Answer to Question #712 in Java | JSP | JSF for Gayethiri

Question #712
Hi there, I need to run this code in bluej java but, it wont allow me to. There are no syntax errors and basically im trying to encrypt a java file called "MyFriends.txt". Please help me out as its quite urgent. Below is my code thanks! import; import; import; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; public class FileEncrypt { public static void main(String[] args) throws Exception { byte[] plainData; byte[] encryptedData; KeyGenerator keygen = KeyGenerator.getInstance("DES"); SecretKey key = keygen.generateKey(); Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, key); File f = new File("input.txt"); FileInputStream in = new FileInputStream("MyFriends.txt"); plainData = new byte[(int)f.length()];; encryptedData = cipher.doFinal(plainData); FileOutputStream target = new FileOutputStream(new File("encrypted.txt")); target.write(encryptedData); target.close(); } }
Expert's answer
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