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I think it's because they want to give both usability (history shared between devices) and security (E2E encryption). Not anybody or any kind of conversation ne
by darkwater 7y ago
I think it's because they want to give both usability (history shared between devices) and security (E2E encryption). Not anybody or any kind of conversation need encryption, so you as the end user can choose what's more appropriate.
TBH I don't know how other secure messaging programs like Signal or Wire handle the multi-device history issue.
- Vosporos 7y agoFrom what I understood, each time a new device joins the conversation, a new key is generated for everyone in the conversation (and each devices), so they are allowed to decrypt others' messages. That being said, they can't access chat history.
- cradle 7y agoWith signal each registered device will receive a copy of the chat while that device is registered. If a new device is enabled afaik it doesn't get sent any messages from the past, although technically the other devices could transmit previous messages.