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Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

Setting up Pi Zero OTG - The quick way (No USB keyboard, mouse, HDMI monitor needed)

More details - http://blog.gbaman.info/?p=791

For this method, alongside your Pi Zero, MicroUSB cable and MicroSD card, only an additional computer is required, which can be running Windows (with Bonjour, iTunes or Quicktime installed), Mac OS or Linux (with Avahi Daemon installed, for example Ubuntu has it built in).
1. Flash Raspbian Jessie full or Raspbian Jessie Lite onto the SD card.
2. Once Raspbian is flashed, open up the boot partition (in Windows Explorer, Finder etc) and add to the bottom of the config.txt file dtoverlay=dwc2 on a new line, then save the file.
3. If using a recent release of Jessie (Dec 2016 onwards), then create a new file simply called ssh in the SD card as well. By default SSH i

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

Avoiding padding errors with Python's base64 encoding

>>> import base64
>>> data = '{"u": "test"}'
>>> code = base64.b64encode(data)
>>> code
'eyJ1IjogInRlc3QifQ=='

	# ---------------------------------------------------------------------------
	# LAS_TO_DEM_Hillshade_arc102.py
	# Created On: 09/24/2014
	# Created By: Scott Beck
	# Description: This script ouputs optionally clipped DEM from LAS directory and hillshade
	# ---------------------------------------------------------------------------

	# Import arcpy module
	import arcpy
	from arcpy.sa import *

	/**
	* C++ implementation of FFT
	*
	* Source: http://paulbourke.net/miscellaneous/dft/
	*/

	#pragma once

	/*
	This computes an in-place complex-to-complex FFT

	"""
	Original raw text:
	http://sherlock-holm.es/ascii/

	Trimmed Format:
	- Each line is a complete paragraph.
	- Each line is ended with two new line characters ('\n\n') (including the last line).
	- Disclaimer at the end of the raw text is not deleted, you need to delete it yourself.
	"""

	/*
	After purchasing a humble book bundle, go to your download page for that bundle.
	Open a console window for the page and paste in the below javascript
	*/
	$('a').each(function(i){
	if ($.trim($(this).text()) == 'MOBI') {
	$('body').append('<iframe id="dl_iframe_'+i+'" style="display:none;">');
	document.getElementById('dl_iframe_'+i).src = $(this).data('web');
	}
	});

	#!/usr/bin/python

	import nmap


	target_mac = '<Enter MAC Adress>'

	nm = nmap.PortScanner()

	nm.scan(hosts='192.168.1.0/24', arguments='-sP')

	/**
	* OpenCV video streaming over TCP/IP
	* Client: Receives video from server and display it
	* by Steve Tuenkam
	*/

	#include "opencv2/opencv.hpp"
	#include <sys/socket.h>
	#include <arpa/inet.h>
	#include <unistd.h>