I am making a chat app for android. Where i have use SMACK library and also I have use omemo for message encryption. I can generate, encrypt and send - receive message to other user. But I am unable to generate fingerprint for MUC means group chat.
How to generate fingerprint for group chat or MUC using SMACK OMEMO?
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You don't have to "generate fingerprint" for MUC usage. OMEMO uses the same identity keys for MUC as are used in one-to-one chats. Basically a message to a group chat is simply encrypted for each and every recipient.
You are aware of the fact that smack-omemo-signal is licensed under GPLv3, right? ;)