True random number generator

Abstract

The invention discloses a true random number generator which comprises an XOR circuit and a plurality of random entropy source circuits. Each random entropy source circuit comprises a low-frequency sampling oscillation loop, an XOR unit, N phase inverters and at least two triggers, wherein N is an odd number greater than 1; the N phase inverters are connected end to end to form a high-frequency oscillation loop; the input end of each trigger is connected with the output end of the corresponding phase inverter, the output end of each trigger is connected with the XOR unit, and each trigger corresponds to different phase inverters; all the triggers sample the input ends of all the triggers under the control of a sampling clock signal output by the same low-frequency sampling oscillation loop, and a sampling result is input into the XOR unit to be subjected to XOR processing; and the output of the XOR unit is the output end of each random entropy source circuit, the output ends of all thehigh-frequency vibration loops are connected with different input ends of the XOR circuit respectively, and the output end of the XOR circuit outputs a random number sequence, so that the random number generation speed is increased.

Description

technical field [0001] The present application relates to the technical field of integrated circuits, in particular to a true random number generator. Background technique [0002] The random number generator is an important part of the information security system, which is widely used in key generation, identity authentication, etc., and provides a root of trust for the information security system. Among them, the random number generator refers to an ASIC chip or a random number generating component in the chip that generates unpredictable random numbers by collecting random quantities in the natural environment. Usually, the natural random quantity collected by the random number generator is thermal noise, and the thermal noise is provided by the amplifier method, the oscillator sampling method and the chaos method, and then the true random number required by the system is generated according to the thermal noise . [0003] Among the commonly used ways of providing therm...

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Problems solved by technology

[0005] In view of this, the embodiment of the present application provides a true random number generator, which can increase the generation rate of true random numbers and solve the problem that the generation rate of true random numbers in the prior art cannot meet the system requirements

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