SRAM-PUF-based fuzzy safe box authentication method

Abstract

The present invention discloses an SRAM-PUF-based fuzzy safe box authentication method. According to the method, during the registration phase, the feature data of SRAM-PUF are extracted and a secret key S is constructed. Meanwhile, the hash value of the secret key S is calculated. According to the feature data of SRAM-PUF and the secret key S, a fuzzy safe box V is generated for encryption. A corresponding authentication method is provided cooperatively, wherein the fuzzy safe box technology is introduced to the SRAM-PUF-based authentication system. According to the invention, the polynomial reconstruction and the error correction coding are conducted to generate the secret key S. based on the above manner, the reconstruction and authentication of the secret key can still be accurately realized with the presence of a certain error rate PUF. The ambiguity of the PUF and the accuracy of the secret key are organically combined, and an encryption authentication system having the error correction function is provided. As a result, the safety and the reliability in the authentication process are improved. Meanwhile, the method is easy to implement, and can resist various current mainstream attack modes to the fuzzy safe box.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an authentication method and authentication system based on SRAM-PUF. Background technique [0002] As an emerging information security mechanism, Physical Unclonable Functions (PUFs) realize functions such as security authentication and key storage by extracting uncontrollable and unclonable circuit differences generated during the manufacturing process of circuits. PUF-based security authentication technology is one of the important applications of PUF. To solve the reliability problem of PUF, the mainstream solution is fuzzy extraction through auxiliary data stored in non-volatile registers. The fuzzy extractor algorithm is a widely used authentication algorithm at present. In the registration stage, a random number R is first selected, and the value hash(R) of R after the general hash algorithm operation is stored. The fuzzy extraction algorithm performs an XOR...

AI Technical Summary

Problems solved by technology

[0004] Compared with biological characteristics, PUF circuits are also irreplaceable and unique. However, since SRAM-PUF (Static Random Access Memory Physical Unclonable Function) circuit units contain highly random units (oscillation points), these units The power-on value obtained by power-on is uncertain

And the key S directly obtained through the oscillation point will have a certain percentage of errors

The traditional method cannot correct this error when performing authentication, so there is a certain percentage of errors in the obtained authentication results

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