CryptoGSM-GSMCell
Phone Encryptor has been designed
to provide end-to-end secure communication
across the GSM network.
It is a combination of hardware and software
which can work with any mobile having Symbian
operating system. Encryption uses the AES 256
algorithm, which is currently the highest
security standard worldwide.GSMCell
Phone Encryptor provides
end-to-end security and the whole conversation
from one user to the other is encrypted.
The CryptoGSM is designed to encrypt GSM mobile phone calls and to absolutely thwart its tapping. It contains a hardware module, which works along with the software installed in the mobile phone. It allows a full duplex communication, which significantly increases user comfort.
The aim of the hardware module is to provide the authentication and key management and at the same time to serve as a safe storage for the keys. The hardware is connected to the mobile phone through Bluetooth interface.
The CryptoGSM can be switched at any time into the software mode. This ability allows you to make a secure call even at the moment when the hardware module is not available, for example when your battery is empty or when you simply do not have it with you.
The
GSMCell Phone Encryptor utilizes
the phone's built-in GSM modem to establish secure connection between
two mobile phones. After a successful synchronization of modems,
the secret encryption keys are exchanged. The keys are used to protect
this data channel. The key exchange is performed by Diffie-Hellman
and RSA algorithms. CryptoGSM generates new AES keys for every phone
call and they are automatically deleted after the call completion.
From the security point of view it is necessary to verify the hash
of the certificates on a display of the mobile phone when communicating
with a new partner for the first time. When the user verifies and
accepts the hash, every next communication with this partner can
be checked automatically.
Features
Enables the encryption of the voice communication through the mobile phone in the GSM network.
AES algorithm with a 256-bit key for voice encryption.
Alternatively proprietary algorithm or other user defined encryption algorithm.
One-time encryption keys - there are always new keys created with every new phone call. The key used with the current phone call will automatically be destroyed after the completion of the communication.
The Diffie-Hellman algorithm provides an exchange of the one-time keys.
The RSA algorithm authenticates the phone call.
Can be used in any GSM network 900/1800/1900 which supports the data call (CSD).
Supports roaming - the call encryption works also abroad depending on the operator.
The voice quality is the same as with the regular phone call - AMR voice compression.
The contact list is stored in an encrypted form in the mobile phone.
You can chose a mobile phone from the list of Symbian compatible mobile phones (the current supported models can be found in the spec. sheet).
All mobile phone functions are accessible without any restrictions.
User communicates via headset (any standard).
Connection with the mobile phone is via Bluetooth.
Bluetooth connection is additionally encrypted with AES 256 (over original Bluetooth encryption).
Authentication.
The key management.
Crypto processor for the key generation.
Secure smart card for storing of the private keys and for crypto operations (FIPS 140-1 Level 2).
