A true random number generator and tag chip

Abstract

The invention relates to the field of information security, and discloses a true random number generator and a tag chip. The true random number generator comprises a random number generation module used for generating true random numbers; and a post processing module used for performing post processing on the generated true random numbers by using a cryptographic algorithm, wherein the post processing module is configured to adopt a cryptographic algorithm IP core module of a tag chip that is cooperatively used with the true random number generator. The tag chip is cooperatively used with the true random number generator, and the cryptographic algorithm IP core module of the tag chip is configured as the post processing module of the true random number generator. According to the true random number generator disclosed by the invention, by adoption of the post processing module, the white noise of the true random number generator is enhanced, the entropy value is increased, and potential unknown attacks are weakened; and with respect to hardware requirements, the selected cryptographic algorithm IP core is low in complexity, low in power consumption, high in speed and is suitable for the security requirements of passive tag chips and the like for the true random numbers, and the area of the tag chip is reduced.

Description

technical field [0001] The invention relates to the field of information security, in particular to a true random number generator and a tag chip. Background technique [0002] With the emphasis on communication security, the security level requirements for tag chips are getting higher and higher. In the "Specification for Electronic Tag Chip Using SM7 Cryptographic Algorithm" formulated by the State Cryptography Administration, there are the following requirements for the tag chip: it is required to be based on passive tags to meet its low-cost and low-power requirements; the requirements are applicable to security tags and The random number generator has an application environment with higher security level requirements, especially the occasion where domestic commercial algorithms are only used as cryptographic applications. [0003] Tag chips with higher security levels usually use authentication protocols, encryption algorithms, and random number generators to jointly p...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a true random number generator, which is used to solve the problem that the structure of the existing true random number generator used with the tag chip does not meet the requirements of the tag chip

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