However, group messages remain unencrypted. Despite being technically possible, encrypted groups are not implemented yet. The reason for this is that encryption works differently with groups. Indeed, unlike DMs where only two people need to have the asymmetric keys to encrypt/decrypt a message, every group member needs to have the keys, therefore Diffie-Hellman key derivations do not work anymore. More complex encryption methods like the double Ratchet algorithm will be implemented in the future in order to make this possible.