the-vampiire

Client-side SSL

For excessively paranoid client authentication.

Updated Apr 5 2019:

because this is a gist from 2011 that people stumble into and maybe you should AES instead of 3DES in the year of our lord 2019.

some other notes:

Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.

Method 1

Backup the public and secret keyrings and trust database

cp ~/.gnupg/pubring.gpg /path/to/backups/
cp ~/.gnupg/secring.gpg /path/to/backups/
cp ~/.gnupg/trustdb.gpg /path/to/backups/

or, instead of backing up trustdb...

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

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.

Directory structure for JavaScript/Node Projects

While the following structure is not an absolute requirement or enforced by the tools, it is a recommendation based on what the JavaScript and in particular Node community at large have been following by convention.

Beyond a suggested structure, no tooling recommendations, or sub-module structure is outlined here.

Directories

lib/ is intended for code that can run as-is
src/ is intended for code that needs to be manipulated before it can be used

	// (c) copyright unscriptable.com / John Hann
	// License MIT
	// For more robust promises, see https://github.com/briancavalier/when.js.

	function Promise () {
	this._thens = [];
	}

	Promise.prototype = {

	/*
	Assuming you have an enum type like this.
	You want to rename 'pending' to 'lodged'
	*/
	CREATE TYPE dispute_status AS ENUM('pending', 'resolved', 'open', 'cancelled');

	BEGIN;

	ALTER TYPE dispute_status ADD VALUE 'lodged';
	UPDATE dispute SET status = 'lodged' WHERE status = 'pending';

	###################
	# compiled source #
	###################
	*.com
	*.class
	*.dll
	*.exe
	*.pdb
	*.dll.config
	*.cache

	#add 'node_modules' to .gitignore file

	git rm -r --cached node_modules
	git commit -m 'Remove the now ignored directory node_modules'
	git push origin <branch-name>

	var data = "do shash'owania";
	var crypto = require('crypto');
	crypto.createHash('md5').update(data).digest("hex");