@prologic@twtxt.net I’ve been there yesterday w/o success.

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

@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 Well, just for my understanding. The command:
echo "Lorem ipsum" | openssl enc -aes-256-cbc -pbkdf2 -iter 100000 -out message.enc -pass file:shared_key.bin
will take the input string from echo to openssl. It then will

1. use the content of shared_key.bin as password
   
2. use PBKDF2 with an iteration of 100000 to generate a encryption key from the given password (shared_key.bin)
   
3. use the PBKDF2 generated key for an aes-256-cbc encryption
   

The final result is encrypted data with the prepended salt (which was generated by runtime), e.g.: Salted__q�;��-�T���"h%��5�� ....

With a dummy script I now can generate a valide shared key within PHP ‘openssl_pkey_derive()’ - identical to OpenSSL.
I also can en-/decrypt salted data within my script, but not with OpenSSL. There are several parameters of PBKDF2 unknown to me.

Question:

1. Is the salt, used by aes-256-cbc and PBKDF2 the same, prepended in the encrypted data?
   
2. Witch algorithm/cipher is used within PBKDF2: sha1, sha256, …?
   
3. What is the desired key length of PBKDF2 (https://www.php.net/manual/en/function.openssl-pbkdf2.php)?
   

To be continued …

oh cool @lyse@lyse.isobeef.org !! and thanks, got rid of that empty line. ATM I’m using twtxt very much in an experimental way, only manual editing or writing my tools. curious to see how it will evolve. #meta #twtxt

@lyse@lyse.isobeef.org call the @ call the @yarn_police@twtxt.net! 😂

@arne@uplegger.eu If I keep the “nonce”, I can decrypt a message with the shared key, like in the direct message specs.
But that is not how it should work. 😒

@prologic@twtxt.net I wish getting a static IP and a (more) stable internet connection wasn’t so hard over here. Then I could do proper self-hosting as well. But as it stands, I need some rented VPS.

I could go ahead and just use the VPS for the IP, i.e. forward all traffic through Wireguard to a box here at home. Big downside is that the network connection would be even slower than it already is and my ISP breaks down all the time for a few minutes … it’s just bad overall and much easier/better to rent a VPS. 🫤

hey @lyse@lyse.isobeef.org I’ve seen your mention from uhhmmm 4months ago just now using my crawler -__-’ / curious to know, do you see my mention now? #meta #twtxt

Thanks, @falsifian@www.falsifian.org! I’ll definitely start with the latter one then. Let’s see how far I make it. :-)

@falsifian@www.falsifian.org Phew, okay. So, it took a few months to grow that big. I feared that it could have been just a week or so. Yeah, insulation always is a good idea.

@prologic@twtxt.net Holly, didn’t know bots and crawlers could do comedy now… they should’ve added “Dave Chappelle/69.420” to their UA.

@prologic@twtxt.net I’m speculating, but if I had to guess I’d say it’s probably asking for your user password in order to access some user keyring (or whatever your OS uses to manage user secret credentials) used to safely store your passkeys related data in order to do its passkeys /ME doing air quotes Magic™ … you could try with a different password manager to avoid said scenario.

Also, passkeys UX sucks.

@lyse@lyse.isobeef.org I don’t remember exactly. They might have been growing all winter. The trick is to have a badly insulated extension to the house.

@falsifian@www.falsifian.org Hahaha, that’s sick, I love it! :-D I envy you a bit. On the other hand, I have to admit I’m glad that I don’t have to chisel down giant blocks of ice from the house.

@lyse@lyse.isobeef.org I am a big fan of “obvious” math facts that turn out to be wrong. If you want to understand how reusing space actually works, you are mostly stuck reading complexity theory papers right now. Ian wrote a good survey: https://iuuk.mff.cuni.cz/~iwmertz/papers/m23.reusing_space.pdf . It’s written for complexity theorists, but some of will make sense to programmers comfortable with math. Alternatively, I wrote an essay a few years ago explaining one technique, with (math-loving) programmers as the intended audience: https://www.falsifian.org/blog/2021/06/04/catalytic/ .

@falsifian@www.falsifian.org Mate, what an amazing video, holy cow! :-D We only get complete jokes of icicles compared to what you had there ealier today. It’s a giant wall. For how many days did that grow on your roof?

@lyse@lyse.isobeef.org Still melting!

@falsifian@www.falsifian.org Oh, that’s neat! Interesting how “obviously” isn’t all that obvious at all, even to the contrary. I reckon I have to read up on that subject on the weekend. :-)

I like how Ian’s and your photo complement each other, winter and summer join forces for something special. :-)

@falsifian@www.falsifian.org Wooooaaaahhh! That is BY FAR the biggest icicle I’ve ever seen. Really cool! :-) How long did it take to melt in your sink? The video download is still dripping in, looking forward to that.

@eapl.me@eapl.me I couldn’t care less about ActivityPub, but twtxt is the thing for hackers by design. That’s the appealing part for me, personally. I actually do enjoy that not everybody and their dogs are here. :-)

@thecanine@twtxt.net I agree!

