COMMUNICATION SYSTEM INCLUDING DEVICES WITH SDR CHIP

摘要

The system includes two or more communication devices (1, 2),. Each device (1, 2) includes a dedicated SDR chip (10, 20) with a dedicated key generator (10, 20) to generate a secret key (ks) shared by the two SDR chips using a physical unclonable function PUF (121, 221) that takes as an input configuration data (CoD1, CoD2) and produces an output. In the dedicated key generator of each SDR chip (10, 20), the PUF (121, 221) takes as an input configuration data (CoD1, CoD2) and produces an output identical for the two SDR chips (10, 20), that is the shared secret key or a seed to derive it. The configuration data (CoD1, CoD2) is unique to each SDR chip, dependent on physical random factors introduced during manufacture of the SDR chip (10, 20), and is adapted for the respective key generator (120, 220) to generate the shared secret key.