Viewing profile — ekarulf

Is this just spiped with MD5 instead of HMAC-SHA256? https://www.tarsnap.com/spiped.html

SSH keys on a YubiKey

Congratulations! Talk to the charge nurse to change rooms, escalate to the admin on call if needed. Get the sleep now while you can.

I get IVIG 3x / week for a primary immune deficiency I’ve had since birth. For my dosage, it’s billed weekly at a rate of ~$32K of which my insurance company pays around ~$3K. I hi…

UNIX systems programming can be accomplished by looking at man pages and referencing kernel / user land source code. I find something cathartic writing C applications and tools. Pe…

Yes! https://www.amazon.jobs/en/jobs/433643

Just in the event someone out there is looking to work on these types of problems, Amazon's Personalization teams are absolutely hiring. Homepage: https://www.amazon.jobs/en/teams/…

Who says they can't see the URL? A sufficiently motivate government would probably be able to create forged certificates and mass interception isn't really out of the question. Esp…

I find it impossible to replace a legacy system without first understanding the legacy system. It's easy to say "X is old" or "X sucks at Y" but keep in mind that applications have…

I'm a new parent and I need to track when my son eats/poops/pees etc. There are times when my hands aren't available. I built a tiny "app" that just records these things to a googl…

It's a hard problem to determine the repeat purchase cadence of a product. At one end of the bell curve you have items re-purchased frequently, e.g. diapers or grocery, and on the …

Amazon Personalization. We use ML/Deep Learning for customer to product recommendations and product to product recommendations. For years we used only algorithms based on basic sta…

Cool! I would suggest changing the branding to "a simple job board for people with disabilities." For many people the disability is a part of who they are - it's not how they self …

"Note that we do not accept pull requests" Strange.

I was really hoping for an retrospective about a multi-armed bandit learning algorithm that ran in production but never experimented, effectively yielding a "zero-armed bandit".

Is it used to derive separate HMAC and AES keys or is the same key used in both contexts?

This is awesome. Congrats on the launch Flo :)

My discrete math and logic undergraduate course was in Coq. It was a brutal way to learn the proof process at first but it was worth the investment by the end. It's the logic equiv…

For eight years of my life, I was this "Do-Everything Rockstar." I was also a student for the majority of that time. I certainly wasn't a "programming deity" -- I was just a kid th…

I wrote a similar system for C# - we had three queues per application, work, delay, and error. In our system, the deferred queue used per-message TTLs that would push messages back…

Google's chart API also supports ssl: https://chart.googleapis.com/chart?cht=qr&chs=300x300&#3...

We use tarsnap ( http://www.tarsnap.com ) to handle our offsite backups. If you give your production servers write only keys you can mitigate this risk (and not send your backups a…