E2ee working example for 6.1.0

[aleixq]

I am going crazy trying to make matrix-js-sdk deal with encrypted rooms messages. I tried a lot of implementations and look at riot client tests. The matrix recorder ( https://github.com/vector-im/riot-web/issues/4782#issuecomment-354667209 )works for me. But if i try to follow the same strategy with recent versions (6.1.0) and olm (3.1.4) it doesn't work and cannot decrypt the messages...could you provide a simple example to be able to add e2ee?

I examined and tried other solutions of "e2ee is not working" Issues: rpc, rivescript, basic-bot... but all of they are using old versions of sdk also...

Thanks!

[aleixq]

Replying myself, after cooking the code a little I found a working way the code is in https://gitlab.com/aleixq/matrix-js-sdk-bot-template . It only works when using LocalStorageCryptoStore . If using memorycryptostore ( https://gitlab.com/aleixq/matrix-js-sdk-bot-template/-/blob/master/index.js#L49 ) then it work the first time but the second it throws:

Error decrypting event (id=$Zu3K85nYSI6gh6IOMa33z75FW3hToCNIbaedRi9OJuM): DecryptionError[msg: The secure channel with
 the sender was corrupted. Trying to create a new secure channel and re-requesting the keys., session: ...]

Also it is based on the autoverification code (https://gitlab.com/aleixq/matrix-js-sdk-bot-template/-/blob/master/index.js#L209 )done by the bot whenever it finds an unverified device in the room.

As a starting raw template it must be adapted to scope.

[t3chguy]

memorycryptostore

This store doesn't persist anything. It stores things only in memory, so obviously if you restart the script it won't have access to encrypted history.

[aleixq]

Ok thank's! It's clear now... It was not so clear when I looked code of other old bot implementations, as there was no mention of LocalStorageCryptoStore, but it's ok now