Terminals should generate the 256-color palette from the user's base16 theme.
If you've spent much time in the terminal, you've probably set a custom base16 theme. They work well. You define a handful of colors in one place and all your programs use them.
The drawback is that 16 colors is limiting. Complex and color-heavy programs struggle with such a small palette.
Hanging out in subtitling and video re-editing communities, I see my fair share of novice video editors and video encoders, and see plenty of them make the classic beginner mistakes when it comes to working with videos. A man can only read "Use Handbrake to convert your mkv to an mp4 :)" so many times before losing it, so I am writing this article to channel the resulting psychic damage into something productive.
If you are new to working with videos (or, let's face it, even if you aren't), please read through this guide to avoid making mistakes that can cost you lots of time, computing power, storage space, or video quality.
| Latest versions of these scripts are available in git repository https://github.com/jcmvbkbc/esp32-linux-build |
Here's the scenario: We want to craft two different messages with the same MD5 hash, and a specific CRC32 checksum, simultaneously.
In other words, we want an MD5 collision attack and a CRC32 preimage attack.
This might seem like a contrived scenario, but it's exactly the one I faced while producing my PNG hashquine (Yes OK maybe that's also a contrived scenario, cut me some slack).
On its own, a CRC32 preimage attack is trivial. You can craft a 4-byte suffix that gives any message a specific checksum, calculated using a closed-form expression (which I am too lazy to derive, not even with assistance from Z3). It's not an attack per-se, since CRC32 was never meant to be cryptograpically secure in the first place.
| import math | |
| class Var: | |
| def __init__(self, val: float, local_gradients=()): | |
| self.val = val | |
| self.local_gradients = local_gradients | |
| self.grad = 0 | |
| def backward(self, path_value: float = 1): | |
| for child_var, local_gradient in self.local_gradients: |
| This is free and unencumbered software released into the public domain. | |
| Anyone is free to copy, modify, publish, use, compile, sell, or | |
| distribute this software, either in source code form or as a compiled | |
| binary, for any purpose, commercial or non-commercial, and by any | |
| means. | |
| In jurisdictions that recognize copyright laws, the author or authors | |
| of this software dedicate any and all copyright interest in the | |
| software to the public domain. We make this dedication for the benefit |
| sub cloud_moomin { | |
| set resp.http.moomin00 = " %1b[38;5;237m▄%1b[38;5;235m▄%1b[49m"; | |
| set resp.http.moomin01 = " %1b[38;5;237m▄%1b[48;5;237m%1b[38;5;249m▄%1b[38;5;236m▄%1b[49m %1b[48;5;239m%1b[38;5;16m▄%1b[48;5;237m%1b[38;5;253m▄%1b[38;5;247m▄%1b[48;5;234m%1b[38;5;16m▄%1b[49m"; | |
| set resp.http.moomin02 = " %1b[38;5;233m▄%1b[48;5;253m%1b[38;5;237m▄%1b[48;5;254m%1b[38;5;255m▄%1b[38;5;251m▄%1b[38;5;239m%1b[49m▄ %1b[38;5;237m▄ %1b[48;5;254m%1b[38;5;248m▄%1b[48;5;249m%1b[38;5;254m▄%1b[48;5;235m%1b[38;5;246m▄%1b[49m"; | |
| set resp.http.moomin03 = " %1b[38;5;235m▄%1b[48;5;250m%1b[38;5;242m▄%1b[48;5;231m %1b[48;5;247m%1b[38;5;231m▄%1b[48;5;252m▄%1b[48;5;253m▄%1b[48;5;254m▄%1b[48;5;253m▄%1b[48;5;249m▄%1b[48;5;188m▄%1b[48;5;245m%1b[38;5;251m▄%1b[49m"; | |
| set resp.http.moomin04 = " |
Caption
/giphy #caption <insert phrase here>
/giphy #caption "<caption>" <insert search phrase here>broken
First result
/giphy #1 <insert phrase here>
Random answer to yes/no question
/giphy #8ball <insert question here>
⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,
This work is released under a Creative Commons Attribution-NoDerivatives 4.0 International License.
"OpenPGP" refers to the OpenPGP protocol, in much the same way that HTML refers to the protocol that specifies how to write a web page. "GnuPG", "SequoiaPGP", "OpenPGP.js", and others are implementations of the OpenPGP protocol in the same way that Mozilla Firefox, Google Chromium, and Microsoft Edge refer to software packages that process HTML data.
