CryptoPhones by Gsmk Cryptophone comprise a line of secure mobile, desktop, and satellite devices engineered for end-to-end encrypted voice and messaging. The system utilizes cryptographic protocols including AES256, Twofish, and a 4096-bit Diffie-Hellman key exchange. Security architecture incorporates a hardened operating system, a baseband firewall to defend against over-the-air attacks and IMSI catchers, and encrypted storage for data at rest. The system features autonomous key generation where voice encryption keys are erased after each call, and its auditable source code allows for verifiable security.
The hardware portfolio includes Android-based smartphones, desktop models, and MIL-STD ruggedized devices. These devices operate across cellular (GSM, 3G/UMTS), WLAN, satellite, IP, and PSTN networks, with codecs designed for low-bandwidth connections. The system also obfuscates metadata to prevent communication tracing. CryptoPhones can function as standalone devices on public networks or be integrated into private, self-hosted communications infrastructures.
