sm2 collaborative digital signature method and device

Abstract

The present application provides an SM2 collaborative digital signature method and device, the method includes: generating a first random array after completing key splitting with a server sharing the same SM2 algorithm, and triggering the server to generate a second random array, according to the The first random array performs data interaction with the server applying the second random array, determines the second shared sub-secret corresponding to the target data, and enables the server to obtain the first shared sub-secret corresponding to the target data Secretly, the cooperative signature of the target data is completed jointly with the server. This application can effectively improve the confidentiality of data transmission during the SM2 digital signature process, so that even if the data is intercepted during transmission, it can ensure that the confidential information of the client and server at both ends of the signature cannot be known.

Description

technical field [0001] The present application relates to the technical field of data processing, in particular to an SM2 collaborative digital signature method and device. Background technique [0002] With the rapid development of science and technology, there are more and more application scenarios for file data exchange through the Internet. Therefore, digital signatures have also emerged as the times require, becoming an effective means of confidentiality and authentication for Internet data exchange to meet the needs of the Internet. Confidentiality, integrity, identity authentication and authorization, and non-repudiation requirements. Among various digital signature algorithms, the digital signature algorithm in the SM2 algorithm has also become a key research topic among many digital signature algorithms because of its advantages that cannot be ignored. [0003] In the prior art, the application of the SM2 digital signature method usually uses the Shamir Secret Sha...

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Problems solved by technology

[0004] However, due to the SM2 digital signature method in the prior art, if the transmitted data is intercepted during data transmission, the intercepted party may deduce the shared secret held by one or both of the two ends of the transmission. Therefore, The existing algorithm cannot meet the encryption security requirements between the client and the server, or between the server and the server

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