Footnotes Archive

libhasp: Repurposing a copy-protection dongle for general-purpose data storage

Way back in 2004, I spied an offer in Circuit Cellar magazine for a free evaluation kit from Aladdin Knowledge Systems (AKS), manufacturer of copy protection tokens. These are the little gadgets that you often need to plug in to your computer to prove that you ”really” own the particularly expensive application you’re trying to [...]

Sending data via cellular voice connections with Linux

“A5/1 [the encryption scheme used in most cellular voice calls] has operated unchanged for the last 21 years but it has now reached its cryptographic end-of-life, engulfed by the march of Moore’s Law. However, the operational end-of-life of A5/1 may still be decades away as there are approximately 2 billion GSM subscribers, commanding about 80% of [...]

Secure browser-based communications

Introduction I’ve often wanted to securely send a message to someone who didn’t have a serious software package like GPG installed. Rather than ask them to install software they might not use ever again, I employed the scheme described below – it only requires a web browser with Javascript support. Our friends Alice and Bob [...] is is a stripped-down file-hosting service (cf. that has four “new-to-me” features:2 You can earn money when people download your files via their affiliate program. Your audience can access your files via HTTPS. An honest dedication to free speech and free software. You can upload your files via FTP-over-explicit-SSL (FTPES). Their support page doesn’t list [...]

ShmooCon 2009

Having last attended Shmoocon in 2007, I was glad to see that all the things that made it great ”then” were still present for the 2009 installment: A close-knit community feel. The Shmoo Group’s prolific members are very active in the infosec community and appear to unite many disparate groups within it. The freedom to [...]

Tulsa road trip day #2

I had a nice leisurely morning today – waffles, some meditation, and a swim in the hotel’s pool. I like this pace. After a ham sandwich lunch, I listened to Jules Verne’s “Around the World in Eighty Days”1 as recommended by John Udell in an insightful piece about trying to sip from the firehose. The snow [...]

Tulsa road trip begins

I coaxed my iron horse onto the road today at 5pm. Packing for a month of travel took a bit longer than I expected `:]` I plan to… Visit my sister and Jared in Tulsa. Check out a school and meet up with some folks in Denver. Potentially visit Sioux City and Omaha. Jet back [...]