2026

Grimlock

Open-source E2EE chat infra, extracted from Privyy.

Platform: Library (Go, TypeScript)

Stack: X25519 ECDH, AES-256-GCM, Argon2id, HKDF-SHA512

Grimlock — Open-source E2EE chat infra, extracted from Privyy.

Crypto core, extracted

Grimlock is the cryptographic operations library behind Privyy — secure key management, message encryption, and account recovery, open-sourced as a standalone project.

Identical functionality is implemented in both Go and TypeScript, with a cross-compatibility test suite verifying interoperability between the two, so either side of a client/server pair can be swapped freely.

Launch

Extracted from Privyy and released as open source, launched via Show HN and Reddit.