SM2 signature method based on mobile KEY key protection technology

Abstract

The invention relates to the technical field of information security, in particular to an SM2 signature method based on a mobile KEY key protection technology. The problem that an existing SM2 digital signature method based on cooperation of two parties cannot be applied to mobile equipment with limited resources due to high calculation cost and low signature efficiency is solved. The method comprises the processes of system initialization, secret key generation, cooperative signature and complete signature output, an SM2 signature private key is divided into two parts which are kept by a first communication party and a second communication party respectively, and a signature public key and a complete SM2 signature can be generated only by cooperative calculation of the two communication parties in the secret key generation stage and the cooperative signature stage. Any party cannot obtain a complete private key to independently output a complete signature. An attacker can be prevented from exporting a complete private key, and the security of the private key is high. Meanwhile, a product secret segmentation technology is adopted in the collaborative signature process, so that the calculation cost is greatly saved, the signature efficiency is improved, and the method can be applied to mobile equipment with limited resources.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an SM2 signature method based on mobile KEY key protection technology. Background technique [0002] The SM2 digital signature algorithm is an important part of an elliptic curve cryptographic algorithm standard. It is used to realize digital signatures, ensure the authenticity of identities, the integrity of data, and the non-repudiation of behaviors. It is the core technology and foundation of cyberspace security. The support has now become the ISO / IEC international standard, and has been widely used in the field of domestic commercial secret applications for many years. [0003] In recent years, with the improvement of the mobile Internet and the rapid popularization of smart terminals, traditional Internet applications continue to extend and develop into the wireless field. Mobile applications are changing people's living habits in an all-round way. Many applicat...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a SM2 signature method based on the mobile KEY key protection technology, which adopts the product secret division technology, has lower calculation cost, improves signature efficiency, can be applied to mobile devices with limited resources, and overcomes the existing There is a problem that the SM2 digital signature method based on two-party collaboration cannot be applied to resource-constrained mobile devices due to high computational cost and low signature efficiency

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