uJFHsAtQ

1
2package javaapplication3;
3
4import java.nio.charset.StandardCharsets;
5import javax.crypto.Cipher;
6import javax.crypto.spec.SecretKeySpec;
7
8public class EncClass{
9    
10    public byte[] encrypt(byte[] plainText, String chave, String ALGORITHM) throws Exception
11    {
12        
13        byte[] encryptionKey = chave.getBytes(StandardCharsets.UTF_8);
14        SecretKeySpec secretKey = new SecretKeySpec(encryptionKey, ALGORITHM);
15        Cipher cipher = Cipher.getInstance(ALGORITHM);
16        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
17
18        return cipher.doFinal(plainText);
19    }
20
21    public byte[] decrypt(byte[] cipherText, String chave, String ALGORITHM) throws Exception
22    {
23        byte[] encryptionKey = chave.getBytes(StandardCharsets.UTF_8);
24        SecretKeySpec secretKey = new SecretKeySpec(encryptionKey, ALGORITHM);
25        Cipher cipher = Cipher.getInstance(ALGORITHM);
26        cipher.init(Cipher.DECRYPT_MODE, secretKey);
27
28        return cipher.doFinal(cipherText);
29    }
30}