import java.security.*; 
import javax.crypto.*; 
import java.io.*;
public class DecryptHandler { 
	//<encryptedData> <secretKey> <decryptetData>
	public static void main(String args[]) { 
		try {
			//secretKey
			FileInputStream fis = new FileInputStream(args[1]);
			ObjectInputStream ois = new ObjectInputStream(fis);
			//decryptedData
			FileOutputStream fos = new FileOutputStream(args[2]);
			SecretKey key = (SecretKey)ois.readObject();
			ois.close();
			Cipher c = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
			c.init(Cipher.DECRYPT_MODE, key);
			//encryptedData
			fis = new FileInputStream(args[0]);
			CipherOutputStream cos = new CipherOutputStream(fos, c);
			byte[] b = new byte[8];
			int i = fis.read(b);
			while (i != -1){
				cos.write(b, 0, i);
				i = fis.read(b);
			}
			cos.flush();
			cos.close();
			fis.close();
			fos.close();
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}