GSMK CryptoPhone secure mobile, landline and satellite products offer trustworthy 360-degree protection for encrypted communications across network borders:
Voice Encryption
GSMK CryptoPhones are the only secure telephones on the market that come with full source code published for independent security assessments. They feature the strongest and most secure encryption algorithms available today as well as the longest key lengths available on the global market, thereby offering true strategic security and peace of mind today and in the future. GSMK CryptoPhone secure mobile, fixed-line and satellite phones use latest-generation voice codecs and are fully compatible so that encrypted calls can be made across network borders – mobile to mobile, mobile to fixed-line, fixed-line to satellite, all with seamless interoperability.
Secure Messaging
All GSMK CryptoPhone secure mobile phones feature voice as well as SMS message encryption. With a 4096-bit Diffie-Hellman key exchange and 256-bit AES and Twofish symmetric encryption, they reliably protect confidential calls and messages without any compromises in usability. Secure international messaging comes standard with special features like self-destructing “Eyes Only” messages.
Mobile Device Security
A truly secure communication device must not only protect its communication links, it must also be able to withstand attacks against the device itself. To achieve this, all GSMK CryptoPhone secure mobile phones are based on a “hardened” operating system with granular security management and streamlined, security-optimized components and communication stacks. The hardened operating system reliably protects the device against outside attacks, thus offering true 360-degree protection when it counts most.
GSMK CryptoPhone secure mobile phones also come with an encrypted storage system for contacts, messages, and keys. Smart folders protects confidential data against unauthorized access should the phone be lost or stolen.
CryptoPhone 400
The CryptoPhone 400 gives you the flexibility to conduct secure voice over IP calls using either GSM, 3G/UMTS, or wireless local area networks.
This unmatched flexibility combined with secure messaging, a hardened operating system and encrypted storage for your confidential contacts, messages and notes provides you with 360-degree protection in a sleek, elegant package including a brillant 3.2-inch TFT LCD high-resolution touch screen.
Quad-band GSMDual-band UMTS HSDPA / WCDMA with HSUPA supportIEEE 802.11 b/g Wireless LANVoice & SMS encryptionSecure storageHardened WM 6.5 operating systemStandby: Up to 360 hoursSecure talk time: Up to 5 hoursCryptophone IP 19
The GSMK CryptoPhone IP 19 is a secure IP desktop phone for end-to-end encrypted voice over IP communications on any IP network. 
The GSMK CryptoPhone IP 19 features a Gigabit Ethernet interface with an R45 plug, and optional support for wireless LAN. It uses the same encryption engine as GSMK’s secure mobile and satellite phones, featuring 256-bit AES and Twofish session encryption and a 4096-bit Diffie-Hellman key exchange, readout-hash based key authentication, and session keys that are newly generated for each call and destroyed after the call ends.
The CryptoPhone IP 19 is easy to use and easy to set up, using a large color touch screen display. Fully compatible with GSMK CryptoPhone IP mobile and satellite phones, it offers the latest technology for reliable and secure end-to-end encrypted voice over IP communications.
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