Today is an important day. We have a new extension: Direct message 🪇🗨️🚀🥳❤️
https://twtxt.dev/exts/direct-message.html
#twtxt

@andros@twtxt.andros.dev I have really tried to get behind it. For an implementation for my TwtxtReader (PHP) I simply lack the knowledge of the standard-openssl parameters.
All my solution approaches require “nonce” or “initialization vector” on one or the other side. In addition, the “magic numbers” (“Salted__”) were not consistent in my tests.

@arne@uplegger.eu Hi! I love that you’re implementing it! Maybe, when we’re both done, we could test the clients by communicating both.
I don’t think I’m going to be able to help you much, my knowledge of OpenSSL and PHP is not as high as I’d like it to be.
Maybe the OpenSSL version uses SHA-1 by default in PHP. Or that the IV is derived together with the key (not generated separately). But I’m not able to answer your questions, sorry.
I’m invoking the commands directly, without any libraries in between. Maybe that would help you?

@arne@uplegger.eu I think you want to use the sodium_crypto functions/modules for PHP 🤔🤔

@andros@twtxt.andros.dev Here is everything written down I know to this stuff: https://github.com/upputter/testing-twtxt-dm/blob/main/README.md

@arne@uplegger.eu Nice! 👍