Enigma GSM crypto-phone: its advanatges

Enigma advantages

1. The complete cryptographic part is separated on an own board and the connection to the basic phone is limited to a single serial connection.
2. All the secret information is stored on a very secure NetKey Card and not in the phone itself. The NetKey Card is evaluated with E4+ by the German 'BSI'.
3. The used cryptographic procedures and algorithms are tested and well known in the cryptographic scene:
· For authentication the well known RSA algorithm is used.
· A 'man in the middle' attack is not possible (special procedures have to be installed to avoid such attacks). Crypto calls with Enigma can be initiated just by pressing the Crypto start button.
· The well known algorithm for the one time pass is IDEA with 128 bit length. It is tested by the cryptographic scene and the results are published. (The proprietary 'SQUASH' algorithm is not published)

4. All keys are generated in a secure and approved trust centre.
5. Each NetKey card and out of that each phone has its own secure key, generated in the Trust Centre of Deutsche Telekom/ TeleSec. Loosing a phone does not bear the danger of corrupting the whole group.
6. The random generator for the 'one time pass' is based on a physical process stored on the NetKey Card. ( A pseudo random generator based on a software procedure is not safe against periodical sequences).
7. The used NetKey cards allow a hierarchical structure of closed user groups certified by the Trust Centre.