hermes - 💡(How to fix) Fix Matrix: implement SAS device verification for bot identities [1 participants]

TL;DR

Implement a handler for m.key.verification.* to-device events in the Matrix platform to enable auto-acceptance of verification requests.

Guidance

• Develop a handler that listens for incoming m.key.verification.request events and responds with m.key.verification.ready to accept the request.
• Complete the SAS protocol by handling m.key.verification.start, m.key.verification.key, and m.key.verification.mac events in sequence.
• Consider adding a notification mechanism to inform the user via the bot's chat to check their emoji/number comparison after verification.
• Leverage the OlmMachine primitives provided by the mautrix library to implement the verification flow.

Example

No code example is provided due to the lack of specific implementation details, but the OlmMachine class from the mautrix library can be used as a starting point for implementing the verification handler.

Notes

The solution requires modifications to the Matrix platform to handle m.key.verification.* to-device events, which are currently not supported. The provided guidance assumes that the mautrix library and its OlmMachine class are properly integrated into the project.

Recommendation

Apply a workaround by implementing a custom handler for m.key.verification.* events, as the Matrix platform does not currently support these events. This will enable auto-acceptance of verification requests and completion of the SAS protocol.