We are very grateful to those who repost our notes; it is the most crucial way for our ideas to reach more people. We write explanatory notes to help more people understand what makes a good chat app and can verify Keychat's design for themselves.… Keychat Sep 1, 2024, 2:41 PM
Maybe someone might wonder why the Session app wasn't listed in the note below. Session was previously based on Signal Protocol before replacing it with their own in December 2020. Session Protocol does not support forward secrecy and backward secrecy.… Keychat Sep 1, 2024, 10:12 AM
Designing a DM for a microblogging app is not the same as designing a chat app. A chat app opts for better security while accepting poorer multi-device synchronization capabilities. A DM opts for better multi-device synchronization capabilities while accepting weaker security. We need to determine what our primary… Keychat Aug 31, 2024, 10:02 AM
We are still fixing bugs in the medium group, so we need to postpone the release of the new Keychat version until next week.… Keychat Aug 31, 2024, 9:48 AM
Old Nostr DM (NIP-4) integrates four capabilities into a single Nostr key—it serves as an ID, an encryption key, a receiving address, and a sending address. The encryption key in NIP-4 does not change, so NIP-4 messages lack both forward secrecy and backward secrecy. Consequently, if… Keychat Aug 31, 2024, 6:02 AM
“The Signal protocol is used by two parties to exchange encrypted messages based on a shared secret key.” “Messaging Layer Security (MLS) is a security layer for encrypting messages in groups ranging from two to many.” So, it might seem logical to conclude that "the MLS protocol is a Keychat Aug 29, 2024, 8:07 AM
The Signal protocol, primarily known for its double ratchet algorithm, is used for end-to-end encryption of messages by the following chat applications and protocols. Many users are unaware that they are already benefiting from the security offered by the Signal protocol. Chat Applications: Signal app WhatsApp Skype: only… Keychat Aug 27, 2024, 7:46 PM
