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Keys

Multiple keys must be generated to get the final master key.

Generate the composite key.
Generate the transformed key from the composite key.
Generate the master key from the transformed key.

Keepass file format explained

I’m currently working (I’m just at the beginning, and I’m quite slow) on a personal project that will use Keepass files (kdb and kdbx).
I tried to find some documentation about .kdb and .kdbx format, but I didn’t find anything, even in the Keepass official website. I you want to know how these file formats are structured, you must read Keepass’s source code. So I wrote this article that explains how Keepass file format are structured, maybe it will help someone.

Network Isolation of Services with Systemd

Network namespaces are an important component of containerization in Linux. A network namespace (netns) allows a running process to see different network interfaces, routes, and firewall rules from the rest of the system. There are a number of use cases for network namespaces, such as running multiple servers, testing/staging environments and providing isolation of services.

Creating a Network Namepsace

We begin by creating a generic systemd service for creating a named network namespace. I add the following to /usr/lib/systemd/system/netns@.service. In systemd, the @ mean the service takes a parameter which is passed to the unit via %i. E.g, we can run sudo systemctl start netns@webserver.service.

	ּ_בּ
	בּ_בּ
	טּ_טּ
	כּ‗כּ
	לּ_לּ
	מּ_מּ
	סּ_סּ
	תּ_תּ
	٩(×̯×)۶
	٩(̾●̮̮̃̾•̃̾)۶

	* g o a t s e x * g o a t s e x * g o a t s e x *
	g g
	o / \ \ / \ o
	a\| \| \ \| \| a
	t\| `. \| \| : t
	s` \| \| \\| \| s
	e \ \| / / \\\ --__ \\ : e
	x \ \/ _--~~ ~--__\| \ \| x
	* \ \_-~ ~-_\ \| *
	g \_ \ _.--------.______\\| \| g

	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>

	#ifndef BUFFER
	#define BUFFER 4096
	#endif
	uint8_t msg[BUFFER];

	/* CRC-32, eg. ethernet */

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width,initial-scale=1">
	<title>title</title>
	<link rel="stylesheet" href="style.css">
	<script src="script.js"></script>
	</head>
	<body>

	"use strict";

	/*
	tumblr-downloader.js - a Node.js script to download all media files posted in
	a Tumblr blog, most recent first.

	Usage:
	node tumblr-downloader.js

	Options - domain to download from, API key, and so on - are exposed below.

	-- happy avril 14th :)))))))))))))))))))))))))))))))))))))))

	do
	let bars = 4
	key = "8"
	righthand = "[[4 -3] [0 _ _ _ _ _ 0]] [[-3, -8] [7 5 4 0]]"
	lefthand = "[0 9 12 16] [4 12 16 19] [5 12 17 19] [2 12 17 16]"
	d1 $ slow bars
	$ stack [
	n (righthand + key + "<24 36>/2"),