| 摘要 |
A physical random number generator (10) has a bi-stable latch (40) that operates to latch a random number bit (RNB) in response to a reception of a voltage oscillating signal (VOS). When a switching device (20) is in a first operating state, the bi-stable latch (40) is deactivated and an oscillator (30) is activated to generate one or more unpredictable voltage oscillation signals (VOS), which may provoke the bi-stable latch (40) into a metastable state upon an activation of the bi-stable latch (40). When the switching device (20) is in a second operating state, the oscillator (30) is deactivated and the bi-stable latch (40) is activated to latch a random number bit (RNB) as a function of the unpredictable voltage oscillation signals (VOS), the randomness of the random number bit (RNB) being enhanced by any provoking of the bi-stable latch (40) into the metastable state by the voltage oscillating signal(s) (VOS). |
