Hi everyone I just released my first Kotlin Multip...

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[Roger Kreienbühl]

Hi everyone
I just released my first Kotlin Multiplatform library KSecureMessage.

KSecureMessage is an Apache-2.0 licensed Kotlin Multiplatform secure messaging library built around X3DH and Double Ratchet, with support for JVM, Android, Apple platforms, JavaScript, and Linux.

The 0.1.0 release includes, among other things:
• End-to-end encrypted messaging using X3DH + Double Ratchet
• Multi-device and prekey support
• TOFU identities, safety numbers, and manual verification
• Reliable delivery with application commit/discard and retry semantics
• Device authentication and multiple recovery mechanisms
• Encrypted client-side persistence and platform key providers
• In-memory and SQLDelight storage adapters
• Ktor client/server integration
• Extensive multiplatform, concurrency, migration, mutation, and security regression testing

This is still a 0.x release, so there is plenty more planned before 1.0: real client/server application samples, Ktor WebSocket support for active clients, additional platform key providers, more storage adapters such as Room and PostgreSQL/MongoDB, further operational tooling, and eventually additional privacy features.

GitHub:
github.com/rkreienbuehl/KSecureMessage
Feedback, testing, issues, and contributions are very welcome! 🔐