/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.rule.util;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.crypto.SecureUtil;
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import lombok.extern.slf4j.Slf4j;
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/**
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* Token签名工具
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*
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* @author fengshuonan
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* @date 2022/8/1 17:41
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*/
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@Slf4j
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public class TokenSignUtil {
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/**
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* 根据时间戳和秘钥生成md5方式的签名字符串
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*
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* @param timestamp 生成sign时的时间戳
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* @param secretKey 生成时间戳需要的秘钥
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* @author fengshuonan
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* @date 2022/8/1 17:43
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*/
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public static String createSignStr(Long timestamp, String secretKey) {
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if (ObjectUtil.isEmpty(timestamp) || ObjectUtil.isEmpty(secretKey)) {
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return null;
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} else {
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return SecureUtil.md5(timestamp + secretKey);
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}
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}
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/**
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* 验证签名是否过期
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*
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* @param timestamp 生成签名时候的时间戳
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* @param secretKey 秘钥
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* @param signStr 签名字符串
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* @param expiredSeconds 签名过期时间
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* @author fengshuonan
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* @date 2022/8/1 17:48
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*/
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public static boolean validateSignStr(Long timestamp, String secretKey, String signStr, Integer expiredSeconds) {
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if (ObjectUtil.isEmpty(timestamp) || ObjectUtil.isEmpty(secretKey) || ObjectUtil.isEmpty(signStr) || ObjectUtil.isEmpty(expiredSeconds)) {
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return false;
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}
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long betweenSeconds = (System.currentTimeMillis() - timestamp) / 1000;
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// 如果当前时间和时间戳时间相隔太长，则返回校验失败，过期
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if (betweenSeconds > expiredSeconds) {
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return false;
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}
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// 正确的签名
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String signRight = TokenSignUtil.createSignStr(timestamp, secretKey);
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// 比对签名
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if (signRight.equals(signStr)) {
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return true;
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}
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return false;
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}
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}
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