Keylane vs VoidSend

Keylane is a privacy-first messenger for the people who matter most. Every message, voice memo, photo, file, and call is protected with end-to-end encryption — and Keylane goes further than most, using post-quantum cryptography designed to stay secure even against future quantum computers. Built for genuine one-to-one conversations. No groups, no feeds, no algorithms — just private, direct communication. WHY KEYLANE • End-to-end encrypted by default. Messages and calls are encrypted on your device and can only be read by you and the person you're talking to. Not by us, not by anyone. • Post-quantum protection. Keylane uses a quantum-resistant key exchange (ML-KEM-768) and a quantum-resistant double-ratchet protocol, giving you forward secrecy and protection against "harvest now, decrypt later" attacks. • Your keys never leave your device. Your private keys are generated on-device and encrypted at rest with a key derived from your PIN. We never receive them. • Metadata privacy. A sealed-sender design means our servers can't see who is messaging whom — only that a message needs delivering. • Unlock with Face ID or Touch ID. Convenient biometric unlock, backed by the same PIN-derived encryption — no security shortcuts. • Secure calling. Encrypted one-to-one voice and video calls, integrated with the native iOS call experience. • Rich, private media. Share photos, videos, files, and voice memos — all encrypted, with per-file quality options and in-app image annotation before you send. • No phone number required. Add a contact by scanning their QR code. No address-book upload, no discovery by phone number. • No ads. No tracking. No profiling. Keylane's business is privacy, not your data. HOW IT WORKS When you create an account, Keylane generates your cryptographic identity locally. Only your public keys are registered with the server. Everything sensitive — your profile, your private keys, your local files — is encrypted on your device. To connect with someone, you exchange an invite (for example, by scanning a QR code). From that point on, every exchange runs over a quantum-resistant double-ratchet session that provides forward secrecy: even if a key were ever compromised, past messages stay protected. DESIGNED FOR CONTROL • Block a contact and their ability to reach you is revoked immediately, at the server. • You choose who can contact you — there's no open directory. Keylane is for anyone who believes private conversations should stay private: journalists, professionals handling sensitive information, and anyone who simply prefers that their messages remain their own. Private by design. Quantum-safe by default. See https://keylane.app for more information.

VoidSend is a zero-knowledge encrypted messenger built for a post-quantum world. Every message, file, and call is encrypted on your device before it ever leaves — our servers act as a blind relay, mathematically unable to decrypt your data. ZERO-KNOWLEDGE ARCHITECTURE Unlike other messengers that promise privacy, VoidSend's Blind Relay design means the server only ever sees encrypted blobs. No plaintext. No metadata leaks. Your encryption keys never leave your device. POST-QUANTUM ENCRYPTION VoidSend uses hybrid encryption combining X25519 with ML-KEM-768 (Kyber), protecting your conversations against both today's threats and tomorrow's quantum computers. Messages are sealed with AES-256-GCM, and identities are verified with ML-DSA-65 post-quantum signatures. MESSAGING • End-to-end encrypted direct and group messages • Disappearing messages (5 seconds to 7 days) • Encrypted file sharing with automatic 24-hour server-side deletion • Emoji reactions, replies, and typing indicators • Message search across your conversation history VOICE & VIDEO CALLS • Peer-to-peer WebRTC audio and video calls • Optional post-quantum encrypted media streams • Call history WEB3 PAYMENTS (Only available on www.voidsend.xyz) • Built-in multi-chain wallet: Ethereum, Base, and Solana • Send and receive ETH, USDC, USDT, SOL, and SPL tokens • Wallet derived from your encryption seed — one identity, one key PASSWORDLESS AUTHENTICATION • Sign in with your crypto wallet (EIP-712 signature) • Or use Face ID / Touch ID with Passkeys • No email. No phone number. No passwords. Just you. STORIES & PROFILES • Share ephemeral photos and videos with your contacts • Custom avatars and usernames • Online status visible only to mutual contacts PRIVACY BY DESIGN • No data collection beyond your username and encrypted data • Block contacts and control who can message you • Cross-platform: your encrypted identity syncs seamlessly across all your devices VoidSend doesn't ask you to trust us — it's built so you don't have to.