BadPaddingException

[swmk]

I've been getting this BadPaddingException;

Code:

javax.crypto.BadPaddingException: Given final block not properly padded
        at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
        at com.sun.crypto.provider.SunJCE_f.b(DashoA13*..)
        at com.sun.crypto.provider.PKCS12PBECipherCore.b(DashoA13*..)
        at com.sun.crypto.provider.PKCS12PBECipherCore$PBEWithSHA1AndRC2_40.engineDoFinal(DashoA13*..)
        at javax.crypto.Cipher.doFinal(DashoA13*..)

Here are some parts of the code;

encrypt() method;

Code:

public Status encrypt(EncryptParams params){
        
        Status retValue = Status.getDefault();
        params.makeup();
        
        File source = new File(params.getSource());
        File destination = new File(params.getDestination());
        
        try{
            FileInputStream fis = new FileInputStream(source);
            FileOutputStream fos = new FileOutputStream(destination);
            BufferedOutputStream bos = new BufferedOutputStream(fos);
            Cipher cipher = getDefaultChipher(params.getPassword(), Cipher.ENCRYPT_MODE);
            if(cipher == null){
                retValue.setStatus(StatusValue.ERROR.value());
                retValue.setDescription("Unable to initialize encryption parameters.");
                return retValue;
            }
            
            long length = source.length();
            final int BUFFERSIZE = (5 * 1024) * 1024;
            byte inbuffer [] = new byte[BUFFERSIZE];
            byte buffer [];
            
            while(true){
                if(BUFFERSIZE > fis.available()){
                    inbuffer = new byte[fis.available()];
                }
                int nbytes = fis.read(inbuffer);
                if(nbytes == -1){
                    break;
                }
                buffer = cipher.doFinal(inbuffer);
                bos.write(buffer);
                if(fis.available()<1){break;}
            }
            fis.close();
            bos.close();
            
        }catch(IOException e){
            retValue.setException(e);
            return retValue;
        }catch(Exception e){
            e.printStackTrace();
            retValue.setException(e);
            return retValue;
        }
        retValue = Status.getSuccess();
        return retValue;
    }

decrypt() method;

Code:

public Status decrypt(EncryptParams params){
        Status retValue = Status.getDefault();
        params.makeup();
        
        File source = new File(params.getSource());
        File destination = new File(params.getDestination());
        
        if(!source.exists()){
            retValue.setStatus(StatusValue.ERROR.value());
            retValue.setDescription("Source must exist.");
            return retValue;
        }
        
        if(destination.exists()){
            retValue.setStatus(StatusValue.ERROR.value());
            retValue.setDescription("Destination file must not exist.");
            return retValue;
        }
        
        try{
            FileInputStream fis = new FileInputStream(source);
            FileOutputStream fos = new FileOutputStream(destination);
            BufferedOutputStream bos = new BufferedOutputStream(fos);
            Cipher cipher = getDefaultChipher(params.getPassword(), Cipher.DECRYPT_MODE);
            if(cipher == null){
                retValue.setStatus(StatusValue.ERROR.value());
                retValue.setDescription("Unable to initialize encryption parameters.");
                return retValue;
            }
            
            long length = source.length();
            final int BUFFERSIZE = (5 * 1024) * 1024;
            byte inbuffer [] = new byte[BUFFERSIZE];
            byte buffer [];
            
            while(true){
                if(BUFFERSIZE > fis.available()){
                    inbuffer = new byte[fis.available()];
                }
                int nbytes = fis.read(inbuffer);
                if(nbytes == -1){
                    break;
                }
                buffer = cipher.doFinal(inbuffer);
                bos.write(buffer);
                if(fis.available()<1){break;}
            }
            fis.close();
            bos.close();
            
        }catch(IOException e){
            retValue.setException(e);
            return retValue;
        }catch(Exception e){
            e.printStackTrace();
            retValue.setException(e);
            return retValue;
        }
        retValue = Status.getSuccess();
        return retValue;
    }

Method, getDefaultCipher;

Code:

private Cipher getDefaultChipher(String passphrase, int mode){
        Cipher retValue = null;
        byte []salt = new byte [DEFAULT_SALT];
        
        PBEKeySpec ks = new PBEKeySpec(passphrase.toCharArray());
        
        try{
            SecretKeyFactory skf = SecretKeyFactory.getInstance(DEFAULT_ALGORITHM);
            SecretKey key = skf.generateSecret(ks);
            
            PBEParameterSpec pspec = new PBEParameterSpec(salt, DEFAULT_ITERATION);
            
            Cipher cipher = Cipher.getInstance(DEFAULT_ALGORITHM);
            cipher.init(mode, key, pspec);
            
            retValue = cipher;
        }catch(Exception e){
            e.printStackTrace();
            return null;
        }
        return retValue;
    }

Exception was raised when the file size if bigger than BUFFERSIZE in decrypting back.

Can anyone suggest me?