GSMK Cryptophone 100


  • Strongest and most secure algorithms available today – AES256 and Twofish 4096 bit Diffie-Hellman key exchange with SHA256 hash function
  • Source code available online for independent security assessments
  • Readout-hash based key authentication
  • 256 bit effective key length
  • encryption key is destroyed as soon as the call ends

Device Features:

  • Standby: 150 hours
  • Talk time: Secure up to 3 hours 15 minutes / Unsecured up to 3 hours 30 minutes

General Features:

  • No »proprietary« or »secret« encryption, no backdoors, no key-escrow
  • No centralized or operator-owned key generation, no key registration, no extra »security SIM« – just call securely
  • Provides effective and affordable protection against both IMSI-catchers and network based surveillance solutions
  • Security of the GSMK CryptoPhone can be independently verified with the published source code
  • Public, standards-based communication protocols for verification and development of compatible products
  • Free GSMK CryptoPhone for WindowsTM client enables secure telephony between landline users and the mobile GSM CryptoPhone 100, using just a computer with a modem
  • Good speech quality (CELP)
  • Works in any GSM 900/1800 network that provides data call facilities (CSD data is usually also supported while roaming)
  • Comes with professional quality headset
    (provides both ear-clip-on and headband mode)
  • Packaged in a rugged watertight transport and storage case
  • Large display, user friendly and simple interface
  • Based on commercial PDA-phone
  • The CryptoPhone 100 was the first product of GSMK.
  • Customers around the world use the system to protect their private information. As customer demand for a tri-band phone grew, the CryptoPhone 100 was succeeded by the GSMK CryptoPhone 200.
  • All current CrytoPhone products are still fully compatible with the CryptoPhone 100. All future CryptoPhone products will continue to be compatible with older models.
  • The CryptoPhone 100 is no longer in production.