BfiLixzM

1import static org.apache.commons.lang3.StringUtils.isBlank;
2
3import java.util.Base64;
4
5import javax.crypto.Cipher;
6import javax.crypto.spec.IvParameterSpec;
7import javax.crypto.spec.SecretKeySpec;
8
9/**
10 * Helper encryption function.
11 */
12public class EncryptUtils {
13
14    private final static String KEY = "AWTyTh4cjqo5uMdXb0JHkj2q0xf719uE";
15    private final static String ALGO = "AES/CBC/PKCS5Padding";
16
17    public static String encrypt(String clearTxt) {
18        if (isBlank(clearTxt)) {
19            throw new IllegalArgumentException("Impossible to encrypt an empty string");
20        }
21
22        try {
23            final SecretKeySpec secretKey = new SecretKeySpec(KEY.getBytes(), "AES");
24            Cipher cipher = Cipher.getInstance(ALGO);
25            cipher.init(Cipher.ENCRYPT_MODE, secretKey, new IvParameterSpec(new byte[16]));
26            byte[] encrypted = cipher.doFinal(clearTxt.getBytes());
27            return Base64.getEncoder().encodeToString(encrypted);
28        } catch (Exception e) {
29            throw new SecurityException("Something went wrong with the encrypt function...", e);
30        }
31    }
32
33    public static String decrypt(String encryptedTxt) {
34        if (isBlank(encryptedTxt)) {
35            throw new IllegalArgumentException("Impossible to decrypt an empty string");
36        }
37
38        try {
39            final SecretKeySpec secretKey = new SecretKeySpec(KEY.getBytes(), "AES");
40            Cipher cipher = Cipher.getInstance(ALGO);
41            cipher.init(Cipher.DECRYPT_MODE, secretKey, new IvParameterSpec(new byte[16]));
42            byte[] decrypted = cipher.doFinal(Base64.getDecoder().decode(encryptedTxt));
43            return new String(decrypted);
44        } catch (Exception e) {
45            throw new SecurityException("Something went wrong with the decrypt function...", e);
46        }
47    }
48}