bloc97

Two Fast Methods of Generating True Random Numbers on the Arduino

Arduino true random number generator

B. Peng

December 2017

Abstract

The AVR series microcontrollers are a collection of cheap and versatile chips that are used in many applications ranging from hobbist projects to commercial infrastructure. One major problem for some hobbists is the lack of secure random number generation on the Arduino platform. The included pseudo-random number generator (PRNG) is very easy to defeat and is useless for any crypto-related uses. One recommendation from the Arduino Reference Manual is to use atmospheric noise from the chip's analog sensor pins as seed data^[6].
Unfortunately this method is extremely weak and should not be used to emulate a true random number generator (TRNG). Existing methods such as using the internal timer drift or using a dedicated generator are either too slow, requires extensive external hardware or modifications to the microcontroller's internal mech

tomysmile

type below:

brew update
brew install redis

To have launchd start redis now and restart at login:

brew services start redis

hsiboy

//	FUNCTION-BASED ANIMATION SEQUENCES FOR WS2812 LED STRIPS
//	Using FastLED library
//  	Author: Dave Morris:	http://www.google.com/+DaveMorris128
//	Version 1.0 (2014-07-31)
//
//
//  	The following code includes "primitive animations" which are the base effect and
//	"aggregate animations" which are combinations of one or more primitive animations
//	Feel free to combine different primitives each loop for synergistic results but:
//		-If using an aggregate animation make sure your primatives don't clear the buffer each frame (FastLED.clear())

jasny

<?php
    /**
     * Turn all URLs in clickable links.
     * 
     * @param string $value
     * @param array  $protocols  http/https, ftp, mail, twitter
     * @param array  $attributes
     * @return string
     */
    public function linkify($value, $protocols = array('http', 'mail'), array $attributes = array())

dalethedeveloper

#!/bin/bash

# http://www.ivorde.ro/How_to_backup_all_mysql_databases_with_one_command-51.html
# http://bash.cyberciti.biz/backup/backup-mysql-database-server-2/
# http://sgowtham.net/blog/2008/04/04/backing-up-and-restoring-mysql-databases/
# Requires: http://s3tools.org/s3cmd

MyUSER="YOUR-USERNAME"
MyPASS="YOUR-PASSWORD"
MyHOST="localhost"