Harbor in Höfn, Iceland.

Bob's Blog

Random Thoughts on Various Topics

I'm Bob, I have this site on a broad mix of topics including travel, Linux and other open-source projects, cybersecurity, and networking, plus an entire other website containing oddly specialized travel pictures and commentary.

This collection of essays or musings or rants or what-not will include content related to those topics, and content without an obvious home on either site.

Cybersecurity certifications require annual "continuing education" or "contributions to the industry", and a "professional blog" counts. Blame the greedy companies selling certifications, because they impose these requirements hoping that you will pay them for annual training courses.


What's the Point of Asymmetric Encryption?
Asymmetric encryption is often described as useful for "small messages", but that's misleading. They're only applied to symmetric keys and hash values, strings of no more than a few hundred bits.