0hKWF3Fm

1/*
2 * To change this license header, choose License Headers in Project Properties.
3 * To change this template file, choose Tools | Templates
4 * and open the template in the editor.
5 */
6package br.com.solutionsource.forcavendas.seguranca;
7
8import java.security.spec.KeySpec;
9import javax.crypto.Cipher;
10import javax.crypto.SecretKey;
11import javax.crypto.SecretKeyFactory;
12import javax.crypto.spec.DESedeKeySpec;
13import org.apache.commons.codec.binary.Base64;
14
15/**
16 *
17 * @author Marcelo
18 */
19public class Criptografia {
20
21    private static final String UNICODE_FORMAT = "UTF8";
22    private KeySpec ks;
23    private SecretKeyFactory skf;
24    private Cipher cipher;
25    byte[] arrayBytes;
26    private String myEncryptionScheme;
27    private String chave; // 2 x 12 caracteres
28    SecretKey key;
29
30    public Criptografia() throws Exception {
31
32        chave = "AChaveSeguraAChaveSegura"; // 2 x 12 caracteres
33        myEncryptionScheme = "DESede";
34        arrayBytes = chave.getBytes(UNICODE_FORMAT);
35        ks = new DESedeKeySpec(arrayBytes);
36        skf = SecretKeyFactory.getInstance(myEncryptionScheme);
37        cipher = Cipher.getInstance(myEncryptionScheme);
38        key = skf.generateSecret(ks);
39    }
40
41    public String criptografa(String texto) {
42        String criptografado = null;
43        try {
44            cipher.init(Cipher.ENCRYPT_MODE, key);
45            byte[] plainText = texto.getBytes(UNICODE_FORMAT);
46            byte[] encryptedText = cipher.doFinal(plainText);
47            criptografado = new String(Base64.encodeBase64(encryptedText));
48        } catch (Exception e) {
49            e.printStackTrace();
50        }
51        return criptografado;
52    }
53
54    public String descriptografa(String criptografado) {
55        String descriptografado = null;
56        try {
57            cipher.init(Cipher.DECRYPT_MODE, key);
58            byte[] encryptedText = Base64.decodeBase64(criptografado);
59            byte[] plainText = cipher.doFinal(encryptedText);
60            descriptografado = new String(plainText);
61        } catch (Exception e) {
62            e.printStackTrace();
63        }
64        return descriptografado;
65    }
66    
67    
68
69}