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1import java.io.*;
2import java.util.*;
3
4import java.security.*;
5
6import javax.crypto.Cipher;
7import javax.crypto.KeyGenerator;
8import javax.crypto.SecretKey;
9import javax.crypto.spec.SecretKeySpec;
10
11public class CryptoAES extends Files
12{
13  private int i;
14  private String StringKey;
15  private byte[] key;
16
17  public String GetKey()
18  {
19    return this.StringKey;
20  }
21
22  public void SetKey(byte[] key)
23  {
24    this.key = key;
25  }
26
27  /*public void EncryptSentence(String text)
28  {
29    Cipher cipher = Cipher.getInstance("AES");
30    cipher.init(Cipher.ENCRYPT_MODE, this.key);
31    byte[] plaintext = text.getBytes("UTF-8");
32  }*/
33
34  public void EncryptFile(File inFile, File oFile)
35  {
36    try
37    { Key secretKey = new SecretKeySpec(this.key, "AES");
38      Cipher cipher = Cipher.getInstance("AES");
39      cipher.init(Cipher.ENCRYPT_MODE, secretKey);
40
41      FileInputStream istream = new FileInputStream(inFile);
42      byte[] inBytes = new byte[(int) inFile.length()];
43
44      long byteL = inFile.length();
45      int byteLength = (int) byteL;
46      istream.read(inBytes, 0, byteLength);
47      byte[] outBytes = cipher.doFinal(inBytes);
48
49      FileOutputStream ostream = new FileOutputStream(oFile);
50      ostream.write(outBytes);
51
52      istream.close();
53      ostream.close();
54      System.out.println("Encryption complete.");
55    }
56    catch (Exception e)
57    {
58      System.out.println(e.toString());
59      System.out.println("Error encrypting file.");
60    }
61  }
62
63  public void DecryptFile(File inFile, File oFile)
64  {
65    try
66    {
67      Key secretKey = new SecretKeySpec(this.key, "AES");
68      Cipher cipher = Cipher.getInstance("AES");
69      cipher.init(Cipher.DECRYPT_MODE, secretKey);
70
71      FileInputStream istream = new FileInputStream(inFile);
72      byte[] inBytes = new byte[(int) inFile.length()];
73
74      istream.read(inBytes);
75      byte[] outBytes = cipher.doFinal(inBytes);
76      String outputtext = new String (outBytes, "UTF-8");
77
78      FileWriter ostream = new FileWriter(oFile);
79      ostream.write(outputtext);
80
81      istream.close();
82      ostream.close();
83    }
84    catch (Exception e)
85    {
86      System.out.println("Error decrypting file.");
87    }
88  }
89
90
91}