jdev - 2021-04-30

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  78. lovetox do you not write the software for master and slave?
  79. lovetox im not getting how a slave would just start talking to other slaves, if thats not in your application design
  80. lovetox hence why you would need to disallow it at another level
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  85. zebizebi I have a question about omemo and its payload meta data: when you send a small message you can see the <payload> kdsf=</payload> is also small and when u type a long message the payload gets also long ( the message is gibberish because of the encryption ) but is this not meta data that you expose for an adversary? Like with PGP you send a small or big message it becomes automatically a big block of random data so you can't tell if the message was small or big.
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  89. flow zebizebi, that is what SCE and OX have a random content random *length* rpad element
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  91. flow https://xmpp.org/extensions/xep-0420.html#affix_elements
  92. jonas’ uh, why random content?
  93. jonas’ doesn’t one want padding to be known content to avoid sidechannels and stuff?
  94. flow maybe, but would deterministic content also not be ideal? sure, your crypto is already pretty weak if this is the case
  95. flow which kind of sidechannels are you thinking of? timing based ones? what is "and stuff"?
  96. jonas’ this is just a vague memory from security classes
  97. flow and we also have a bunch of determinstic content already in the cleartext, the first element is even on a predictable position
  98. jonas’ I’d have to look into it in more detail which I can’t right now because work
  99. flow sure, let me know if you find something
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  101. flow we could also say, one-time random content, i.e. the content is decided once per "session". which feels like a compromise. but then again, I don't want to doctor more on the spec without some hard facts
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  115. zebizebi jonas’
  116. zebizebi So I have to install SCE so the body of omemo gets randomized aswel?
  117. zebizebi I mean flow
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  119. flow zebizebi, that's unfortunately now how it works. the currently widely used spec of OMEMO does not use SCE, the latest spec does use SCE but is not yet deployed
  120. flow zebizebi, that's unfortunately not how it works. the currently widely used spec of OMEMO does not use SCE, the latest spec does use SCE but is not yet deployed
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  135. marc0s hi, is there any known usage or implementation of XEP-0161 "Abuse reporting" out there? I see the XEP marked as deferred, and neither prosody or ejabberd announce support for it. Is there (if known) because a lack of interest or maybe because it's something that can be better done "out of band"?
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  137. marc0s my main use case would be to give the users the ability to report abuse or harassment from other network users
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  145. zebizebi flow
  146. zebizebi can I send u a dm?
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  344. lovetox where is all these admin commands defined setting / deleting MOTD etc
  345. lovetox is that in a XEP?
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  347. mathieui lovetox, 0133 ?
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  349. lovetox hm no thats just adhoc it seems
  350. lovetox but good to know that it also there exists
  351. lovetox i meant when you send a message to yourdomain/announce/motd
  352. Zash Is that even a XEP?
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  356. lovetox Zash, thats was my question :D
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  358. mathieui I don’t think that’s a XEP
  359. mathieui it is very ad-hoc
  360. mathieui (which is why ad-hoc commands exist :D)
  361. lovetox ok, Zash do you know if prosody supports that?
  362. Zash Probably stuff that early servers did before ad-hoc was invented
  363. Zash Prosody doesn't support either method out of the box, MOTD is changed via config. MattJ may have something in the works for Snikket.
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  368. mathieui Zash, admin_adhoc is in the prosody main repo though
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  371. Zash It doesn't do MOTD afaik
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  373. MattJ Yeah, I plan to only support one of them... probably announce
  374. MattJ MOTD doesn't make much sense, especially these days
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  376. MattJ Regardless of what it's called, the behaviour will be to send the message to everyone on the server, whether they are online or not
  377. MattJ And to be clear I mean ad-hoc, not the old /announce/motd
  378. Kev There used to be a ‘standard’ for doing admin type things, but I don’t think it was ever XEPpified.
  379. Kev It was just what jabberd1 did, so other early servers did too.
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  384. lovetox ok thanks
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  393. zebizebi lovetox what is an adhoc?
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  395. zebizebi can I compare adhoc to LAN?
  396. zebizebi even the term LAN I dont understand it completely, I know its a local are network but can a LAN connection reach the internet or is it only locally without internet?
  397. Zash Ad-hoc commands, XEP-0050, a way of exposing commands without writing a specification about it. Kinda like web forms with form fields and dropdowns and such.
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  400. Zash ad-hoc networks are something else
  401. zebizebi zash thanks for clearing it up also can you help me understanding adhoc network and is it like a LAN?
  402. zebizebi not that I understand LAN completely lol
  403. Zash adhoc mostly means it's without prior setup, something you make up on the spot, without preparation.
  404. zebizebi ok I get it and the LAN?
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  406. lovetox zebizebi, these are surley things you can use the interent for, a place where much information is just a view keyboard strokes away
  407. Zash a LAN without prepared infrastructure, routers etc
  408. lovetox zebizebi, these are surley things you can use the internet for, a place where much information is just a view keyboard strokes away
  409. zebizebi lovetox I googled bunch of what a LAN is, and I read everytime different statements. I know that for example a modem or router is a LAN but I use my modem to connect to the internet right? But on another website I read LAN are only locally so they can not access the internet and that confuses me
  410. Zash It just means a small network
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  412. Zash Seems a bit off-topic for the Jabber/XMPP Development channel don'tyouthink?
  413. zebizebi It is but I saw the adhoc thing and it remembered things that I did not understand
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