Error in Java program

Sounds like your classpath is wrong and the Bouncy Castle jars are not in it

It seems package org.bouncycastle.jce.provider  is missing ,please look for package in your project structure naming
 org.bouncycastle.jce.provider.proper jars should be in the place (in the build path if required dependency)

Put in classpath these two libraries:

bcprov.jar
bcpkix.jar

Can't find these jar files, where can I download them ? Thx

I have downloaded the JAR File : http://www.java2s.com/Code/Jar/b/Downloadbouncycastlejcejdk13112jar.htm and put it under the library of my NetBean project. However, another message prompt up.


No such algorithm: DES/CRT/Nopadding. Any idea ?


    private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {                                        
       
        try {
           Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

            input = Simple_txt.getText().getBytes();
            SecretKeySpec key = new SecretKeySpec(keyBytes, "DES");
            IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
           
            cipher = Cipher.getInstance("DES/CRT/NoPadding", "BC");
            cipher.init(Cipher.ENCRYPT_MODE, key,ivSpec);
           
            cipherText = new byte[cipher.getOutputSize(input.length)];
           
           ctLength = cipher.update(input, 0, input.length, cipherText, 0);
           
           ctLength += cipher.doFinal(cipherText, ctLength);
           Encrypt_txt.setText(new String(cipherText));
           System.out.println("cipher: " + new String(cipherText));
           
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, ex);
         }
       
    }

Cipher.getInstance("DES/CRT/NoPadding", "BC");

Select allOpen in new window

What code have you got that leads you to believe that algo is possible from that provider and where did you get it?

Thanks AXIHSK,it's nice to see its worked for you.you are most welcome.