Words, code, and information security in Portland, Oregon
This is the website of Erik L. Arneson. I am a freelance writer and software developer in Portland, Oregon.
- Read more about me or enjoy my blog posts listed below.
If you give presentations often, you will know that one of the biggest headaches is managing slides. You have to figure out software, hardware, and connectors. I’ve usually resorted to bringing a USB thumb drive with my slides in PDF and ODP format, but then I came across an even better idea: the Raspberry Pi Zero W (or RPi0W).
Driftwood Public Library is great! I had a wonderful time in Lincoln City speaking about secret societies and cryptography. Links to my slides are below.
Raspberry Pis are super cool. One of the neat things about them is that they have a ton of general purpose input/output (GPIO) pins, so you can use them to control all sorts of external devices. Unfortunately, most of the examples and applications are written in Python. I know, a lot of people really love Python, but it’s just not my cup of tea.
My talk at OMSI last night, “Computers and the Dawn of Modern Cryptography,” went really well. It was a great crowd and there was a good Q&A session afterwards. I’m going to keep this post really brief. First, there will be slides for my talk. Following that will be a brief bibliography if you’re interested in learning more about this fascinating topic.
On March 28th, I will be giving a lecture called “Computers and the Dawn of Modern Cryptography” at OMSI as part of their Science on Screen program. I’ll be speaking and answering questions just before a screening of The Imitation Game, starring Benedict Cumberbatch and Keira Knightley. I am really excited about this opportunity! Please come down to OMSI for an informative lecture and an excellent film.
This past Fall, a bunch of big names removed StartCom from their trusted SSL Certificate Authority list. As a result, when I renewed my SSL certificates this year, I went with Let’s Encrypt. It was a pleasant experience, because Let’s Encrypt uses a command-line client called Certbot that does most of the heavy lifting for you.
Ansible is a powerful IT automation tool with lots of modules and active development. Unfortunately, the only version available for stock Raspberry Pi is old. I wanted to use some of the newer modules and features, so I needed to install at least version 2.2. This tutorial will walk you through installing Ansible 2.2.0 on a Raspberry Pi running Raspbian “jessie”. The version of Raspbian I did this on was tagged “2016-09-23”.
Nette is a popular web application framework for PHP. It is mostly pretty well documented and easy to use. Recently, I needed to upload media from a Nette application to Amazon S3. This is how I created an S3 service for my Nette application. You will need to be familiar with Nette and have an existing Nette application to follow along.
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