AES加密

待完善

public class AES {
    /*
     * 加密用的Key 可以用26个字母和数字组成 使用AES-128-CBC加密模式，key需要为16位。
     */
    private static final String key="KNr2u9q7pV8ZgDfB";
    private static final String iv ="0102030405060708";
    /**
     * @author miracle.qu
     * @Description AES算法加密明文
     * @param data 明文
     * @return 密文
     */
    public static String encryptAES(String data) throws Exception {
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            int blockSize = cipher.getBlockSize();
            byte[] dataBytes = data.getBytes();
            int plaintextLength = dataBytes.length;

            if (plaintextLength % blockSize != 0) {
                plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
            }

            byte[] plaintext = new byte[plaintextLength];
            System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);

            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());  // CBC模式，需要一个向量iv，可增加加密算法的强度

            cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
//            byte[] encrypted = cipher.doFinal(plaintext);
            byte[] encrypted = cipher.doFinal(dataBytes);

            return new BASE64Encoder().encode(encrypted); // BASE64做转码。

        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) throws Exception {
        System.out.println(encryptAES("TU4Bhswf+ezuzeyko9WzYN9nPsBUwg0WXsm7X6nXQQa1ssKXzFndddg5D9rrw4P1/rc7PfYeI2OFFgseTap+8uedMg5tVM/a8F5US6qDtLY="));
    }

}