Generating system and generating method for true random sequence

Abstract

The invention relates to a generating system for a true random sequence. The generating system comprises a receiving antenna, a low-noise power amplifier, an automatic gain controller, an A / D convertor and a central processing unit, wherein the receiving antenna is used for receiving a radio signal from a space; the receiving antenna is connected with the low-noise power amplifier, the automatic gain controller, the A / D convertor and the central processing unit in turn; the central processing unit is in control connection with the automatic gain controller. The invention also provides a generating method for the true random sequence. Compared with the prior art, the invention has the advantages that the receiving antenna is used for directly receiving the radio signal from the space and the radio signal is used as a source signal; the radio signal from the space is a true white noise sequence, so that the acquired random sequence is a true random sequence; according to the system and the method, the true random sequence can be supplied for an encryption process in a communication system, the communication safety can be greatly promoted and the system miscellaneous degree can be reduced; a traditional random sequence source generator is not required, so that the system cost is reduced to a certain extent.

Description

technical field [0001] The invention relates to the technical field of secure communication, in particular to a system and method for generating a true random sequence. Background technique [0002] Random sequence generator is an indispensable part of information security chip or information security system. For many encryption systems, its security depends entirely on the key used and the parameters in some protocols. If the pseudo-random sequence generated by the traditional model is used as the key, if the attacker has sufficient computing power, the generation law of the pseudo-random sequence can be completely predicted to crack the key. For security systems that use pseudo-random sequences, pseudo-random sequences generated by software methods cannot guarantee sufficient uncertainty, which makes pseudo-random sequences a bottleneck for improving the performance of encryption systems. [0003] The random sequence plays an important role in the information security sys...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a system and method for generating true random sequences to solve the problem that pseudo-random sequences cannot guarantee sufficient uncertainty in the prior art and traditional true random sequences are mostly generated by thermal noise, but these so-called True random sequences still have statistical regularity such as normal distribution, Poisson distribution and other characteristics, and the same cannot guarantee uncertainty enough, and there are still technical defects of security issues in communication encryption

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