package com.thhy.general.utils.password;

import com.thhy.general.common.BasicStatus;
import com.thhy.general.exception.BasicException;

/**
 * @Author: zhang_xiao_bo
 * @Date: 2022/3/22 13:38
 * @description:
 */
public class PasswdUtils {

    public static final String HASH_ALGORITHM = "SHA-1";
    public static final int HASH_INTERATIONS = 1024;
    public static final int SALT_SIZE = 8;

    public static String encodePassword(String plainPassword){
        String plain = plainPassword;
        byte[] salt = Digests.generateSalt(SALT_SIZE);
        byte[] hashPassword = Digests.sha1(plain.getBytes(), salt, HASH_INTERATIONS);
        return Encodes.encodeHex(salt)+Encodes.encodeHex(hashPassword);
    }

    public static boolean validatePassword(String plainPassword, String password) {
        //String plain = Encodes.unescapeHtml(plainPassword);
        try {
            byte[] salt = Encodes.decodeHex(password.substring(0,16));
            byte[] hashPassword = Digests.sha1(plainPassword.getBytes(), salt, HASH_INTERATIONS);
            return password.equals(Encodes.encodeHex(salt)+Encodes.encodeHex(hashPassword));
        } catch (Exception e) {
            throw new BasicException(BasicStatus.LOGIN_FAILD);
        }
    }

    public static void main(String[] args) {
        String ss = encodePassword("123456");
        System.out.println(ss);
        //System.out.println(validatePassword("ming123456",ss));
    }
}