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Crypt: Multiple events not decrypted in playback #848

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opened 2026-10-05 04:48:28 +02:00 by adam · 7 comments
adam commented 2026-10-05 04:48:28 +02:00
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With the current version (1.7.0) of znc the backlog playback does not decrypt the following events:

  • Topics from any user (buffextras)
  • Message from myself to the channel
  • Action from myself to the channel
  • Notice from myself to the channel

How to reproduce:
Activate modules "crypt" and "buffextras", encrypt a channel, do any of the described points above, /msg *playback PLAY #channel 3600

Info:
Linux 4.16.0-2-amd64 #1 SMP Debian 4.16.12-1 (2018-05-27) x86_64 GNU/Linux
ZNC 1.7.0 - https://znc.in
IPv6: yes, SSL: yes, DNS: threads, charset: yes, i18n: no, build: autoconf

With the current version (1.7.0) of znc the backlog playback does not decrypt the following events: * Topics from any user (buffextras) * Message from myself to the channel * Action from myself to the channel * Notice from myself to the channel How to reproduce: Activate modules "crypt" and "buffextras", encrypt a channel, do any of the described points above, /msg *playback PLAY #channel 3600 Info: Linux 4.16.0-2-amd64 #1 SMP Debian 4.16.12-1 (2018-05-27) x86_64 GNU/Linux ZNC 1.7.0 - https://znc.in IPv6: yes, SSL: yes, DNS: threads, charset: yes, i18n: no, build: autoconf <!-- github-sync-id:330901187 -->
adam commented 2026-10-05 04:48:29 +02:00
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Duplicate of #1532 ?
@Cizzle

Duplicate of #1532 ? @Cizzle <!-- github-comment-id:395987113 -->
adam commented 2026-10-05 04:48:30 +02:00
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@DarthGandalf In this particular case, all users involved are on the same instance of znc and therefore using the same crypt-module.

@DarthGandalf In this particular case, all users involved are on the same instance of znc and therefore using the same crypt-module. <!-- github-comment-id:395987969 -->
adam commented 2026-10-05 04:48:30 +02:00
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Don't think it's a duplicate. Would have to test but as I don't actively use znc I can't put an ETA on that.

Don't think it's a duplicate. Would have to test but as I don't actively use znc I can't put an ETA on that. <!-- github-comment-id:395993070 -->
adam commented 2026-10-05 04:48:31 +02:00
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I just noticed that it doesn't only affect the backlog:
When two clients are connected to the same znc-instance and client a sends text to a channel that is encrypted with crypt, client b receives the message in encrypted form (e.g. +OK *2segUMSMhvPs...).

I just noticed that it doesn't only affect the backlog: When two clients are connected to the same znc-instance and client a sends text to a channel that is encrypted with crypt, client b receives the message in encrypted form (e.g. +OK *2segUMSMhvPs...). <!-- github-comment-id:396608496 -->
adam commented 2026-10-05 04:48:32 +02:00
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I just noticed that it doesn't only affect the backlog:
When two clients are connected to the same znc-instance and client a sends text to a channel that is encrypted with crypt, client b receives the message in encrypted form (e.g. +OK *2segUMSMhvPs...).

Same here. Multiple clients does not work properly with Crypt module, as my own message are shown encrypted on the other client and vice versa.

> I just noticed that it doesn't only affect the backlog: > When two clients are connected to the same znc-instance and client a sends text to a channel that is encrypted with crypt, client b receives the message in encrypted form (e.g. +OK *2segUMSMhvPs...). Same here. Multiple clients does not work properly with Crypt module, as my own message are shown encrypted on the other client and vice versa. <!-- github-comment-id:455585065 -->
adam commented 2026-10-05 04:48:32 +02:00
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Same here. Multiple clients does not work properly with Crypt module, as my own message are shown encrypted on the other client and vice versa.

I think this is a duplicate of #1629.

> Same here. Multiple clients does not work properly with Crypt module, as my own message are shown encrypted on the other client and vice versa. I think this is a duplicate of #1629. <!-- github-comment-id:455644646 -->
adam commented 2026-10-05 04:48:33 +02:00
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I am seeing this issue with 1.7.5+deb4 from Ubuntu 20.04.

Is there a workaround? Or possibly another module that can provide encrypted communication in an otherwise public channel?

I am seeing this issue with 1.7.5+deb4 from Ubuntu 20.04. Is there a workaround? Or possibly another module that can provide encrypted communication in an otherwise public channel? <!-- github-comment-id:659438539 -->
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Reference: adam/znc#848