hlencrsaface.java

RSA加密算法

                jMenuItem4ActionPerformed(evt);
            }
        });

        jMenu3.add(jMenuItem4);

        jMenuBar1.add(jMenu3);

        setJMenuBar(jMenuBar1);

        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-666)/2, (screenSize.height-563)/2, 666, 563);
    }//GEN-END:initComponents
    
    private void jMenuItem6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem6ActionPerformed
        stop=true;//停止加密
        jMenuItem6.setEnabled(false);
    }//GEN-LAST:event_jMenuItem6ActionPerformed
    
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        readFile=true;
        try{
            srcFileLoader();//打开明文文件
        } catch(Exception e){}
    }//GEN-LAST:event_jButton2ActionPerformed
    
    private void jRadioButtonMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButtonMenuItem2ActionPerformed
        try{
            UIManager.setLookAndFeel(str1);
            SwingUtilities.updateComponentTreeUI(this);
        } catch(Exception e ){}
    }//GEN-LAST:event_jRadioButtonMenuItem2ActionPerformed
    
    private void jRadioButtonMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jRadioButtonMenuItem1ActionPerformed
        try{
            UIManager.setLookAndFeel(str2);
            SwingUtilities.updateComponentTreeUI(this);
        } catch(Exception e ){}
    }//GEN-LAST:event_jRadioButtonMenuItem1ActionPerformed
    
    private void jMenuItem5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem5ActionPerformed
        save();// 保存明文
    }//GEN-LAST:event_jMenuItem5ActionPerformed
    
    private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem4ActionPerformed
        JOptionPane.showMessageDialog(HLEncRSAFace.this,"     HL-RAS加密软件\n版本 1.0  (运行环境：JDK1.5以上的版本)\n\n" +
                "开发成员：何泽荣、林喜鹏\n热诚欢迎您能对此软件提出宝贵意见!!!\n华南农业大学02级计算机1班\n(Email:[e-mail])",
                "关于",JOptionPane.INFORMATION_MESSAGE,new ImageIcon(""));
    }//GEN-LAST:event_jMenuItem4ActionPerformed
    
    private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem3ActionPerformed
        if(EncKey==true){//如果已产生密钥，则读取明文并加密
            EncFileTh=new EncFileThread();
            EncFileTh.start();//调用加密明文线程
            jButton3.setText("停止加密");
        } else{ JOptionPane.showMessageDialog(HLEncRSAFace.this,
                "你还没有读取公钥，请先读取公钥！",
                "Error",
                JOptionPane.ERROR_MESSAGE);
        }
    }//GEN-LAST:event_jMenuItem3ActionPerformed
    
    private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem2ActionPerformed
        System.exit(0);
        
    }//GEN-LAST:event_jMenuItem2ActionPerformed
    
    private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jMenuItem1ActionPerformed
        try{
            srcFileLoader();//打开明文文件
        } catch(Exception e){}
    }//GEN-LAST:event_jMenuItem1ActionPerformed
    
    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
        if(jButton3.getText()=="加密明文"){
            if(EncKey==true){//如果已产生密钥，则读取明文并加密
                jMenuItem6.setEnabled(true);
                jTextArea3.setText("");
                EncFileThread EncFileTh=new EncFileThread();
                EncFileTh.start();//调用加密明文线程
                jButton3.setText("停止加密");
            } else{ JOptionPane.showMessageDialog(HLEncRSAFace.this,
                    "你还没有读取公钥，请先读取公钥！",
                    "Error",
                    JOptionPane.ERROR_MESSAGE);
            }
        } else {
            stop=true;
            jMenuItem6.setEnabled(false);
        }
    }//GEN-LAST:event_jButton3ActionPerformed
    
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        readKey=true;
        try{
            srcFileLoader();//打开公钥文件
        } catch(Exception e){}
        
    }//GEN-LAST:event_jButton1ActionPerformed
    private void displayEncFile(){//输出密文方法
        HLEncRSAFace.this.setTitle("HL-RSA加密器 - 正在输出密文...");
        String stri="密文如下："+"\n";
        jTextArea3.setText(stri+this.EncString);//输出加密后的密文
        HLEncRSAFace.this.setTitle("HL-RSA加密器");
    }
    private void setProgressBar(int progresserLength){//出来进度条
        float pos=(float)progresserPos/progresserLength*100;
        jLabel4.setText("已加密："+(String.valueOf((int)pos))+" %");
        progresser.setValue(progresserPos);
    }
    
