Problem crypting/decrypting with Blowfish algorithm

Question

Hi,
I'm doing an application which encrypt decrypt which blowfish algorithm.
It works well, but not at all, when I crypt/decrypt a text file, the last line on the textfile disapear...
The crypting class is this :
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
public class Encrypteur {
private Cipher blowfish;
private SecretKeySpec key;
public Encrypteur(byte[] key) {
this.key = new SecretKeySpec(key, "Blowfish");
loadBlowfish();
public Encrypteur(){
loadBlowfish();
private void loadBlowfish(){
try{
blowfish = Cipher.getInstance("Blowfish");
}catch(NoSuchAlgorithmException e){
System.out.println("[Encrypteur][loadBlowfish] NoSuchAlgorithmException : "+e);
}catch(NoSuchPaddingException e){
System.out.println("[Encrypteur][loadBlowfish] NoSuchAlgorithmException : "+e);
public static byte[] generateKey(){
byte[] raw = null;
try{
KeyGenerator kgen = KeyGenerator.getInstance("Blowfish");
SecretKey skey = kgen.generateKey();
raw = skey.getEncoded();
}catch(NoSuchAlgorithmException e){
System.out.println("[Encrypteur][generateKey]" + e);
e.printStackTrace();
return raw;
public void setKey(byte[] key){
this.key = new SecretKeySpec(key, "Blowfish");
public void encryptFile(File inputFile, File outputFile){
try{
blowfish.init(Cipher.ENCRYPT_MODE, key);
FileOutputStream fOS = new FileOutputStream(outputFile);
OutputStream oS = new CipherOutputStream( fOS, blowfish);
InputStream iS = new FileInputStream(inputFile);
int numRead = 0;
while((numRead = iS.read()) != -1 ){
oS.write(numRead);
iS.close();
fOS.close();
oS.close();
}catch(FileNotFoundException e){
System.out.println("[Encrypteur][encryptFile] FileNotFoundException : " + e);
e.printStackTrace();
}catch(InvalidKeyException e){
System.out.println("[Encrypteur][encryptFile] InvalidKeyException : " + e);
e.printStackTrace();
}catch(IOException e){
System.out.println("[Encrypteur][encryptFile] IOException : " + e);
e.printStackTrace();
public void decryptFile(File inputFile, File outputFile){
try{
blowfish.init(Cipher.DECRYPT_MODE, key);
FileOutputStream fOS = new FileOutputStream(outputFile);
OutputStream oS = new CipherOutputStream( fOS, blowfish);
InputStream iS = new FileInputStream(inputFile);
int numRead = 0;
while((numRead = iS.read()) != -1 ){
oS.write(numRead);
iS.close();
fOS.close();
oS.close();
}catch(FileNotFoundException e){
System.out.println("[Encrypteur][encryptFile] FileNotFoundException : " + e);
e.printStackTrace();
}catch(InvalidKeyException e){
System.out.println("[Encrypteur][encryptFile] InvalidKeyException : " + e);
e.printStackTrace();
}catch(IOException e){
System.out.println("[Encrypteur][encryptFile] IOException : " + e);
e.printStackTrace();
And don't from where it can come... Perhaps from the reading of files ?
or perhaps from Cipher class ?
thanks of your solutions :)

Answer 1

I find from where it come :)
To decrypt the file I had to use a CipherInputStream and not a CipherOutputStream.
not it works well.