Simon Tushev tushev

README

Choose a directory to be the root for this CA. All paths will be relative to it.

Create CA configuration

Create your local configuration for this CA. E.g. edit ca.conf:

[ca]

How to Generate & Use Private Keys using OpenSSL's Command Line Tool

These commands generate and use private keys in unencrypted binary (not Base64 “PEM”) PKCS#8 format. The PKCS#8 format is used here because it is the most interoperable format when dealing with software that isn't based on OpenSSL.

OpenSSL has a variety of commands that can be used to operate on private key files, some of which are specific to RSA (e.g. openssl rsa and openssl genrsa) or which have other limitations. Here we always use

Infrared and LIRC

*Beware: These instructions have been cobbled together from all of the sources I found that got my specific unit working. I can verify it works on a Pi 3B running the latest OS as of summer 2019. Everyone's hardware and system will be a bit different so your mileage may vary. Before you go crazy trying to debug issues sending a signal, grab an existing lirc config for any remote and use the lirc CLI to send a signal out and verify your hardware is sending the signal by viewing the IR LED through a front-facing smartphone camera (almost all smartphone front cameras - even new iPhones - will not filter out IR light and you should see the LED flash when sending a signal). If you see your hardware is sending a signal and/or you can see that the IR input is seeing some signal, then you know your setup works and the issue may be that the remote you're trying to learn simply won't work with LIRC. I know for a fact that many Comcast/Xfinity cable remotes are actually RF devices and need to have

	function [maxtab, mintab]=peakdet(v, delta, x)
	%PEAKDET Detect peaks in a vector
	% [MAXTAB, MINTAB] = PEAKDET(V, DELTA) finds the local
	% maxima and minima ("peaks") in the vector V.
	% MAXTAB and MINTAB consists of two columns. Column 1
	% contains indices in V, and column 2 the found values.
	%
	% With [MAXTAB, MINTAB] = PEAKDET(V, DELTA, X) the indices
	% in MAXTAB and MINTAB are replaced with the corresponding
	% X-values.

	<NotepadPlus>
	<UserLang name="Dockerfile" ext="Dockerfile" udlVersion="2.1">
	<Settings>
	<Global caseIgnored="no" allowFoldOfComments="no" foldCompact="no" forcePureLC="1" decimalSeparator="0" />
	<Prefix Keywords1="no" Keywords2="yes" Keywords3="no" Keywords4="no" Keywords5="no" Keywords6="no" Keywords7="no" Keywords8="no" />
	</Settings>
	<KeywordLists>
	<Keywords name="Comments">00# 01 02 03 04</Keywords>
	<Keywords name="Numbers, prefix1"></Keywords>
	<Keywords name="Numbers, prefix2"></Keywords>

	""" lists environment variables, and splits elements in path variable """
	import os


	for k, v in sorted(os.environ.items()):
	print(k+':', v)
	print('\n')
	# list elements in path environment variable
	[print(item) for item in os.environ['PATH'].split(';')]