Electronic random number generator based on oscillatory metastability with internal testing

摘要

Electronic random number generator based on the oscillatory metastability with the internal testing (70) comprises a plurality of identical blocks (73). Each block (73) is composed of TERO circuit (21), which can be achieved oscillatory metastability. Random number oscillation of the circuit Tero (21) during the oscillatory metastability phase is counted by asynchronous counter (83). The value of the asynchronous counter (83) is sampled by the sampler (84). The resulting random number (72) is formed by combining all the outputs (91) of all the blocks (73) in the corrector (76). All outputs (91) of all the blocks (73) are also connected to a circuit fault detector (75), which based on the number of oscillations of each circuit Tero (21) determines whether a random number was generated reliably. This information is indicated by the output of the error indication (71). The block control (74) generates a control signal (77) that runs oscillatory metastability in the block (21), and also the signal (78) for zero-setting block (83) and also the signal (79), which triggers the sampling block (84) at the same time identically in all the blocks (73).