Certificate-free signature method based on national secret SM2

Abstract

The invention discloses a certificate-free signature method based on a national secret algorithm. At the time of signature generation, B calculates the parameters participate in signature generation according to the secret parameters randomly selected to participate in signature generation, and send the parameters to A. A randomly selects the secret parameters involved in signature verification, and generates a message combining the secret parameters to send to B. During signature verification, B verifies whether A's signature public key is valid according to the secret parameters generated byparticipating signatures. If it is invalid, the verification fails, otherwise, the verification continues. B calculates a parameter and send it to A. A verifies whether B completes the signature verification according to the correct steps through this parameter, and sends a parameter containing the secret value if B conforms to the correct execution step, otherwise, terminates the signature. B receives the verification parameters of A and participates in the subsequent signature verification, and finally produces the result. The invention can prevent an adversary from controlling one of the parties to seek personal gain in the process of signature and verification in which the server cooperates with the mobile terminal.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a certificate-less signature method based on a national secret algorithm, and both signatories are required to participate in the signature generation and verification process. Background technique [0002] With the development of the information age and the application of big data, mobile smart terminals have been widely popularized, and it is becoming more and more common for users to use mobile terminals to access the network to process services. Therefore, a secure and efficient terminal-server cooperative signature scheme is needed to ensure the security of network services. [0003] Based on this, the present invention proposes a certificateless signature method based on a national secret algorithm. The signature public and private keys do not need to be distributed by a trusted center. Even if the adversary obtains part of the private key, the complete private...

AI Technical Summary

Problems solved by technology

[0002] With the development of the information age and the application of big data, mobile smart terminals have been widely popularized, and it is becoming more and more common for users to use mobile terminals to access the network to process services. Therefore, a secure and efficient terminal-server cooperative signature scheme is needed to ensure the security of network services

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