Random number generator circuit

Abstract

The invention discloses a random number generator circuit based on real-time data streams and pseudo random numbers, comprising an m-bit linear feedback shift register circuit, an n-bit cellular automaton shift register circuit, a random counter circuit, a random data acquisition circuit, a logic exclusive-OR circuit and an HASH diffusion circuit, wherein the random data acquisition circuit outputs random bit streams; the logic exclusive-OR circuit processes the obtained original random bit streams and then generates internal random bit streams; and the HASH diffusion circuit processes the internal random bit streams to form and output random bits with different places, which are used for a crypto module. The invention can generate reliable and unpredictable random numbers, thereby enhancing the safety and the reliability of products.

Description

technical field [0001] The invention relates to data encryption technology, in particular to a random number generator circuit for data encryption. Background technique [0002] In today's information age, information security issues have become a key part of information products. Especially for security products, whether the encryption module has good security performance has become the focus of attention. The randomness of the seed used for the input of the encryption algorithm of the encryption module is an important indicator for the encryption module to achieve its good security performance, so it is necessary to generate a random number with good randomness as the original seed, which is the key technology of encryption technology. [0003] The random numbers generated by software are based on mathematical formulas operated in a program, but the generated random numbers can be reproduced, so they cannot meet the requirements of encryption. [0004] Using physical phe...

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Problems solved by technology

[0003] The random numbers generated by software are based on mathematical formulas operated in a program, but the generated random numbers can be reproduced, so they cannot meet the requirements of encryption

[0004] Using physical phenomena in nature such as nuclear decay and electrical noise, it is difficult to realize nuclear decay in ordinary encryption chips. In addition, the usual physical methods such as random Number, when converted to 0, 1, the probability of 0, 1 is not very equal, which is not ideal

And after passing the energy analysis, it is easy to be successfully attacked

[0005] In some random number generators that have been invented, such as: "Random Number Generator" invented by France RADJA "patent publication number: WO 2007 / 110506A1), its essence is only an n-bit linear feedback shift register (LFSR ) circuit; the generation mechanism is single, and its random characteristics are not ideal

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