国密算法-SM4加解密工具类

import cn.hutool.crypto.symmetric.SymmetricCrypto;


/**
 * @author : chenfan
 * @className : SM4Utils
 * @date : Created in 2022/11/3 13:55
 * @description :国密算法SM4加解密工具类
 */

/**
 * 国密SM4分组密码算法工具类（对称加密）
 */
public class SM4Utils {
          
   
    //SM4-加密
    public static String encryptSm4(String plaintext, String key) {
          
   
        //指明加密算法和秘钥
        SymmetricCrypto sm4 = new SymmetricCrypto("SM4/ECB/PKCS5Padding", key.getBytes());
        return sm4.encryptHex(plaintext);
    }

    //SM4-解密
    public static String decryptSm4(String ciphertext, String key) {
          
   
        //指明加密算法和秘钥
        SymmetricCrypto sm4 = new SymmetricCrypto("SM4/ECB/PKCS5Padding", key.getBytes());
        return sm4.decryptStr(ciphertext);
    }

    public static void main(String[] args) {
          
   
        String content = "Hello SM4 国密算法";
        String key = "pGmo2jZkrR8JqlQn";
        String plain = encryptSm4(content, key);
        String cipher = decryptSm4(plain, key);
        System.out.println(plain + "
" + cipher);
    }

}

运行结果：