    private void encFile(){//对明文进行加密方法
        if(-1!=jTextArea2.getText().length()){//明文非空
            HLEncRSAFace.this.setTitle("HL-RSA加密器 - 正在加密“"+fileName+"”文件");
            //获取明文
            String stringText=jTextArea2.getText();
            staticEncRSA.setMessage(stringText);
            jMenuItem3.setEnabled(false);
            jMenuItem3.setText("正在加密");
            String stri="密文如下："+"\n";
            jTextArea3.setText(stri);//输出加密后的密文
            progresserPos=0;
            try{int progresserLength=stringText.getBytes("UTF-8").length;
            	progresser.setMaximum(progresserLength);
            	while(staticEncRSA.nextSectUnencText(1024)&&stop==false){
                	//当前明文段的字节数组长度
                	this.ByteTextlength=staticEncRSA.getByteTextLength();
                	//复位STextEndPos
                	int STextEndPos=0;
                	progresserPos+=this.ByteTextlength;
                	setProgressBar(progresserLength);
                	while(STextEndPos<this.ByteTextlength&&stop==false){
                    	STextEndPos=staticEncRSA.EncRsa(STextEndPos);//调用加密类的加密方法
                    	this.STextEndPos=STextEndPos;
                	}
                	staticEncRSA.froEncRsa();
            	}
            	if(stop==false){
                	staticEncRSA.writeEncStringToFile();
                	JOptionPane.showMessageDialog(HLEncRSAFace.this,
                        "明文已成功加密！",
                        "恭喜，加密成功！",
                        JOptionPane.INFORMATION_MESSAGE);
                	this.EncString=staticEncRSA.getEncString();
                	DisplayEncFileThread DisplayFile=new DisplayEncFileThread();
                	DisplayFile.start();//调用另一线程输出密文
            	} else {JOptionPane.showMessageDialog(HLEncRSAFace.this,
                    "加密明文已取消！",
                    "提示！",
                    JOptionPane.INFORMATION_MESSAGE);
            		progresser.setValue(0);
            		jButton3.setText("加密明文");
            		jLabel4.setText("已加密："+(String.valueOf(0))+" %");
            		}		
            	jMenuItem3.setEnabled(true);
            	jMenuItem3.setText("加密明文");
            } catch(Exception e){ }
        } else {JOptionPane.showMessageDialog(HLEncRSAFace.this,
                "明文为空,请输入或打开明文！",
                "Error",
                JOptionPane.ERROR_MESSAGE);
          }
       	stop=false;
        jButton3.setText("加密明文");
    }
    private void srcFileLoader()throws Exception{//浏览文件，打开文件
        JFileChooser fileChooser=new JFileChooser(".");
        int r=fileChooser.showOpenDialog(HLEncRSAFace.this);
        File file=fileChooser.getSelectedFile();
        if (file.isFile() && file.canRead()) {
            if(readFile==true){
                fileName=file.getName();
                readFile=false;
                if(r==JFileChooser.APPROVE_OPTION) {
                    try{
                        BufferedReader br=new BufferedReader(new InputStreamReader(new FileInputStream(file)));
                        String s="";
                        jTextArea2.setText(s);
                        while((s=br.readLine())!=null) {
                            jTextArea2.append(s+"\n");
                        }
                        br.close();
                    } catch(IOException except){
                        except.printStackTrace();
                    }
                }
            }
            if(readKey==true){
                keyName=file.getPath();
                staticEncRSA.readPublicKey(keyName);
                jTextField1.setText(staticEncRSA.getMid_E());//输出公开密钥e
                jTextArea1.setText(staticEncRSA.getMid_N());//输出公开密钥n
                EncKey=true;
                readKey=false;
            }
        } else{JOptionPane.showMessageDialog(HLEncRSAFace.this,
                "打开文件失败: " + file,
                "Error",
                JOptionPane.ERROR_MESSAGE);
        }
    }
    public void save(){	//保存明文操作
        JFileChooser chooser;
        chooser=new JFileChooser(".");
        int r=chooser.showSaveDialog(HLEncRSAFace.this);
        if(r==JFileChooser.APPROVE_OPTION){
            File file=chooser.getSelectedFile();
            if(file.getName().indexOf(".")!=-1)
                ;
            else file=new File(file.getPath()+".txt");
            String content=jTextArea2.getText();
            content=StringEdit.StringReplace(content,"\n","\r\n");
            try{
                BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file)));
                bw.write(content);
                bw.close();
            } catch(IOException ioe) {
                ioe.printStackTrace();
            }
        }
    }
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]){
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new HLEncRSAFace(new HLEncRSA()).setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenu2;
    private javax.swing.JMenu jMenu3;
    private javax.swing.JMenu jMenu4;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JMenuItem jMenuItem1;
    private javax.swing.JMenuItem jMenuItem2;
    private javax.swing.JMenuItem jMenuItem3;
    private javax.swing.JMenuItem jMenuItem4;
    private javax.swing.JMenuItem jMenuItem5;
    private javax.swing.JMenuItem jMenuItem6;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JRadioButtonMenuItem jRadioButtonMenuItem1;
    private javax.swing.JRadioButtonMenuItem jRadioButtonMenuItem2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane2;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JSplitPane jSplitPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextArea jTextArea2;
    private javax.swing.JTextArea jTextArea3;
    private javax.swing.JTextField jTextField1;
    // 变量声明结束//GEN-END:variables
    private File srcfile;
    private JProgressBar progresser;
    private Boolean EncKey,readKey,readFile,stop,pause;
    private int STextEndPos,ByteTextlength,progresserPos;
    private String fileName,keyName;
    private String EncString;
    private String str1 = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
    private String str2 = "javax.swing.plaf.metal.MetalLookAndFeel";
    private EncFileThread EncFileTh;
}

class StringEdit//保存明文文件辅助类
{
    public static String StringReplace(String Source,String indexStr,String replaceWord) {
        int scanPoint=0;
        String backUp=Source;
        while(scanPoint!=-1&&scanPoint<backUp.length()) {
            scanPoint=backUp.indexOf(indexStr,scanPoint);
            if(scanPoint!=-1) {
                String frontStr=backUp.substring(0,scanPoint);
                String backStr=backUp.substring(scanPoint+indexStr.length(),backUp.length());
                backUp=frontStr+replaceWord+backStr;
                scanPoint++;
                scanPoint+=(replaceWord.length()-indexStr.length());
            }
        }
        return backUp;
    }
    
}