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<!DOCTYPE html><html lang="en"><head><meta http-equiv="content-type" content="text/html; charset=utf-8"><meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport"><meta content="yes" name="apple-mobile-web-app-capable"><meta content="black-translucent" name="apple-mobile-web-app-status-bar-style"><meta content="telephone=no" name="format-detection"><meta name="description" content=""><title>xiaoZ's Blog | Try My Best</title><link rel="stylesheet" type="text/css" href="/css/style.css?v=0.0.0"><link rel="stylesheet" type="text/css" href="//lib.baomitu.com/normalize/8.0.1/normalize.min.css"><link rel="stylesheet" type="text/css" href="//lib.baomitu.com/pure/1.0.0/pure-min.css"><link rel="stylesheet" type="text/css" href="//lib.baomitu.com/pure/1.0.0/grids-responsive-min.css"><link rel="stylesheet" href="//lib.baomitu.com/font-awesome/4.7.0/css/font-awesome.min.css"><script type="text/javascript" src="//lib.baomitu.com/jquery/3.4.0/jquery.min.js"></script><link rel="icon" mask="" sizes="any" href="/favicon.ico"><link rel="Shortcut Icon" type="image/x-icon" href="/favicon.ico"><link rel="apple-touch-icon" href="/apple-touch-icon.png"><link rel="apple-touch-icon-precomposed" href="/apple-touch-icon.png"><link rel="alternate" type="application/atom+xml" href="/atom.xml"><meta name="generator" content="Hexo 4.1.1"></head><body><div class="body_container"><div id="header"><div class="site-name"><h1 class="hidden">xiaoZ's Blog</h1><a id="logo" href="/.">xiaoZ's Blog</a><p class="description">Try My Best</p></div><div id="nav-menu"><a class="current" href="/."><i class="fa fa-home"> Home</i></a><a href="/archives/"><i class="fa fa-archive"> Archive</i></a><a href="/about/"><i class="fa fa-user"> About</i></a><a href="/atom.xml"><i class="fa fa-rss"> RSS</i></a></div></div><div class="pure-g" id="layout"><div class="pure-u-1 pure-u-md-3-4"><div class="content_container"><div class="post"><h1 class="post-title"><a href="/2020/12/26/%E7%AE%97%E6%B3%95%E5%88%86%E6%9E%90%E5%85%B8%E5%9E%8B%E4%BE%8B%E9%A2%98/">算法分析典型例题</a></h1><div class="post-meta">2020-12-26</div><a class="disqus-comment-count" data-disqus-identifier="2020/12/26/算法分析典型例题/" href="/2020/12/26/%E7%AE%97%E6%B3%95%E5%88%86%E6%9E%90%E5%85%B8%E5%9E%8B%E4%BE%8B%E9%A2%98/#disqus_thread"></a><div class="post-content">关于算法分析的一些例题，主要前段时间有重温一下算法中时间复杂度的计算，因此也记录了一些简单的例题，比较基础，但是也做个记录吧。</div><p class="readmore"><a href="/2020/12/26/%E7%AE%97%E6%B3%95%E5%88%86%E6%9E%90%E5%85%B8%E5%9E%8B%E4%BE%8B%E9%A2%98/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2020/09/11/%E7%BE%8A%E5%9F%8E%E6%9D%AF2020-WP/">羊城杯2020-WP</a></h1><div class="post-meta">2020-09-11</div><a class="disqus-comment-count" data-disqus-identifier="2020/09/11/羊城杯2020-WP/" href="/2020/09/11/%E7%BE%8A%E5%9F%8E%E6%9D%AF2020-WP/#disqus_thread"></a><div class="post-content">这比赛打得揪心，被jiaoshi是真的难受...