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Adjustable truly-random number generation system based on time-amplitude conversion

A true random number and generation system technology, applied in the field of communication systems, can solve problems such as low security, and achieve the effects of high reliability, easy implementation, and mature component technology

Active Publication Date: 2018-01-19
国腾(广州)量子计算科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the BB84 protocol that uses a fixed-probability unbalanced random number generator to generate keys is less secure than the BB84 protocol that uses a balanced random number generator to generate keys

Method used

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  • Adjustable truly-random number generation system based on time-amplitude conversion
  • Adjustable truly-random number generation system based on time-amplitude conversion
  • Adjustable truly-random number generation system based on time-amplitude conversion

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Embodiment 1

[0031] The purpose of the present invention is to overcome the deficiency that the existing true random number generator cannot generate the random number sequence with adjustable distribution probability, and provide an adjustable true random number generation method based on time amplitude conversion. The invention collects the signal of the random signal source by the acquisition module, then inputs it to the time-amplitude conversion module, converts the random time signal into a random voltage signal, and outputs the adjustable true random number after the voltage signal is judged by the judgment module. The judgment threshold of the judgment module can be adjusted freely, the output exceeding the threshold is "1", and the output below the threshold is "0". random number. The random signal source of the present invention can be generated by the time difference between two beams of single photons split by a beam splitter from a single photon emitted by an adjustable single...

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Abstract

The invention discloses an adjustable truly-random number generation system based on time-amplitude conversion. According to the invention, for arbitrarily-distributed random time signals, a time-amplitude conversion module can be utilized to convert time intervals into voltages, and voltage signals are input into a decision module; outputting ''1'' for signals, which exceeds a decision threshold,and outputting ''0'' for signals, which are below the decision threshold, by the decision module through selecting the appropriate decision threshold, and thus outputting truly-random numbers of adjustable distribution probability of different proportions of 0 and 1 sequences can be realized according to difference of selected decision thresholds. Changing the proportions of 0 and 1 in the generated random numbers can also be achieved through adjusting an adjustable single photon source. The adopted scheme is simple, mature in component technology, high in reliability, and easy to realize.

Description

technical field [0001] The invention relates to the field of communication systems, and more specifically, to an adjustable true random number generation system based on time-amplitude conversion. Background technique [0002] Shannon, the creator of information theory, proved that the "one-time pad" encryption method can guarantee the absolute security of communication. The absolute security of "one-time pad" needs to meet the following three conditions: the length of the key is not less than the length of the plaintext; the key is completely random; the key cannot be reused. This requires providing a reliable random number generator. [0003] Random numbers are widely used in the fields of communication and encryption. For example, the RSA cipher widely used in the current classical communication requires random numbers to generate the key; in quantum communication protocols such as the BB84 protocol and the B92 protocol, all rely on "one-time pad" to ensure the absolute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58
Inventor 郭邦红王钰胡敏
Owner 国腾(广州)量子计算科技有限公司