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Truth random number producing method and device

A technology of true random number and generation method, applied in the field of random signal source, can solve the problems of slow speed, poor stability of random number, large randomness, etc., and achieve the effect of adjustable rate, good randomness and low cost

Inactive Publication Date: 2013-06-19
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Aiming at the problem of random number generation, the present invention proposes a true random number generation device and method, which solves the technical problems of high randomness, slow speed and poor stability of random number generation in existing random numbers

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  • Truth random number producing method and device
  • Truth random number producing method and device

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Embodiment Construction

[0063] The present invention proposes a random number generating device, such as figure 1 As shown, it includes a single-photon random pulse source, a clock, an FPGA-based random bit extraction module, a computer communication interface and a computer.

[0064] The single photon random pulse source, such as figure 2 As shown, it consists of a light source, multiple attenuation plates, a diaphragm, and a single photon detector, a preamplifier and a constant ratio timer (CFD).

[0065] Described single photon detector is the single photon detector based on MCP, such as image 3 As shown, it consists of an entrance window, a photocathode, a cascaded MCP, a germanium layer, a ceramic substrate, an anode, and an anode substrate. Since the MCP-based single photon detector has an area array structure, the incident light can be adjusted by an adjustable diaphragm. The area on the detector, thereby regulating the rate at which random bits are generated.

[0066] By building a singl...

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Abstract

The invention relates to a device and method for producing a truth random number; the device comprises a single photon random pulse source, a clock unit, a random bit extracting module based on an FPGA (field programmable gate array) and a computer; the random bit extracting module based on the FPGA comprises a controller, a counter, a multi-bit FIFO (first in first out) memory, a buffer unit, a comparator, 1-bit FIFO memory and a communication interface control module; the buffer unit comprises a first register and a second register. The technical problem that the current random number has great randomness, slow speed and bad stability is solved; and the random bit extracting method is circular, continuous, unlimited and high-speed.

Description

technical field [0001] The invention belongs to the technical field of random signal sources, and in particular relates to a device and method for generating true random numbers. Background technique [0002] Random numbers are widely used in radar systems, secure communication systems, simulation and other fields. There are currently three main methods for generating random numbers in the literature. One is to generate random numbers through a certain algorithm. The count, determined entirely by the mathematical algorithm and initial input parameters, is predictable. Once this definite mathematical algorithm and input parameters are cracked, the security of confidential communication will be lost, so the scope of application is limited. The second is to use physical noise and the uncertainty of its output to generate random signals. For example, according to whether the noise voltage is greater than or less than a given value, the corresponding digital quantity is given....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/58
Inventor 鄢秋荣赵宝升刘永安盛立志
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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