Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import javax.crypto.Cipher;

import javax.crypto.spec.SecretKeySpec;

public class Main {
    public static byte[] decodeFile(byte[] key, byte[] fileData, boolean isPlainText) throws Exception {
        byte[] decrypted;
        if (!isPlainText) {
            decrypted = new byte[fileData.length - key.length * 2];
            System.arraycopy(fileData, key.length, decrypted, 0, decrypted.length);
        } else {
            SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
            Cipher cipher = Cipher.getInstance("AES");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);

            decrypted = cipher.doFinal(fileData);
        }
        return decrypted;
    }
}