FRLrZ54e

1package com.test;
2
3import org.junit.Test;
4
5import javax.crypto.Cipher;
6import javax.crypto.CipherOutputStream;
7import javax.crypto.spec.SecretKeySpec;
8import java.io.*;
9import java.util.zip.GZIPOutputStream;
10
11public class CipherExample {
12
13    String fileIn = "file.dat";
14    String fileOut1 = "file1.dat";
15    String fileOut2 = "file2.dat";
16    String fileOut3 = "file3.dat";
17    String fileOut4 = "file4.sec.zip";
18    String fileOut5 = "file5.sec.zip";
19
20    String secretKey = "1234567812345678";
21
22    private Cipher getCipher(String key) throws Exception
23    {
24        SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "AES");
25        Cipher cipher = Cipher.getInstance("AES");
26        cipher.init(Cipher.ENCRYPT_MODE, keySpec);
27
28        return cipher;
29    }
30
31    private void copy(InputStream inStream, OutputStream outStream) throws IOException
32    {
33        int b;
34        while ((b = inStream.read()) > 0 )
35        {
36            outStream.write(b);
37        }
38    }
39
40    @Test
41    public void doCopy() throws Exception
42    {
43        InputStream inStream = new FileInputStream(fileIn);
44        OutputStream outStream = new FileOutputStream(fileOut1);
45
46        copy(inStream, outStream);
47    }
48
49    @Test
50    public void doZip() throws Exception
51    {
52        InputStream inStream = new FileInputStream(fileIn);
53        OutputStream outStream = new GZIPOutputStream(new FileOutputStream(fileOut2));
54
55        copy(inStream, outStream);
56
57        inStream.close();
58        outStream.close();
59    }
60
61    @Test
62    public void doCipher() throws Exception
63    {
64        InputStream inStream = new FileInputStream(fileIn);
65        OutputStream outStream = new CipherOutputStream(new FileOutputStream(fileOut3), getCipher(secretKey));
66
67        copy(inStream, outStream);
68
69        inStream.close();
70        outStream.close();
71    }
72
73    @Test
74    public void doAll() throws Exception
75    {
76        InputStream inStream = new FileInputStream(fileIn);
77        OutputStream outStream = new GZIPOutputStream(new CipherOutputStream(new FileOutputStream(fileOut4), getCipher(secretKey)));
78
79        copy(inStream, outStream);
80
81        inStream.close();
82        outStream.close();
83    }
84
85    @Test
86    public void doAll2() throws Exception
87    {
88        InputStream inStream = new FileInputStream(fileIn);
89        OutputStream outStream = new CipherOutputStream(new GZIPOutputStream(new FileOutputStream(fileOut5)), getCipher(secretKey));
90
91        copy(inStream, outStream);
92
93        inStream.close();
94        outStream.close();
95    }
96
97    //W DOMU OTWORZ ZASZYFROWANE PLIKI ODCZYTAJ JE
98}