java中不基于base64的AES128算法

网上大部分的AES128都需要经过base64加解密,其实AES128算法已经相对安全,在对于加解密效率比较高的场景下,夹杂在其中的base64加密算法是没有必要的,反而对性能影响比较大,今天就分享一个不需要base64的AES加解密算法实现:

如果想用基于base64的实现,请看我上一篇博文

工具类:

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.AlgorithmParameters;

public class Nobase64AESUtils {


    public static byte[] encrypt(byte[] originalContent, byte[] encryptKey, byte[] ivByte) {
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            SecretKeySpec skeySpec = new SecretKeySpec(encryptKey, "AES");
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec, new IvParameterSpec(ivByte));
            byte[] encrypted = cipher.doFinal(originalContent);
            return encrypted;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    public static byte[] decrypt(byte[] content, byte[] aesKey, byte[] ivByte) {
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            SecretKeySpec sKeySpec = new SecretKeySpec(aesKey, "AES");
            cipher.init(Cipher.DECRYPT_MODE, sKeySpec, generateIV(ivByte));// 初始化
            byte[] result = cipher.doFinal(content);
            return result;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    // 生成iv
    public static AlgorithmParameters generateIV(byte[] iv) throws Exception {
        AlgorithmParameters params = AlgorithmParameters.getInstance("AES");
        params.init(new IvParameterSpec(iv));
        return params;
    }
}

Main方法测试类:

public class TestNobase64AES {
    public static void main(String[] args) throws Exception {
        byte[] china = "中国加油".getBytes();

        byte[] encrypt = Nobase64AESUtils.encrypt(china, "aaaaaaaaaaaaaaaa".getBytes(), "iviviviviviviviv".getBytes());

        byte[] decrypt = Nobase64AESUtils.decrypt(null, "baaaaaaaaaaaaaaa".getBytes(), "iviviviviviviviv".getBytes());

        System.out.println(new String(decrypt, "utf-8"));


    }
}