SM2-based secure two-party collaborative signature method

• Main Authors: EOM JI-HYE, ZHAN MAOMAO
• Format: Patent
• Language: Chinese; English
• Published: 19.09.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an SM2-based secure two-party collaborative signature method, which comprises the following steps of: initializing a terminal, and communicating with a server to obtain a private key component and a related certificate file; when data signature is carried out, the terminal submits an intermediate calculation result to the server according to a communication protocol requirement, and the server carries out calculation according to a request parameter in combination with self component information and issues a server intermediate value to the terminal; and the terminal receives the intermediate value of the server, and then performs local signature synthesis calculation to complete the generation of a final signature. The invention belongs to the technical field of information security, and particularly provides a secure two-party collaborative signature method based on SM2, according to a two-party collaborative signature process, an original private key at any moment does not completel