而且还不停有人这样，前一晚刚刚爆完肝，被这么一整明显感觉自己精神状况有问题。</div><p class="readmore"><a href="/2020/09/11/%E7%BE%8A%E5%9F%8E%E6%9D%AF2020-WP/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2020/08/28/%E9%A6%96%E5%B1%8A%E9%92%93%E9%B1%BC%E5%9F%8E%E6%9D%AF%E9%83%A8%E5%88%86wp/">首届钓鱼城杯部分wp</a></h1><div class="post-meta">2020-08-28</div><a class="disqus-comment-count" data-disqus-identifier="2020/08/28/首届钓鱼城杯部分wp/" href="/2020/08/28/%E9%A6%96%E5%B1%8A%E9%92%93%E9%B1%BC%E5%9F%8E%E6%9D%AF%E9%83%A8%E5%88%86wp/#disqus_thread"></a><div class="post-content">这比赛打的想剁手,seed那题一直在猜怎么提交，最开始猜到了因为xff拼错了耽误了好久23333，以至于最后zblog没时间解了</div><p class="readmore"><a href="/2020/08/28/%E9%A6%96%E5%B1%8A%E9%92%93%E9%B1%BC%E5%9F%8E%E6%9D%AF%E9%83%A8%E5%88%86wp/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2020/05/26/HTTP-Smuggling-%E8%AF%B7%E6%B1%82%E8%B5%B0%E7%A7%81/">HTTP_Smuggling-请求走私</a></h1><div class="post-meta">2020-05-26</div><a class="disqus-comment-count" data-disqus-identifier="2020/05/26/HTTP-Smuggling-请求走私/" href="/2020/05/26/HTTP-Smuggling-%E8%AF%B7%E6%B1%82%E8%B5%B0%E7%A7%81/#disqus_thread"></a><div class="post-content">前几天打的 defcon ctf qual 里有一题 uploooadit ，里面涉及到 HTTP Smuggling | HTTP Desync Attacks ,也就是 HTTP走私攻击，是一个很有趣的攻击方式了，而这个其实也和自己正在弄的协议一致性研究有所关联，于是参考了些论文和一些师傅的博客，回顾一下，并做个记录。</div><p class="readmore"><a href="/2020/05/26/HTTP-Smuggling-%E8%AF%B7%E6%B1%82%E8%B5%B0%E7%A7%81/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2020/05/22/Defcon-CTF-Qual-2020-Web-WP/">Defcon_CTF_Qual_2020-Web-WP</a></h1><div class="post-meta">2020-05-22</div><a class="disqus-comment-count" data-disqus-identifier="2020/05/22/Defcon-CTF-Qual-2020-Web-WP/" href="/2020/05/22/Defcon-CTF-Qual-2020-Web-WP/#disqus_thread"></a><div class="post-content">打了一波defcon qual，不愧为CTF的殿堂级比赛，还是学到了很多新东西的。</div><p class="readmore"><a href="/2020/05/22/Defcon-CTF-Qual-2020-Web-WP/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2020/05/13/%E7%BD%91%E9%BC%8E%E6%9D%AF2020-%E9%9D%92%E9%BE%99%E7%BB%84-%E9%83%A8%E5%88%86WP/">网鼎杯2020-青龙组-部分WP</a></h1><div class="post-meta">2020-05-13</div><a class="disqus-comment-count" data-disqus-identifier="2020/05/13/网鼎杯2020-青龙组-部分WP/" href="/2020/05/13/%E7%BD%91%E9%BC%8E%E6%9D%AF2020-%E9%9D%92%E9%BE%99%E7%BB%84-%E9%83%A8%E5%88%86WP/#disqus_thread"></a><div class="post-content">一次体验不太好的比赛，web题环境容易崩，所以做着做着搞其他题去了，不过也还好整出点题目。但是可能这比赛py太多，最后还是没能进线下。</div><p class="readmore"><a href="/2020/05/13/%E7%BD%91%E9%BC%8E%E6%9D%AF2020-%E9%9D%92%E9%BE%99%E7%BB%84-%E9%83%A8%E5%88%86WP/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2019/12/22/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%AF%86%E7%A0%81%E7%A1%AC%E4%BB%B6%E5%AE%89%E5%85%A8/">密码学学习-密码硬件安全</a></h1><div class="post-meta">2019-12-22</div><a class="disqus-comment-count" data-disqus-identifier="2019/12/22/密码学学习-密码硬件安全/" href="/2019/12/22/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%AF%86%E7%A0%81%E7%A1%AC%E4%BB%B6%E5%AE%89%E5%85%A8/#disqus_thread"></a><div class="post-content">对密码硬件安全的简要介绍，主要包含密码硬件安全等级与侧信道攻击种类的介绍和说明。