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(Android™) PKCS11 Sign PDF using Certificate and Private Key on Smart Card / USB TokenSee more PKCS11 ExamplesSample code showing how to use PKCS11 to sign a PDF with a certificate and private key stored on a smart card or USB token. Note: This example requires Chilkat v9.5.0.96 or 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. // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems. CkPkcs11 pkcs11 = new CkPkcs11(); pkcs11.put_SharedLibPath("C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"); String pin = "0000"; int userType = 1; // Establish a PKCS11 logged-on session using the driver (.so, .dylib, or .dll) as specified in the SharedLibPath above. boolean success = pkcs11.QuickSession(userType,pin); if (success == false) { Log.i(TAG, pkcs11.lastErrorText()); return; } // Get the certificate (on the smart card) that has a private key. // There are other ways to locate a certificate on the HSM. // This example assumes there is a single certificate w/ private key. CkCert cert = new CkCert(); success = pkcs11.FindCert("privateKey","",cert); if (success == true) { Log.i(TAG, "Cert with private key: " + cert.subjectCN()); } else { Log.i(TAG, "No certificates having a private key were found."); success = pkcs11.CloseSession(); return; } // -------------------------------------------------------------------------- // At this point, we have the cert to be used for signing. // Our PDF signing code is the same as for a cert obtained from any other source.. CkPdf pdf = new CkPdf(); // Load a PDF to be signed. success = pdf.LoadFile("qa_data/pdf/hello.pdf"); if (success == false) { Log.i(TAG, pdf.lastErrorText()); success = pkcs11.CloseSession(); return; } CkJsonObject json = new CkJsonObject(); json.UpdateInt("page",1); json.UpdateString("appearance.y","top"); json.UpdateString("appearance.x","left"); json.UpdateString("appearance.fontScale","10.0"); json.UpdateString("signingAlgorithm","pss"); json.UpdateString("hashAlgorithm","sha256"); int i = 0; json.put_I(i); json.UpdateString("appearance.text[i]","Digitaly signed by: Xyz Widgets, Inc."); i = i + 1; json.put_I(i); json.UpdateString("appearance.text[i]","current_dt"); i = i + 1; json.put_I(i); json.UpdateString("appearance.text[i]","blah blah blah"); // The certificate is internally linked to the Pkcs11 object, which is currently in an authenticated session. success = pdf.SetSigningCert(cert); success = pdf.SignPdf(json,"qa_output/out.pdf"); if (success == false) { Log.i(TAG, pdf.lastErrorText()); success = pkcs11.CloseSession(); return; } // -------------------------------------------------------------------------- // Revert to an unauthenticated session by calling Logout. success = pkcs11.Logout(); if (success == false) { Log.i(TAG, pkcs11.lastErrorText()); success = pkcs11.CloseSession(); return; } // When finished, close the session. // It is important to close the session (memory leaks will occur if the session is not properly closed). success = pkcs11.CloseSession(); if (success == false) { Log.i(TAG, pkcs11.lastErrorText()); return; } Log.i(TAG, "Success."); } 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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