High speed random number generator for section key generation in encryption devices

This paper describes hardware implementation of random number generator for session key generation in multiuser high capacity encryption systems. The generator is implemented by non-uniform quantization of avalanche diode noise samples which are modulo 2 added with pseudo random sequence. Physical process statistics stability is achieved by wide dynamic range automatic gain control circuitry of noise amplification stage. Statistic tests of measured results prove the correct operation of implemented device up to 320Mbit/s.