Nostr double ratchet pull requests for Bitchat. Forward secrecy enables disappearing messages feature: past messages on relays can't be decrypted anymore after key rotation. Also future messages stay safe even if one key is compromised.
I don't know how mergeable it is in its current form, but I've tested it to work between real Mac and Android devices.
https://github.com/permissionlesstech/bitchat/pull/1107
https://github.com/permissionlesstech/bitchat-android/pull/697
calle (npub12rv…85vg)
