Aes类

public class AesUtils {
    private static final Logger LOGGER = LoggerFactory.getLogger(AesUtils.class);
    private static final String ENCODING = "UTF-8";
    private static final String AES_ALGORITHM = "AES";
    private static final String CIPHER_PADDING = "AES/ECB/NoPadding";
    private static final String CIPHER_CBC_PADDING = "AES/CBC/NoPadding";
    private static final String IV_SEED = "1234567812345678";

    public static byte[] encrypt(byte[] content, String aesKey) {
        if (content == null || content.length == 0) {
            LOGGER.info("AES encrypt: the content is null!");
            return null;
        }
        int n = content.length / 16 + 1;
        byte[] result = new byte[16 * n];
        System.arraycopy(content, 0, result, 0, content.length);
        for (int i = content.length; i < result.length; i++) {
            result[i] = 0x00;
        }
        if (StringUtils.isNotBlank(aesKey)) {
            try {
                byte[] bytes = HexUtils.hexToByteArray(aesKey);
                if (bytes.length != 16) {
                    throw new RuntimeException("AES length error");
                }
                SecretKeySpec skeySpec = new SecretKeySpec(bytes, AES_ALGORITHM);
                Cipher cipher = Cipher.getInstance(CIPHER_PADDING);
                cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
                byte[] encrypted = cipher.doFinal(result);
                return encrypted;
            } catch (Exception e) {
                LOGGER.info("AES encrypt exception:" + e.getMessage());
                throw new RuntimeException(e);
            }

        } else {
            LOGGER.info("AES encrypt: the aesKey is null or error!");
            return null;
        }
    }

    public static byte[] decrypt(byte[] content, String aesKey) {
        if (content == null || content.length == 0) {
            LOGGER.info("AES decrypt: the content is null!");
            return null;
        }
        if (StringUtils.isNotBlank(aesKey)) {
            try {
                byte[] bytes = HexUtils.hexToByteArray(aesKey);
                if (bytes.length != 16) {
                    throw new RuntimeException("AES length error");
                }
                SecretKeySpec skeySpec = new SecretKeySpec(bytes, AES_ALGORITHM);
                Cipher cipher = Cipher.getInstance(CIPHER_PADDING);
                cipher.init(Cipher.DECRYPT_MODE, skeySpec);
                byte[] decrypted = cipher.doFinal(content);
                return decrypted;
            } catch (Exception e) {
                LOGGER.info("AES decrypt exception:" + e.getMessage());
                throw new RuntimeException(e);
            }
        } else {
            LOGGER.info("AES decrypt: the aesKey is null or error!");
            return null;
        }
    }
}