Cellcrypt Mobile

Cellcrypt Mobile – A Secure VOIP application for cellphones

The Cellcrypt Mobile client is a software application that is installed on a standard off-the-shelf mobile phone. The Cellcrypt Mobile client runs in the background until it is needed, when it creates a secure IP connection allowing users to easily complete efficient and effective encrypted voice calls.

Cellcrypt has designed Cellcrypt Mobile for minimal intrusion into the usual mobile phone experience. It is easy to use, closely integrated into the phone - secure calls are made form the standard address book – and secure calls sound like any other call. Our mobile solution is fast, effective and simple to use, and addresses security on multiple levels:

Signalling Encryption

It encrypts the signalling information of a voice call, preventing an eavesdropper to gather information on the phone numbers and id of the participants of a conversation. Sometimes a call pattern analysis attack (who is calling who and when) leaks more information than the content of the calls themselves.

Voice Encryption

A phone call is encrypted on a mobile device and decrypted on the other end.

Key Generation

A unique private key is generated on the user handset during the installation. No other copy exists on another device or server.

Key Exchange

When making or receiving a secure call, the encryption engine verifies the other party, ensures secure keys are valid and generated a session key.

Key features

Address book integration

No need for a separate application to make a secure calls, Cellcrypt Mobile integrates seamlessly with a mobile phone address book and uses existing phone numbers

3G, Wi-Fi, HSPA, GPRS and EDGE

Cellcrypt Mobile supports different transport layers to transfer a secure VOIP call. It can also roam between your home or office Wi-Fi and a cellular connection to switch to the most cost-effective solution available.

System Requirements

Nokia S60 Symbian 9.1

Windows Mobile 5 (Future Release)

RIM BlackBerry (Future Release)

CCore, the Cellcrypt Encryption Engine

Cellcrypt Communicator is shipped with a powerful Encryption Engine called CCore.

During the installation process, probes within the software capture the IMEI number, serial numbers of internal hardware, and generate random numbers from random sources to generate the key material required to complete a secure call. This approach ensures complete privacy.

Making first call between two phones

Cellcrypt has been designed to minimize any change in users behaviour. Cellcrypt Calls require a prefix and then the required users mobile phone or landline number. The first call between any two Cellcrypt devices (handsets and PBX gateways) requires an exchange of public keys and validation, which takes a few seconds longer than the validation-only process in subsequent calls. Once validation is complete the voice channel automatically opens. At this point the call is guaranteed secure.

Benefits

Historically, placing a secure voice call required a proprietary hardware device, user training, little luck and a lot of patience. First generation secure voice products capture the voice stream, encoded the captured audio and then sent it digitally to an identical device using a legacy 2G GSM Protocol called Circuit Switched Data.

These first products solved the issue of voice security but had three major draw backs:

High latency;
International inoperability; and
Required a tolerant and highly trained user.

Cellcrypt has broken through these barriers with the Cellcrypt Communicator secure voice suite, providing a secure voice solution that is easy to use, with low latency, that works anywhere.