@movq@www.uninformativ.de @prologic@twtxt.net I don’t know, I don’t see this happening all that often. Very rarely. The problem I encounter much more often is that tech folks are blindly adopting every new hype without thinking the slightest bit what the consequences might be.

But maybe that also means I’m one of these “told you so” guys. Not sure.

@sorenpeter@darch.dk Sorry, I realized that shortly after posting. Here’s another attempt to post the images:

@eapl_en@eapl.me Good idea

4, but I like the idea of @eapl_en@eapl.me

@prologic@twtxt.net All the URL are missing the protocol part (https://) and my markdown parser does not know how to handle but I see yarnd does it just fine.

@falsifian@www.falsifian.org
it look like your markdown image tags are missing the protocol part (https://) so they don’t render at least on my server: https://darch.dk/timeline/conv/3vtnszq

@prologic@twtxt.net Have you tried Google’s robots.txt report? https://support.google.com/webmasters/answer/6062598?hl=en . I would expect Google to be pretty good about this sort of thing. If you have the energy to dig into it and, for example, post on support.google.com, I’d be curious to hear what you find out.

@bender@twtxt.net @prologic@twtxt.net the markdown list in #jr6ywrq is a “loose” list, e.g. https://github.com/erusev/parsedown/issues/474#issuecomment-280874843
My markdown parser (parsedown PHP) renders the list with p-tags also.

@prologic@twtxt.net 🤣🤣🤣 thanks! I didn’t even notice 😅

@prologic@twtxt.net It seems like the typical problem of an unneutered cat 😂

@prologic@twtxt.net That boycott didn’t last very long, eh!?

Yeah, sounds like another hype train arriving at the station.

@doesnm@doesnm.p.psf.lt I’ll let you know once it reaches a point where it might be barely usable by someone else than myself. There are long ways to go, though. Right now, you don’t wanna even look at it. :-)

I’m continuing my tt rewrite in Go and quickly implemented a stack widget for tview. The builtin Pages is similar but way too complicated for my use case. I would have to specify a mandatory name and some additional options for each page. Also, it allows me to randomly jump around between pages using names, but only gives me direct access the first, however, not the last page. Weird. I don’t wanna remember names. All I really need is a classic stack. You open a new fullscreen dialog and maybe another one on top of that. Closing the upper most brings you back to the previous one and so on.

The very first dialog I added is viewing the raw message text. Unlike in @arne@uplegger.eu’s TwtxtReader, I’m not able to include the original timestamp, though. I don’t have it in its original form in the database. :-/

Next up is a URL view.

@movq@www.uninformativ.de That’s what I immediately thought as well. :-D @eapl.me@eapl.me Unfortunately, no fancy buttons. What does your model do?

@prologic@twtxt.net Of course you don’t notice it when yarnd only shows at most the last n messages of a feed. As an example, check out mckinley’s message from 2023-01-09T22:42:37Z. It has “[Scheduled][Scheduled][Scheduled]“… in it. This text in square brackets is repeated numerous times. If you search his feed for closing square bracket followed by an opening square bracket (][) you will find a bunch more of these. It goes without question he never typed that in his feed. My client saves each twt hash I’ve explicitly marked read. A few days ago, I got plenty of apparently years old, yet suddenly unread messages. Each and every single one of them containing this repeated bracketed text thing. The only conclusion is that something messed up the feed again.

@eapl.me@eapl.me I like this idea. Another option would be to show a limited number of posts, with an option to see the omitted ones by user. Either way, I wonder how well that works with threading.

@movq@www.uninformativ.de Ja, völlig behämmert. Schade, vertane Chance für einen „Doch“-Knopf.

@prologic@twtxt.net Tolerant yes, but in the right places. This is just encouraging people to not properly care. The extreme end is HTML where parsers basically accept any input. I’m not a fan of that. Whatever.

@prologic@twtxt.net The issue is that all bracketed text in the entire feed has been duplicated again two days ago. The bug is not fixed. Or it’s a new one.

@movq@www.uninformativ.de I can relate to that. :-/

Thanks @prologic@twtxt.net @eapl_en@eapl.me @lyse@lyse.isobeef.org ! I take note

@aelaraji@aelaraji.com You can update the package 😀

Exactly, @bender@twtxt.net, just like yours and prologic’s, too. :-( Subsequent Brackets Considered Harmful™.

@mckinley@twtxt.net Yeah, all this JS and HTMX garbage messes up a lot of things which used to work better in the earlier days.

@prologic@twtxt.net @xuu@txt.sour.is There:

Just search for ][ in https://twtxt.net/user/mckinley/twtxt.txt and you’ll see.

@movq@www.uninformativ.de @prologic@twtxt.net @bmallred@staystrong.run @andros@twtxt.andros.dev Thank you all! I don’t have emacs installed, so I’ll try lagrange and see. According to my shell history, I must have played around with amfora ages ago.

@xuu@txt.sour.is People should just fix their feeds. :-)

@aelaraji@aelaraji.com Sorry I’m late! I still have to work on the mention system, I don’t get some of the messages. I’ll look into your case and get back to you shortly 😄
If it’s a problem that ruins your experience, don’t hesitate to create an issue.

@lyse@lyse.isobeef.org on emacs i use elpher