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Movim

[Movim]

Movim is a web platform that delivers social and IM features on top of the mature XMPP standard (aka Jabber). Unlike other chat apps, with XMPP you have a choice of both servers and clients - and the ability to add any features you want, and restrict your trust to those that deserve it. Movim is a user-friendly communication platform aimed at small and medium structures (up to a hundred simultaneous users), and sports a number of unique social features beyond instant messaging. And because it sits on XMPP, Movim users can explore the whole global instant messaging network from a single account.

In this project, Movim will add end-to-end encryption to its chat interface, in this case the OMEMO XEP. Since Movim is browser based, the implementation will be have to put the encryption layer client-side - or in other words, inside the browser. Because users can connect simultaneously on the same XMPP account using different browsers with Movim, each browsers will be seen as a different "device". Decrypted messages will be saved in a browser database, using IndexedDB. The web server will just take care of handling public keys to the XMPP network and store the encrypted messages, same as the user's XMPP server does when using archiving methods. The project will deal with both the one-to-one chat implementation and the Multi-User Chat part of Movim. This is part of a concerted effort to create reliable end-to-end encryption for XMPP based real time communications. At present growth of the wider network is hampered by lack of interoperability.

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This project was funded through the NGI0 PET Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310.

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Please check out NLnet's theme funds, such as NGI Assure, NGI0 Discovery (which is focussed on search, discovery and discoverability) and the Internet Hardening Fund.

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