N","",""); gen.SetRefIdAttr("PObject0","Ra5d85948-5d6a-4914-8c32-242f5d6d9e81"); // -------- Reference 4 -------- gen.AddObjectRef("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","sha256","EXCL_C14N","","http://uri.etsi.org/01903#SignedProperties"); gen.SetRefIdAttr("XS9fe8096e-2cac-415d-9222-f6cf2ecb314b","Ra7412a43-dc05-4e0a-ac84-e9a070214757"); // Provide a certificate + private key. (PFX password is test123) CkCert cert = new CkCert(); success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123"); if (success != true) { Log.i(TAG, cert.lastErrorText()); return; } gen.SetX509Cert(cert,true); gen.put_KeyInfoType("X509Data"); gen.put_X509Type("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: // ------------------------------------------------------------------------------------------- CkJsonObject jsonTsa = new CkJsonObject(); jsonTsa.UpdateString("timestampToken.tsaUrl","http://timestamp.digicert.com"); jsonTsa.UpdateBool("timestampToken.requestTsaCert",true); gen.SetTsa(jsonTsa); // Load XML to be signed... CkStringBuilder sbXml = new CkStringBuilder(); xmlToSign.GetXmlSb(sbXml); gen.put_Behaviors("IndentedSignature,OmitAlreadyDefinedSigNamespace"); // Sign the XML... success = gen.CreateXmlDSigSb(sbXml); if (success != true) { Log.i(TAG, gen.lastErrorText()); return; } // ----------------------------------------------- // Save the signed XML to a file. success = sbXml.WriteFile("c:/temp/qa_output/signedXml.xml","utf-8",false); Log.i(TAG, sbXml.getAsString()); // ---------------------------------------- // Verify the signatures we just produced... CkXmlDSig verifier = new CkXmlDSig(); success = verifier.LoadSignatureSb(sbXml); if (success != true) { Log.i(TAG, verifier.lastErrorText()); return; } int numSigs = verifier.get_NumSignatures(); int verifyIdx = 0; while (verifyIdx < numSigs) { verifier.put_Selector(verifyIdx); boolean verified = verifier.VerifySignature(true); if (verified != true) { Log.i(TAG, verifier.lastErrorText()); return; } verifyIdx = verifyIdx + 1; } Log.i(TAG, "All signatures were successfully verified."); } static { System.loadLibrary("chilkat"); // Note: If the incorrect library name is passed to System.loadLibrary, // then you will see the following error message at application startup: //"The application <your-application-name> has stopped unexpectedly. Please try again." } } |
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