Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package gui.configurar; import java.io.File; import java.io.FileInputStream; import java.security.KeyStore; import java.security.PrivateKey; import java.security.Signature; import java.util.ArrayList; import java.util.Enumeration; import jpkj.Msg; import jpkj.Util; import jpkj.UtilFile; import org.apache.commons.codec.binary.Base64; /** * * @author felipe */ public class GerarAssinatura extends javax.swing.JFrame { java.io.File certificado = null; String assinar() { String senha = tSenha.getText(); String c = tContribuinte.getText() + tDev.getText(); if (certificado == null) { Msg.show("Escolha o certificado"); return ""; } try { KeyStore keystore = KeyStore.getInstance("PKCS12"); keystore.load(new FileInputStream(certificado), senha.toCharArray()); ArrayList<String> apelidos = new ArrayList<String>(); Enumeration<String> aliases = keystore.aliases(); while (aliases.hasMoreElements()) { apelidos.add(aliases.nextElement()); } PrivateKey key = (PrivateKey) keystore.getKey(apelidos.get(0), senha.toCharArray()); Signature assinatura = Signature.getInstance("SHA256withRSA"); assinatura.initSign(key); byte[] bytes = c.getBytes(); assinatura.update(bytes); byte[] assinado = assinatura.sign(); String strAssinado = Base64.encodeBase64String(assinado); return strAssinado; } catch (Exception e) { e.printStackTrace(); } return ""; } /** * Creates new form GerarAssinatura */ public GerarAssinatura() { initComponents(); certificado = null; } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { jScrollPane1 = new javax.swing.JScrollPane(); jTextArea1 = new javax.swing.JTextArea(); jLabel1 = new javax.swing.JLabel(); jTextField1 = new javax.swing.JTextField(); jButton1 = new javax.swing.JButton(); jLabel2 = new javax.swing.JLabel(); tSenha = new javax.swing.JTextField(); jLabel3 = new javax.swing.JLabel(); tContribuinte = new javax.swing.JTextField(); tDev = new javax.swing.JTextField(); jLabel4 = new javax.swing.JLabel(); jButton2 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jTextArea1.setColumns(20); jTextArea1.setRows(5); jScrollPane1.setViewportView(jTextArea1); jLabel1.setText("Certificado"); jTextField1.setEditable(false); jButton1.setText("Selecionar"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); jLabel2.setText("Senha"); jLabel3.setText("CNPJ Contribuinte"); jLabel4.setText("CNPJ Desenvolvedor"); jButton2.setText("Gerar Assinatura Digital"); jButton2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton2ActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addGap(0, 0, Short.MAX_VALUE).addComponent(jButton2) .addGap(12, 12, 12)) .addGroup(layout.createSequentialGroup().addContainerGap().addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel3).addComponent(jLabel4)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(layout .createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addComponent(tDev).addComponent(tContribuinte))) .addGroup(layout.createSequentialGroup().addComponent(jLabel1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 108, Short.MAX_VALUE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jButton1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jLabel2) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(tSenha, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap()) .addGroup(layout.createSequentialGroup().addComponent(jScrollPane1).addGap(12, 12, 12))))); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup( javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addContainerGap().addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jLabel1) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent(jButton1).addComponent(jLabel2).addComponent(tSenha, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel3).addComponent(tContribuinte, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel4).addComponent(tDev, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton2) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 155, Short.MAX_VALUE) .addContainerGap())); pack(); }// </editor-fold>//GEN-END:initComponents private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed jTextArea1.setText(assinar()); }//GEN-LAST:event_jButton2ActionPerformed private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed certificado = UtilFile.selectFile("", new String[] { "pfx" }, "Certificado A1"); if (certificado != null) { jTextField1.setText(certificado.getPath()); } }//GEN-LAST:event_jButton1ActionPerformed /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(GerarAssinatura.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(GerarAssinatura.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(GerarAssinatura.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(GerarAssinatura.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new GerarAssinatura().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JTextArea jTextArea1; private javax.swing.JTextField jTextField1; private javax.swing.JTextField tContribuinte; private javax.swing.JTextField tDev; private javax.swing.JTextField tSenha; // End of variables declaration//GEN-END:variables }