Linkable ring signature generation method based on SM2 digital signature algorithm

Abstract

The invention discloses a linkable ring signature generation method based on an SM2 digital signature algorithm. The number of users in a ring is set to be n, the set of public keys of the users in the ring is L = {P1, P2,..., Pn}, the pi user is a signer, the public key of the pi user is Ppi = [dpi] G, and the private key of the pi user is dpi; the method comprises the following steps: 1) acquiring a linkable ring signature of a message M to be signed; and 2) verifying the linkable ring signature. According to the method, the generation of the linkable ring signature based on the SM2 digital signature algorithm is realized, the signer hides the identity in the signature group by collecting the public key of the user, and generates the signature label at the same time,so that the privacy of the signer is protected, and the abuse of the signature is avoided.

Description

technical field [0001] The invention relates to information security technology, in particular to a linkable ring signature generation method based on SM2 digital signature algorithm. Background technique [0002] With the development of information network security and the wide application of digital signatures, traditional digital signature algorithms cannot meet the special functional requirements of certain fields, such as the anonymity requirements of electronic voting, electronic cash and anonymous communication. In order to achieve data integrity and identity anonymity at the same time, Rivest et al. proposed the concept of ring signature. Compared with group signatures, ring signatures have no administrator and no group establishment process. The signer randomly collects user public keys to form a group, and the signer signs on behalf of this group. [0003] Due to its anonymity, ring signatures cannot determine whether two signatures are from the same person, which...

AI Technical Summary

Problems solved by technology

[0005] Researchers have proposed multiple linkable ring signature algorithms, but there is no linkable ring signature based on the SM2 digital signature algorithm

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