JdB653B2

1public  byte[] encrypt(byte[] plainTextByte, SecretKey secretKey,String algorithm)//zavrsiti ovu funkciju koja enkriptuje fajl
2            throws Exception {
3        Cipher cipher = Cipher.getInstance(algorithm);
4        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
5        byte[] encryptedBytes = cipher.doFinal(plainTextByte);
6
7        return encryptedBytes;
8    }
9
10    public byte[] decrypt(byte[] encryptedBytes, SecretKey secretKey,String algorithm)
11            throws Exception {
12        Cipher cipher = Cipher.getInstance(algorithm);
13        cipher.init(Cipher.DECRYPT_MODE, secretKey);
14        byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
15        return decryptedBytes;
16    }