标签：程序 nbsp log dts 数据 vtk nsf sms 需要
0x01起因
今天做CTF的时候，发现一堆数据，大概是这样的
data:image/jpg;base64,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
刚开始，并不知道什么东西，唯一能看懂的是最后又两个==，还有base64，确定这些事base64编码。
百度发现这是RFC2397协议。
0x02结果
Data URL scheme定义了一种新的URL数据方案。因为有些应用程序需要将一些小型的媒体数据类型直接嵌入到网页中，减少请求资源的链接数。浏览器接收到数据后解码并渲染形成图片。
格式：data:[<mediatype>][;base64],<data>
mediatype是数据的类型，分为类型和子类型。
base64是支持的编码模式
逗号后面嵌入的数据。
Data URL scheme 支持的格式：
data:,文本数据 data:text/plain,文本数据 data:text/html,HTML代码 data:text/html;base64,base64编码的HTML代码 data:text/css,CSS代码 data:text/css;base64,base64编码的CSS代码 data:text/javascript,Javascript代码 data:text/javascript;base64,base64编码的Javascript代码 data:image/gif;base64,base64编码的gif图片数据 data:image/png;base64,base64编码的png图片数据 data:image/jpeg;base64,base64编码的jpeg图片数据 data:image/x-icon;base64,base64编码的icon图片数据
标签：程序 nbsp log dts 数据 vtk nsf sms 需要
原文地址：http://www.cnblogs.com/Triomphe/p/7587607.html
