TonyHo tonyho

PGP Bootable USB Flash Drive Creation and Operation

Create a bootable USB flash drive for generating and managing PGP keys. The keys will be generated and stored, encrypted, on the drive but then also transferred to Yubikeys for general use. Unless a Yubikey is lost or damaged, use of the flash drive should be extremely limited, if it is used at all.

A master certifying and signing (CS) key will be created, then sub-key signing (S), encrypting (E), and authenticating (A) keys will be created and signed by the C key. The C key will be archived with a password to the flash drive as well as transferred to a Yubikey 4. The SE&A sub keys will also be archived to the flash drive as part of the C key

Environment

The steps shown below are done on a Ubuntu VM using Qemu 3.0

$ qemu-system-arm -version
QEMU emulator version 3.0.0
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

To quit Qemu at any time press Ctrl+a x, i.e. Ctrl+a and then x

Set the NTP server of your android device

#前言由于大家都懂的, 国内使用go get的时候, 经常会各种失败, 如果有vpn的话, 打开vpn, 问题就解决了, 但vpn其实挺不灵活的.

相对来说shadowsock则灵活得多.

#解决方案 shadowsock + Privoxy

思路就是, 使用shadowsock建立一个本地sock5代理, 但因为go get 需要http代理, 所以需要使用privoxy把sock5代理转为http代理.

Connecting to serial port (com port) over network

(Serial port or com port? - Serial ports are often refered as COM ports. It is the same to be short. You can read abut it in the Wiki article )

The problem
The solution in theory
WINDOWS
- Server
- Client

Driver Signature

Setup a Local Only SMTP Email Server (Linux, Unix, Mac)

1 - Point localhost.com to your machine

Most of programs will not accept an email using just @localhost as domain. So, edit /etc/hosts file to make the domain localhost.com point to your machine, including this content to the file:

127.0.0.1 localhost.com

	#-- encoding: utf8 --
	# Call with "python parseXML.py test.xml"
	# Tested with Python 3.5

	from tkinter import *
	from tkinter.ttk import Treeview
	import xml.etree.ElementTree as ET

	class App:

	#!/bin/bash

	# This script subscribes to a MQTT topic using mosquitto_sub.
	# On each message received, you can execute whatever you want.

	while true # Keep an infinite loop to reconnect when connection lost/broker unavailable
	do
	mosquitto_sub -h "127.0.0.1" -t "test" \| while read -r payload
	do
	# Here is the callback to execute whenever you receive a message:

	1. Execute make first. This will result in a netlinkKernel.ko output among many others.
	2. Execute $ gcc netlinkUser.c -o netlinkUser
	3. Insert kernel module by :$ sudo insmod netlinkKernel.ko
	4. Run ./netlinkUser to see message and run dmesg to see debug messages
	5. Remove module by : $ sudo rmmod netlinkKernel
	6. Finally make clean to remove output files.

	#include <stdio.h>
	#include <event.h>
	#include <stdlib.h>
	#include <string.h>
	#include <limits.h>
	#include <sys/inotify.h>

	static void displayInotifyEvent(struct inotify_event *i)
	{
	printf(" wd =%2d; ", i->wd);