Overview

Olvid is a French-designed private messaging application built to offer maximum privacy and security by eliminating any reliance on personal identifiers or trusted third parties. It enables text, voice notes, file, photo, video sharing and secure group chats, without requiring phone numbers, emails or address book access. All communications—including metadata—are cryptographically protected, making server compromises irrelevant to user confidentiality. Olvid clients are open-source (AGPLv3), while servers remain proprietary. The app is certified by the French national cybersecurity agency (ANSSI), supports multi-device functionality, and is available across iOS, Android, Windows, macOS, Linux, and via web browser.

Features and Capabilities

• **Security Model: **Olvid is the first messaging system whose security does not depend on any trusted third party—servers may be compromised but cannot decrypt content.
• **Metadata Encryption: **All metadata (e.g., who is talking to whom) is encrypted, ensuring anonymity even to the service operator.
• **Authentication & Integrity: **The cryptographic engine guarantees authenticity and integrity of messages, validated by independent experts.
• **End-to-End & Forward Secrecy: **Messages and files are encrypted with ephemeral session keys to prevent retrospective decryption.
• **Multi-platform & Multi-device: **Available on iOS, Android, Windows, macOS, Linux, and browser; supports synchronization across devices.
• **Data Minimalism: **Requires no personal data—no phone number, email, or address book access. All data resides locally on the device; no trace is left on servers.
• **Open-source Clients & Certification: **Mobile client code is licensed under AGPLv3; the app has obtained ANSSI CSPN certifications for iOS and Android.
• **Enterprise-grade Assurance: **Entered a public bug bounty program and underwent formal validation by leading cryptographers.