Changelog

1.0.0 — Initial Release

April 2026

First public release of the Semafore platform.

Platform

• End-to-end encrypted private messaging (Signal Protocol: X3DH + Double Ratchet)
• Group messaging with organisation-scoped membership
• Broadcast messaging: admin-to-all-members, individually encrypted per recipient
• File sharing: client-side encryption before upload, up to 10MB
• iOS and Android mobile clients
• Web portal for organisation administrators (portal.semafore.io)

Administration

• Self-service organisation creation at portal.semafore.io
• Phone-number OTP authentication (no passwords)
• Member invitation, device registration review, and approval workflow
• Role management: org_admin and member
• Audit log: 12-month retention, CSV export
• Free tier: up to 5 approved members

Security

• Identity keys generated on-device at registration; private keys never transmitted
• Signed Pre-Key rotation with grace period
• One-Time Pre-Key supply with automatic replenishment
• Push notifications carry no message content (silent wake-up only)