True random generator for cryptographic key generation, has slow clock signal generator unit, rapid clock signal generator unit and sampling unit that are integrated with programmable digital array

摘要

The generator has a sampling unit (14) for sampling a rapid clock signal generated by a generator unit (12), by a slow clock signal generated by a generator unit (5) having a random phase jitter. The generator unit (5) has a voltage controlled oscillator (6) integrated with a programmable digital array (1). The generator unit (12) and sampling unit have a sampling latch and a NOT gate inverter (13) integrated with the array.