Z7uGL8Uq

1package org.aesfile.LinuxEYE;
2
3import java.io.File;
4import java.io.FileInputStream;
5import java.io.FileOutputStream;
6import java.nio.ByteBuffer;
7import java.security.SecureRandom;
8import java.security.spec.KeySpec;
9import javax.crypto.Cipher;
10import javax.crypto.SecretKey;
11import javax.crypto.SecretKeyFactory;
12import javax.crypto.spec.GCMParameterSpec;
13import javax.crypto.spec.PBEKeySpec;
14import javax.crypto.spec.SecretKeySpec;
15
16public class aesFile {
17
18	public static void main(String[] args) throws Exception {
19		if (args.length != 3) {
20			System.out.println("java -jar *.jar <path to file> <24 character AESKey> <enc|dec>");
21			return;
22		}
23		File file = new File(args[0]);
24		byte[] fileByte = fileToBytes(file);
25		byte[] encByte = encryptBytes(args[1], fileByte);
26		for (int i=0;i<fileByte.length;i++) {
27			System.out.println(fileByte[i]);
28		}
29		System.out.println("plain Bytes");
30		if (args[2].equals("enc")) {
31			createFile(encByte, args[0]);
32		}
33	}
34	public static void createFile(byte[] array, String dest) {
35		try (FileOutputStream fout = new FileOutputStream(dest)) {
36			fout.write(array);
37		}catch (Exception e) {
38			System.out.println("File Outputed");
39		}
40	}
41	public static byte[] fileToBytes(File file) {
42		FileInputStream fis;
43		byte[] byteArray = new byte[(int) file.length()];
44		try {
45			fis = new FileInputStream(file);
46			fis.read(byteArray);
47			fis.close();
48		} catch (Exception e) {
49			e.printStackTrace();
50		}
51		return byteArray;
52	}
53	public static byte[] encryptBytes(String key, byte[] data) throws Exception {
54		SecureRandom sR = new SecureRandom();
55		byte[] iv = new byte[16];
56		sR.nextBytes(iv);
57		SecretKey sK = generateSecretKey(key, iv);
58		Cipher c = Cipher.getInstance("AES/GCM/NoPadding");
59		GCMParameterSpec pS = new GCMParameterSpec(128, iv);
60		c.init(c.ENCRYPT_MODE, sK, pS);
61		byte[] encryptedData = c.doFinal(data);
62		ByteBuffer bb = ByteBuffer.allocate(4 + iv.length + encryptedData.length);
63		bb.putInt(iv.length);
64		bb.put(iv);
65		bb.put(encryptedData);
66		return bb.array();
67	}
68	public static SecretKey generateSecretKey(String password, byte [] iv) throws Exception {
69        KeySpec spec = new PBEKeySpec(password.toCharArray(), iv, 65536, 128); 
70        SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
71        byte[] key = secretKeyFactory.generateSecret(spec).getEncoded();
72        return new SecretKeySpec(key, "AES");
73    }
74	
75}