signal bridge on cinny

messayisto

@Moem Of course I have that already

But I am quite interested in a working Cinny...

pparent

If they manage to have end-to-end encryption, I really would be curious how they managed it. And would be interested in further documentation explaining that.

Because at first sight it seems to me impossible without the matrix client implementing some encryption premises specific of the Signal protocol, starting with generating a pair of keys compatible with the signal protocol.

I've not done an exhaustive research, but the source that I find mention an "End-to-Bridge" encryption, not an end-to-end encryption:

https://docs.mau.fi/bridges/general/end-to-bridge-encryption.html

For that reason I've personally never used this type of bridge, because my point of view is that if I'm using a protocol to protect privacy like Signal it's important that I don't tamper the protocol, not only for me but also for the contacts that expect it to be E2EE.

messayisto

@pparent Probably you are right, I only do not understand then the answer the bridgebot gave to me, saying it did not receive the decryption code. But in the end this all is far beyond my skills, I better then use the matrix client for Matrix communication and your Signal app for Signal, right?

pparent

@messayisto said in signal brigde on cinny:

I only do not understand then the answer the bridgebot gave to me, saying it did not receive the decryption code

Well if I understand well, the message seems to precisely say your account does not work with the bridge (is not bridged), because the bridge hasn't received the private key linked to your signal, while it needs it to work. (This key allows it to receive and decrypt messages, and send them back to you).

Ida_

I had issues with the technics.de bridge most of yesterday, maybe this lag affected your new login attempt too? I would try again today, things seem stable again.

messayisto

@Ida_ I deleted cache and everything and deinstalled Cinny. Will try later from scratch. Thanks for your hint!

messayisto

So, with a new installatioon I could brigde to Signal again. I did not toggle encryption on (sorry @pparent, I think I have to trust the matrix people ) and everything went fine. Good to know for everyone who needs to transfer their original Signal account from one phone to another... hopefully.

danfro

@messayisto I just checked on my signal bridge room. That has encryption enabled. So in theory it should work this way. But of course no idea if it would work when setting it up new again. Sometimes old tjings work and new ones break.

richdb

@danfro An other way is to use beeper.com. On the back this is also just Matrix. And encryption also works. Just use beeper.com as server in the Matrix client.

Edit:
Oh setup needs to be done with the Android app, but once setup you just can use a native UT client.

danfro

@richdb Isn't beeper technically working like a bridge (collection of bridges)? There are also other signal bridges out there, or one can self host one.