zousandian

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

Linux 命令行编辑快捷键

初学者在Linux命令窗口（终端）敲命令时，肯定觉得通过输入一串一串的字符的方式来控制计算是效率很低。但是Linux命令解释器（Shell）是有很多快捷键的，熟练掌握可以极大的提高操作效率。下面列出最常用的快捷键，这还不是完全版。

命令行快捷键：
- 常用：
  - Ctrl L ：清屏
Ctrl M ：等效于回车

NodeJS Streams

Current implementation is known as streams2.
Introduced in node v0.10.
"suck" streams instead of "spew" streams.
Instead of data events spewing, call read() to pull data from source.
When there isn't any data to consume, then read() will return undefined.
Adding a data event listener will switch the Readable stream into "old mode", where data is emitted as soon as it is available rather than waiting for you to call read() to consume it. This requires you to handle backpressure problems manually.
The pipe method helps write less code and handles back-pressure.
If you add an end listener and don't ever read() or pipe(), it'll never emit end.

Deploying a subfolder to GitHub Pages

Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.

For the sake of this example, let’s pretend the subfolder containing your site is named dist.

Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

	"use strict";
	const net = require("net");
	const port = 4000;
	var time, times = [];

	function now() {
	let hrtime = process.hrtime();
	return hrtime[0] * 1e9 + hrtime[1];
	}

	<!-- test pass with CryptoJS v3.1.2 -->
	<script src="rollups/tripledes.js"></script>
	<script src="components/mode-ecb.js"></script>
	<script>
	/**
	* Encrypt message by DES in ECB mode and Pkcs7 padding scheme
	*
	* NOTE: DES is weak, please use 3DES(Triple DES) or AES
	*
	* @param {String} message

	@startuml
	' uncomment the line below if you're using computer with a retina display
	' skinparam dpi 300
	!define Table(name,desc) class name as "desc" << (T,#FFAAAA) >>
	' we use bold for primary key
	' green color for unique
	' and underscore for not_null
	!define primary_key(x) <b>x</b>
	!define unique(x) <color:green>x</color>
	!define not_null(x) <u>x</u>

	var CryptoJS = require('crypto-js')
	var request = require('request-promise')

	/*
	* npm install crypto-js request-promise request
	* node wx_t1t_hack.js
	*/

	// export function testEncription(msg, fullKey) {
	// var fullKey = fullKey.slice(0, 16)

	#!/usr/bin/env python2

	# lrdcq
	# usage python2 unwxapkg.py filename

	import sys, os
	import struct

	class WxapkgFile(object):
	nameLen = 0