StealthTalk Private Messenger vs FaradayWire Messenger

StealthTalk is a private messenger designed to meet high demands of business- and privacy-minded professionals. Based on a patented SDNP protocol developed for professional use in telecommunications, StealthTalk bridges the gap between professional and consumer security solutions. KEY FEATURES Secure Voice Calls Make secure calls with exceptional voice quality, even with slow internet connection speeds based on TETRA professional communication standards and SDNP protocol. Secure Messages Exchange true end-to-end encrypted messages with all sensitive message data encryption and decryption taking place entirely on the user device. Self-Destruct Messages Send confidential messages that are erased automatically after a selected period of time. Stealth Mode Protected stealth environment for sensitive calls and messages that requires users to enter their password to preview messages or receive calls. PRIVACY & SECURITY End-to-End Encryption All communication within StealthTalk is always protected with end-to-end encryption powered by a patented SDNP protocol that uses ECC 512, AES 256 and SHA-3 512 as primitives. Zero-Knowledge Proof StealthTalk knows nothing about the content of your messages or calls. User data is not collected or stored on StealthTalk servers and cannot be analyzed, sold or disclosed. Professional Telecommunications Technology StealthTalk communication security is based on the patented, tried and field-tested SDNP protocol developed for and used in professional telecommunications. REQUIRED PERMISSIONS StealthTalk requires the following permissions to deliver its private messaging services and ensure all features are operational. • Contacts: Contacts permission is used to match you with your contacts using phone number hashes. StealthTalk does not monetize, collect or store your address book data. • Microphone: Microphone access is required to make secure voice calls • Bluetooth & Location: Bluetooth and location access is needed to locate devices close to you and enable encryption key exchange. • Camera: Camera access is needed to add new contacts via QR code and send pictures with the built-in camera. • Storage: Storage access is needed to store images and files that you receive in chats. For additional information and suggestions, please contact support@stealthtalk.com

FaradayWire is a secure messaging app created from the ground up to protect your privacy. By combining modern encryption with hardware-backed security, it’s designed to put you in control of your conversations. Every message is end-to-end encrypted using AES-256-GCM with a unique per-message key. That key is securely encrypted using modern public-key cryptography—either elliptic-curve encryption or RSA—so only you and your intended recipient can read the message. Unlike traditional messaging apps, FaradayWire integrates with YubiKey hardware security keys, ensuring your private keys stay off the cloud and off your phone. For users without a YubiKey, FaradayWire also supports generating and storing private keys securely on the device. --- Hardware Requirements (if using a YubiKey) - Works out-of-the-box with any YubiKey 5 Series (e.g., 5C NFC, 5 NFC, 5C, 5Ci). - iPhone compatibility: NFC and USB-C connections are supported on compatible devices; Lightning requires a YubiKey 5Ci. Using a New vs. Used YubiKey - New key: Plug in or tap to set up—no extra steps. - Used key: If the key is already used by another app’s PIV Key Management slot (9d), you’ll be asked to create a fresh key for FaradayWire. This replaces any existing 9d key on that YubiKey. If you need to keep the old one, use a different slot/key. Technical Details - FaradayWire uses the YubiKey PIV applet, generating an RSA-2048 key in slot 9d for message decryption. - When decrypting on iPhone without a YubiKey, FaradayWire uses elliptic-curve keys and ECIES-based encryption to protect message keys. - Current version supports the default PIV PIN; custom PINs will be supported soon. - Ports: USB-C (iPhone 15+), Lightning via 5Ci, and NFC where available. Features - True end-to-end encryption — Messages and photos are encrypted before they leave your device and only the recipient can decrypt them. - YubiKey integration — Hardware-backed key management keeps private keys off the cloud and off your device. - Option to use secure local device private key storage if not using a YubiKey. - Physical message decryption — Decrypt messages directly with your YubiKey. - Message Re-Encryption — Messages are re-encrypted after returning to the main conversations page. - Simple, immersive experience — A sleek, Matrix-inspired interface that stays intuitive. - Privacy by design — No ads, no data mining, no unnecessary tracking. - Fast & reliable — Built on modern infrastructure for seamless delivery and sync. FaradayWire is inspired by Michael Faraday’s work in shielding against unwanted interference. Like a Faraday cage blocks outside signals, FaradayWire helps shield your conversations from prying eyes. Take back control of your digital privacy. Start messaging securely with FaradayWire.