目录 0x00 Wechall writeup Training: Get Sourced Training: ASCII Encodings: URL Training: Stegano I Training: WWW-Robots Training: Crypto - Caesar I PHP 0817 Prime Factory Training: MySQL I Stegano Attachment Zebra Training: Crypto - Transposition I hi…

In a computer, you can only work with numbers.In this challenge you have to decode the following message, which is in ASCII. 84, 104, 101, 32, 115, 111, 108, 117, 116, 105, 111, 110, 32, 105, 115, 58, 32, 98, 111, 108, 102, 111, 110, 111, 105, 97, 10…

MarkdownPad Document html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label…

Training: Encodings I (Training, Encoding) We intercepted this message from one challenger to another, maybe you can find out what they were talking about. To help you on your progress I coded a small java application, called JPK. Note: The message i…

日常绝望系列 Questionnaire HDU - 6075 In order to get better results in official ACM/ICPC contests, the team leader comes up with a questionnaire. He asked everyone in the team whether to have more training.  Picture from Wikimedia Commons Obviously many p…

Questionnaire Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 422    Accepted Submission(s): 320Special Judge Problem Description In order to get better results in official ACM/ICPC contests,…

参考文章:微信公众号文章 在sql中怎么查看一个字符的ascii编码,so easy !! select ASCII('a') SELECT CHAR(97) charNum SELECT UNICODE('a') unicodeNum 结果是这样的 还有一点,Unicode编码只编码第一个 SELECT UNICODE(97) SELECT UNICODE(9)…

匹配ASCII码:   /[:ascii:]/ ASCII码转换为数字: ord() 数字转换为ASCII码: chr()…

因為開發需求,把對照表留下來一下. Chr(0) Null Chr(29) 分组符 Chr(38) & Chr(48) 0 Chr(8) 退格 Chr(30) 記錄分離符號 Chr(39) ‘ Chr(49) 1 Chr(9) Tab Chr(31) 單元分隔符號 Chr(40) ( Chr(50) 2 Chr(10) 换行 Chr(32) 空格SPACE Chr(41) ) Chr(51) 3 Chr(12) 换页 Chr(33) ! Chr(42) * Chr(52) 4 Chr(13) E…

很久很久以前,有一群人,他们决定用8个可以开合的晶体管来组合成不同的状态,以表示世界上的万物.他们看到8个开关状态是好的,于是他们把这称为"字节".再后来,他们又做了一些可以处理这些字节的机器,机器开动了,可以用字节来组合出很多状态,状态开始变来变去.他们看到这样是好的,于是它们就这机器称为"计算机". 开始计算机只在美国用.八位的字节一共可以组合出256(2的8次方)种不同的状态. 他们把其中的编号从0开始的32种状态分别规定了特殊的用途,一但终端.打印机遇上约定…