The XMPP Extensions Editor has received a proposal for a new XEP.
Title: Gateway Relayed Encryption
Abstract:
This specification describes a mechanism for end-to-end encryption
with gateways that is compatible with third-party networks.
URL:
https://xmpp.org/extensions/inbox/gateway-relayed-encryption.html
The Council will decide in the next two weeks whether to accept this
proposal as an official XEP.