An Editable, Linkable, Non-Repudiable Ring Signature Method

Abstract

An editable, linkable, and non-repudiable ring signature method belongs to the field of network security. It solves the difficulty of revoking the ring signature in the prior art, and it is difficult to trace the identity information of malicious users. After editing, it can still be authenticated by the signature. It does not have issues such as privacy protection and flexible authentication mechanisms. The invention is used to sequentially perform system initialization, user key generation, hash key generation, signature and provide conditionally revocable identity privacy, editable and non-repudiable ring signature. After signing, if you want to edit the signature and judge whether the signature is If the signature is linkable or negotiable, the signature is verified separately, and after the verification is passed, the signature is edited to determine whether the signature is linkable or negotiable, etc., to provide a conditionally revokable identity privacy, editable, and non-repudiable environment. sign.

Description

technical field [0001] An editable, linkable, and non-repudiable ring signature method belongs to the field of network security, and is used to provide identity privacy, editable, and non-repudiation ring signatures that can be conditionally revoked. Background technique [0002] The ring signature is evolved from the group signature. Unlike the group signature, which has a group administrator as the center, the ring signature does not rely on such a center. Simply put, ring signature is spontaneous, that is, a user in the ring arbitrarily selects the public keys of other users to form a ring required for signature, which is used to hide the user's public key, while other users on the ring The identity privacy of the signers is achieved without any knowledge that they are being added to the ring. [0003] The current ring signature has the problem that identity privacy conditions are difficult to revoke and cannot be edited. For the former (difficult to revoke), due to the...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of the above research, the purpose of the present invention is to provide an editable, linkable and non-repudiable ring signature method, which solves the difficulty of revoking the ring signature in the prior art, and it is difficult to trace the identity information of malicious users. It can still be authenticated by signatures, and does not have issues such as privacy protection and flexible authentication mechanisms

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