Device and method for generating SM2 signature private key capable of secretly sharing and hiding identity

Abstract

The invention discloses a device and a method for generating an SM2 signature private key capable of secretly sharing and hiding an identity, belongs to the field of password engineering, and is used for solving the problems of mobile Internet private data protection and online certificate query. The method is characterized in that a client side and a server side independently generate part of factors of a client side private key, the two factors cooperatively operate and publish D1, DS and Q declaration parameters, the client side and the server side cannot calculate the complete private key of the client side according to the parameters generated and obtained by the client side, but the client side identity can be authenticated offline through the declaration parameters; and meanwhile, the server side can calculate and issue a complete public key of the client side, and effective fusion of two safety protection measures of offline authentication and online joint signature is achieved.

Description

technical field [0001] The invention belongs to the field of cryptographic engineering, and in particular relates to a device and a method for generating a hidden identity SM2 signature private key that can be shared secretly. Background technique [0002] Digital certificates are the identity proofs of organizations, individuals, equipment, codes, etc. in the Internet. With digital certificates, identity authentication, behavior identification, data signature, behavior non-repudiation, contract signing, electronic transactions, etc. can be realized in the virtual world. [0003] During the use of digital certificates, it is necessary to verify online whether it is issued by an authoritative digital certificate service organization and has not expired, so as to ensure the authenticity and validity of the user's identity. With the rapid development of 5G technology, mobile Internet, and even the rapid development of intelligent networked vehicles, more and more terminals have...

AI Technical Summary

Problems solved by technology

With the rapid development of 5G technology, mobile Internet, and even the rapid development of intelligent networked vehicles, more and more terminals have limited computing power, and more and more data need to be processed concurrently. Thousands of instructions need to be received every second. If each instruction needs to query the effectiveness and timeliness of the data source through the network, the computing resources of the gateway will become the bottleneck that limits the application.

[0004] On the other hand, with the development of mobile Internet technology, there are more and more applications in mobile smart terminals, and it will become more and more difficult to protect the security data in it. It is extremely difficult to protect the signature private key used by digital certificates.

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