</div><p class="readmore"><a href="/2019/12/22/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%AF%86%E7%A0%81%E7%A1%AC%E4%BB%B6%E5%AE%89%E5%85%A8/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2019/10/25/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%88%86%E7%BB%84%E5%AF%86%E7%A0%81/">密码学学习-分组密码</a></h1><div class="post-meta">2019-10-25</div><a class="disqus-comment-count" data-disqus-identifier="2019/10/25/密码学学习-分组密码/" href="/2019/10/25/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%88%86%E7%BB%84%E5%AF%86%E7%A0%81/#disqus_thread"></a><div class="post-content">对于分组密码的介绍，主要涵盖一些常见的分组密码构造，如Feistel和SPN结构，以及常用的分组密码算法（DES/AED/SM4）和模式（CBC/CFB/ECB/OFB/CTR）。</div><p class="readmore"><a href="/2019/10/25/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-%E5%88%86%E7%BB%84%E5%AF%86%E7%A0%81/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2019/10/20/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-MAC%E4%B8%8EAEAD/">密码学学习-MAC与AEAD</a></h1><div class="post-meta">2019-10-20</div><a class="disqus-comment-count" data-disqus-identifier="2019/10/20/密码学学习-MAC与AEAD/" href="/2019/10/20/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-MAC%E4%B8%8EAEAD/#disqus_thread"></a><div class="post-content">这一篇主要是对消息认证码(MAC)和AEAD的介绍，涵盖一些常见模式的原理和结构，其中在MAC算法中主要对HMAC进行介绍，并从AE到AEAD的整个过程对AEAD进行介绍。</div><p class="readmore"><a href="/2019/10/20/%E5%AF%86%E7%A0%81%E5%AD%A6%E5%AD%A6%E4%B9%A0-MAC%E4%B8%8EAEAD/">Read More</a></p></div><div class="post"><h1 class="post-title"><a href="/2019/10/17/%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%9F%BA%E7%A1%80/">正则表达式基础</a></h1><div class="post-meta">2019-10-17</div><a class="disqus-comment-count" data-disqus-identifier="2019/10/17/正则表达式基础/" href="/2019/10/17/%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%9F%BA%E7%A1%80/#disqus_thread"></a><div class="post-content">很久之前便接触过正则，也用过不少，但是也从来没自己系统性总结下，反而每次都是去搜索别人的博客，突发奇想问了下CTF队伍中同学是否常使用正则表达式，发现还是挺重要的，也想对这块进行一些系统性的总结，涉及的内容可能会比较浅，会尽量通俗易懂，结合例子让读者更能理解。</div><p class="readmore"><a href="/2019/10/17/%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%9F%BA%E7%A1%80/">Read More</a></p></div><nav class="page-navigator"><span class="page-number current">1</span><a class="page-number" href="/page/2/">2</a><a class="extend next" rel="next" href="/page/2/">Next</a></nav><script id="dsq-count-scr" src="//xiaoZz.disqus.com/count.js" async></script></div></div><div class="pure-u-1-4 hidden_mid_and_down"><div id="sidebar"><div class="widget"><div class="widget-title"><i class="fa fa-folder-o"> Categories</i></div><ul class="category-list"><li class="category-list-item"><a class="category-list-link" 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