SimpleX Chat has released version 6.5, a platform that offers tools for decentralized communication without identifiers. Messages are transmitted through temporary unidirectional SMP queues (SimpleX Messaging Protocol), which are unique for each connection and are all end-to-end encrypted. The application and SMP routing code are licensed under the AGPLv3 license. To establish a connection, users must exchange a link containing the SMP server address and encryption keys, allowing users to choose which servers to use for message reception.
A private routing mechanism is used to conceal IP addresses from SMP servers, similar to onion routing in the Tor network, ensuring requests are routed through various independent SMP servers. The key features of release 6.5 include the implementation of channels for delivering and managing stateful information. Channels operate with a one-to-many delivery model with cryptographic identity independent of infrastructure operators. They can utilize multiple relays for censorship and fault tolerance.
- Added channels functionality, allowing for stateful information delivery with cryptographic identity independent of infrastructure operators. Public channels have been implemented, granting channel ownership and control to the author via cryptographic signature. Relays used for delivery are interchangeable and cannot act on behalf of the channel owner. Participation privacy is guaranteed, with relays operating as clients in the SimpleX network.
- The release prepares for the separation of intellectual property rights for protocols and the network to prevent divergence of interests between business entities and users. This includes the establishment of the SimpleX Network Consortium.