Writing about JavaScript cryptography, protocol implementation, interoperability, and building encrypted applications.https://open-e2ee.dev/en-ushttps://open-e2ee.dev/blog/e2ee-changes-your-application-architecture/https://open-e2ee.dev/blog/e2ee-changes-your-application-architecture/The crypto is the small part. Search, notifications, moderation, and recovery all move to the device. Learn what teams reported and which patterns replace server-side work.Sat, 25 Jul 2026 00:00:00 GMTArchitectureLocal-firstProduct designOpenE2EEhttps://open-e2ee.dev/blog/signal-protocol-react-native-expo-2026/https://open-e2ee.dev/blog/signal-protocol-react-native-expo-2026/The official JavaScript library is archived. Its replacement is a Node native add-on, and the community port has an open trust-check bug. Learn what runs in Expo and where the keys go.Sat, 25 Jul 2026 00:00:00 GMTReact NativeExpoSignal ProtocolOpenE2EEhttps://open-e2ee.dev/blog/tls-is-not-end-to-end-encryption/https://open-e2ee.dev/blog/tls-is-not-end-to-end-encryption/TLS protects the wire, but your server still reads every message it carries. Learn what changes when the relay holds ciphertext, including the limits on breach exposure.Sat, 25 Jul 2026 00:00:00 GMTArchitectureTLSBreach notificationOpenE2EE