True random number generator based on set reset latch structure

• Main Authors: CHENG BAOLUO, LI SI, LI XINGXING, ZHANG XIN
• Format: Patent
• Language: Chinese; English
• Published: 12.03.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a true random number generator based on a set-reset latch structure, which comprises an entropy source extraction main circuit, an output sampling circuit, a statistical analysis circuit and a self-calibration feedback circuit, and is characterized in that the entropy source extraction main circuit compensates RC delay time of two input ports of a set-reset latch through a variable capacitor, so that the number of output '0' or '1' is basically equal. Statistical summation is conducted on the number of output 1 through a statistical analysis circuit, the lower limit and the upper limit of the frequency threshold value of 1 are set, and when the threshold value is reached, the self-calibration feedback circuit is used for adjusting the voltage difference of two polar plates of the variable capacitor, so that the capacitance value is changed, the RC delay time of the input end of the setting reset latch is compensated, and the probability of the output 1 is increased or decreased. Throug