On encryption

February 3rd, 2015

I should apologise that this blog is not (currently) served over https. It’s on my to-do list, but that list is pretty stupidly long. (As an aside I don’t look forward to the day when I have nothing to do. The idea of just putting my feet up is horrible. It feels like I’ve had at least 50% more things to do than I have time to do since about 2007; but the upshot is that I genuinely don’t think I’ve been bored once in the last 7 years.)

Anyway, recent comments by Phil Zimmermann – the creator of email encryption software PGP – struck me as particularly (if unsurprisingly) smart. The upshot is yet another timely argument against David Cameron’s frankly embarrassing stance on end-to-end encryption: Hackers are always going to be able to get around whatever security you put up, but if your data is properly encrypted it doesn’t matter if they get access to your servers. So those Sony emails and movie scripts, for example, would never have been leaked if they’d been stored encrypted.

This article is worth a read, as is Phil’s original blog post.

In related news, BWM recently patched their ConnectedDrive software after a flaw was identified by a third party. The shocking part of the story is that prior to this patch the software was using unencrypted plain text HTTP to send and receive data! Given that the software operates door locks (among other functions) it is mind-boggling to me that its developers didn’t choose HTTPS in the first place.

A culture of ‘encrypt by default’ needs to be instilled.

How Bitcoin Works

December 4th, 2013

Fascinating and more than a bit clever, if you’ll excuse the pun.

Interesting lecture and Q&A from ‘21st century Brunel’ Elon Musk. Predictably he covers SolarCity, Tesla and SpaceX, though the Q&A is more interesting, covering energy storage, rocket airframe construction, reusability and manned flights to Mars. He also briefly mentions his tantalising Hyperloop concept.

Feats of Engineering

April 7th, 2013

How Differential Steering Works (1937), and Diesel Engine Governors (1942): Two brilliant videos explaining these triumphs of mechanical engineering, which we today take for granted.

The pneumatic speed governor system is akin to a realtime monitoring and feedback computer program, only constructed with steel and oil instead of digital code – and all the more impressive for it.

Thanks to @jedrichards on Twitter for bringing these to my attention.