Cryptophone

Trustworthy Voice Encryption at an affordable price.

GSMK is a leader in mobile voice security. Located in Berlin, Germany, the company develops, produces and markets the first mobile and desktop phones that provide strong end-to-end voice encryption with full source code published for review.

GSMK CryptoPhones are the first products taking advantage of the fact that the CPU performance of portable consumer devices, like mobile phones and PDAs, is now sufficient for strong real-time voice encryption. The processing power that is available today in every pocket now makes it possible to effectively counter rampant telecommunications surveillance and targeted attacks on your sensitive information.

We envision a day when strong, verifiable and trustworthy voice encryption in all mobile devices will be commonplace, just like strong encryption is in Internet routers today. Recent technological advances now finally allow every one of us to regain some of the privacy we lost. Widespread, uncontrolled wiretapping and privacy violations are currently threatening the business environment, civil liberties and the very future of democratic societies.

There seems to be no realistic way to stem by political process alone the current flood of intrusive communication surveillance, industrial espionage and the risk for democratic institutions that comes with it. With the advent of GSMK CryptoPhones, strong cryptographic protection of confidential voice calls has finally become available also to the not-so-technical-inclined.

GSMK CryptoPhones mean trustworthy voice encryption for the rest of us.

 

Cryptophone G10i+
The GSMK CryptoPhone G10i+ is a lightweight quad-band GSM mobile phone that comes with full source code available for independent review.

• Voice & SMS encryption
• Fully encrypted storage system for secure contacts, messages and keys
• Encrypted storage system protects confidential data against unauthorized access in case the device is lost or stolen
• 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
• 256 bit effective key length
• Encryption key is destroyed as soon as the call ends
• Source code available online for independent security assessments
• Also supports unencrypted calls, unencrypted SMS, address book, calendar, etc.
• Works with any GSM 850/900/1800/1900 network that supports circuit-switched data calls
• Standby: up to 150 hours
• Talk time: Secure up to 5 hours

GSMK CryptoPhone 300
The GSMK CryptoPhone 300 is a secure quad-band mobile phone for voice and SMS encryption that comes with full source-code available for independent review.

• Full-featured PDA Phone with Voice & SMS Encryption
• Fully Encrypted storage system for secure contacts, messages and keys
• Encrypted storage system protects confidential data against unauthorized access in case the device is lost or stolen
• Strongest and most secure algorithms available today
• AES256 and Twofish
• 4096 bit Diffie-Hellman key exchange with SHA256 hash function for voice as well as SMS
• Readout-hash based key authentication
• 256 bit effective key length
• Voice encryption key is destroyed immediately after the call ends
• Message encryption features initial key exchange with full 4096 bit key length, key forward hashing with individual encryption key for each message, SMS key information stored in secure storage container, and support for encrypted self-destructing >Eyes Only< messages
  Source code available online for independent security assessments
• Also supports unencrypted calls, unencrypted SMS, address book, calendar, etc.
• Works in any 850/900/1800/1900 GSM network that provides data call facilities
  Standby: 200 hours
• Talk time: up to 4 hours