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Home page
Personal blog · gkbrk.comprogrammingsecurity
Home page is a personal blog at gkbrk.com about programming and security. Since 2016, 30 different Hacker News readers have linked it 52 times, most often “Fetching ActivityPub Feeds”. No feed was found, so read it on the site itself.
Too few sampled comments (3) to say how often HN recommends it.?
Why HN links it
Commenters link its posts on Android dialer network packets, a lolcat clone written in 64-bit assembly, and a caffeine half-life reference. The comments themselves don't judge the writing.
Summarised by Claude from a sample of 3 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- Fetching ActivityPub Feeds3 people · 3 mentions · first linked 2018-06-19
- Android Dialers Are Stealing Your Data3 people · 3 mentions · first linked 2017-05-15
- Lolcat Clone in x64 Assembly2 people · 2 mentions · first linked 2016-07-27
- Spectrogram Drawing2 people · 2 mentions · first linked 2022-04-05
- Reverse engineering a mysterious UDP stream in my hotel (2016)2 people · 2 mentions · first linked 2021-03-30
- Plaintext Budgeting2 people · 2 mentions · first linked 2019-04-04
- Explaining Ed2 people · 2 mentions · first linked 2016-08-02
- Tampermonkey is not Open Source (2019)2 people · 2 mentions · first linked 2019-09-05
- Caffeine Half-Life Calculator2 people · 2 mentions · first linked 2023-07-26
- Reverse Engineering a Mysterious UDP Stream in My Hotel (2016)2 people · 2 mentions · first linked 2018-01-21
What Hacker News says?
And have all of the security issues that go along with it.... https://gkbrk.com/2017/05/android-dialer-packets/
Comment linking /2017/05/android-dialer-packets/
on “Apple's best product is now privacy”Submitted Reverse engineering a mysterious UDP stream in my hotel (2016) as a story · 504 points
HN discussionMy blog is at https://www.gkbrk.com and I have a small personal wiki at https://www.gkbrk.com/wiki/ . My content is mainly about reverse engineering, network protocols, amateur radio stuff and cryptography.
Comment linking /wiki/
on “Ask HN: Share your personal site”Submitted Free Hotel Wifi with Python and Selenium as a story · 327 points
HN discussionI started displaying a banner on my website [1] a while back for visitors using Chrome/Chromium telling them to "give Firefox a try for the future of the open web". I don't know how many people came across that or clicked the link, as I don't track that, but I enjoy doing my tiny part in letting people know. [1]: https://www.gkbrk.com
Comment linking /
on “DuckDuckGo Extension to Block FLoC, Google’s New Tracking Method in Chrome”Submitted Reverse Engineering a Mysterious UDP Stream in My Hotel (2016) as a story · 266 points
HN discussionThis same guy written has a lolcat in 64 bit assembly. https://gkbrk.com/2016/07/lolcat-clone-in-x64-assembly/
Comment linking /2016/07/lolcat-clone-in-x64-assembly/
on “Reverse Engineering a Mysterious UDP Stream in My Hotel (2016)”Submitted Constructing a sponge function from MD5 as a story · 15 points
HN discussionThis looks like a windows only app, here's another source, that runs on the browser. https://www.gkbrk.com/wiki/caffeine-halflife/ . Not affiliated, I just use it Also, Smokers metabolise caffeine faster. https://pubmed.ncbi.nlm.nih.gov/657717/
Comment linking /wiki/caffeine-halflife/
on “Coffee Stats – Maximize Caffeine Intake and Get to Bed at Night”Submitted Why Refback Still Matters as a story · 14 points
HN discussionI've done something similar recently; but instead of grabbing data from my bank, I chose to enter data manually from receipts. This makes it work for both cash and debit payments, and doesn't need any maintenance for API breakage. I find doing this data entry calming, to be honest. I wrote about it here https://gkbrk.com/2019/04/plaintext-budgeting/
Comment linking /2019/04/plaintext-budgeting/
on “I got control of my spending with some no-code services and 100 lines of Python”Submitted Reverse Engineering a Mysterious UDP Stream in My Hotel as a story · 9 points
HN discussionDon't roll your own crypto if you are releasing a product or if you are working on critical software. DO roll your own crypto [1] for learning, messing around if you enjoy recreational programming. It's an awesome topic to play with and rolling your own crypto can give you an appreciation for the solid algorithms that survived being cracked for a long time. It is very sad there there are corners of computer science…
Comment linking /2020/03/encryption/
on “Crackpot Cryptography and Security Theater”Submitted Writing a simple IPFS crawler in Rust as a story · 7 points
HN discussionI've also been playing around with bit mixers and hash functions recently. I use avalanche diagrams to visually inspect the diffusion, and SSE (sum of squared errors) to compare the bias of different mixers. https://www.gkbrk.com/wiki/avalanche-diagram/ I guess the next step is to evolve / optimize good constants to improve them further, and rewrite everything in C to make evaluation faster.
Comment linking /wiki/avalanche-diagram/
on “The Construction of Bit Mixers”Submitted Mastodon Bot in Common Lisp as a story · 5 points
HN discussionI use a plaintext double-entry system now. Wrote a small Python script to parse it as well. I put the code up here [1]. Before that, I was using SQLite with a shell script for a while to keep track of my expenses, code here [2]. [1]: https://github.com/gkbrk/scripts/blob/master/ledger.py [2]: https://www.gkbrk.com/2019/04/plaintext-budgeting/
Comment linking /2019/04/plaintext-budgeting/
on “Ask HN: What personal finance tools do you use?”Submitted Fetching ActivityPub Feeds as a story · 5 points
HN discussionYou can also put a DuckDuckGo search box, works well for website search and supports DDG instead of Alphabet. EDIT: Shameless plug if it gets the author to go with a non-google option https://www.gkbrk.com/wiki/DuckDuckGoSearchBox/
Comment linking /wiki/DuckDuckGoSearchBox/
on “Ask HN: Can you borrow Googles search algorithm?”Submitted Numerical Domains of China as a story · 5 points
HN discussionI have an old and unfinished article [1] that uses geohash / quadtiles to implement the same thing. If your goal isn't "every location on Earth", you have a smaller bounding box (like a country or "all of Europe") and this will result in the squares being more precise, or the identifiers or word lists being shorter. Could be worth the trade-off depending on the requirements. [1]: https://www.gkbrk.com/wiki/Quadtiles…
Comment linking /wiki/Quadtiles-full/
on “Unique 3-word identifiers for every 3 meter square on Earth”Submitted Reverse Engineering a Mysterious UDP Stream in My Hotel (2016) as a story · 4 points
HN discussionhttps://www.gkbrk.com I write about a variety of topics including reverse engineering, amateur radio, digital signal processing, cryptography, machine learning, IT security etc. Just a static site built with Jekyll, along with some custom Jekyll plugins.
Comment linking /
on “Ask HN: Could you share your personal blog here?”Submitted Port 17: Quote of the Day Protocol as a story · 4 points
HN discussionSubmitted Tampermonkey is not Open Source (2019) as a story · 3 points
HN discussionSubmitted Gopher Server in Rust as a story · 3 points
HN discussionSubmitted Fetching ActivityPub Feeds as a story · 3 points
HN discussionSubmitted Android Dialers Are Stealing Your Data as a story · 3 points
HN discussionSubmitted Reverse Engineering a Mysterious UDP Stream in My Hotel as a story · 2 points
HN discussionSubmitted Giving search engines a fair access to data as a story · 2 points
HN discussion
