Post Quantum Secure Chat vs Occulta

Secure messaging for the quantum era. PQC Chat is the first consumer messaging app built with NIST-standardized post-quantum cryptography. While traditional encryption may be vulnerable to future quantum computers, PQC Chat uses ML-KEM-768 and ML-DSA-44 algorithms to ensure your private conversations remain private — today and tomorrow. Why Post-Quantum Security Matters Quantum computers pose a real threat to current encryption standards. Data encrypted today could be stored and decrypted later when quantum computers become powerful enough. PQC Chat protects you against this "harvest now, decrypt later" threat. Key Features • True End-to-End Encryption — Messages are encrypted on your device and can only be read by the intended recipient. Not even we can access your conversations. • NIST-Approved Algorithms — Built with ML-KEM-768 for key exchange and ML-DSA-44 for digital signatures, the same standards adopted by governments worldwide. • Secure Image Sharing — Photos are encrypted before leaving your device, ensuring complete privacy for all shared media. • QR Code Contact Verification — Verify contacts in person by scanning QR codes, preventing man-in-the-middle attacks. • Real-Time Messaging — Instant message delivery with read receipts and typing indicators. • No Phone Number Required — Create an account without sharing personal information. • Cross-Platform — Message friends on any device seamlessly. Privacy by Design - No message content stored on servers - No tracking or analytics - No ads, ever - Open cryptographic standards About Post-Quantum Cryptography PQC Chat implements the Federal Information Processing Standards (FIPS) 203 and 204, published by the National Institute of Standards and Technology (NIST) in August 2024. These represent the gold standard in quantum-resistant cryptography. Protect your conversations for the future. Download PQC Chat today. Terms of Use (EULA): https://pqcnow.com/terms-of-service

Your contacts app tells you who people are. It doesn't prove it's really them, and it hands every file you send through it to someone else's servers. Occulta is a cryptographic address book. Meet someone in person, and UWB hardware exchanges verified keys directly between your phones: no server ever sees them, no account is created, no phone number required. From then on, encrypt any file, photo, or video for that person and send it however you want: AirDrop, email, iMessage, any chat app. If one channel goes down, use another. The security lives in the key, not the pipe. Every key in your collection represents someone you actually met. No certificate authority vouched for them. No company holds a copy. No legal process can hand over what was never stored anywhere but your phone. Key Features • In-person key exchange via Nearby Interaction (iPhone 11+): UWB proximity confirms it's really them • Diceware verification words: a quick, human-friendly check that catches what UWB alone can't • Encrypt files, photos, and videos for anyone in your collection; share the result over any channel you choose • Encrypted group sharing: protect a file for an entire group at once • Protected by Apple Secure Enclave: your private keys are generated on-device and never leave it • No accounts, no servers, no tracking: nothing to breach, subpoena, or sell • Quantum-resistant by design: ML-KEM 1024 protects today's exchanges against tomorrow's quantum computers (iOS 26+) • Identity challenge: if a contact's account is ever hijacked, the impostor can't produce a valid signed response. A stolen account can't quietly keep talking in your place. • Shamir Secret Sharing: split vault recovery across trusted people, so no single point of failure can lock you out or hand you over • Secure Mode: a coercion-resistant layer that keeps sensitive contacts and data invisible under duress Occulta doesn't ask you to trust a company. It asks you to meet someone once. Everything after that is yours. Forever.