Cryptophone 500i

Voice Encryption

Secure end-to-end encrypted voice over IP calls on any network – GSM, 3G, 4G, WLAN • Strongest and most secure algorithms available today – AES256 and Twofish • 4096 bit Diffie-Hellman key exchange with SHA256 hash function • Readout-hash based key authentication • Encryption keys are destroyed as soon as the call ends

Secure Messaging

Based on the same strong encryption algorithms used for GSMK CryptoPhone voice encryption – 4096 bit Diffie-Hellman initial key exchange, AES256 and Twofish message encryption with 256 bit key length

Verifiable Source Code

GSMK CryptoPhones are the only secure mobile phones on the market with source code available for independent security as- sessments. They can be verified to be free of backdoors, free of key escrow, free of centralized or operator- owned key generation, and they require no key registration.

Device Protection

Hardened Operating System
Secure Android OS built from source code with granular security management and stream- lined, security optimized components and communication stacks.

Baseband Firewall 2.0
Unique protection against over-the-air attacks with constant monitoring of baseband processor activity • Baseband attack detection and initiation of countermeasures • Detection of attempts to track the user’s location via SS7 or silent SMS.

Configurable OS Security Profiles
Hardware module controller and permission enforcement module control access to network, data and sensors (camera, microphone, etc.), keeping you in control of your individual security policies.

Encrypted Storage System
For contacts, messages, and notes with smart folders protects data at rest against unauthorized access.