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Signature method, system and device and readable storage medium

An algorithm and communication party technology, applied in the field of cryptographic algorithms, which can solve problems such as signature security threats

Pending Publication Date: 2021-04-13
成都卫士通信息产业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the traditional signature algorithm without certificate mode, the signature private key is completely controlled by the signer, so once the signature private key is leaked or lost, the security of the signature will be seriously threatened

Method used

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  • Signature method, system and device and readable storage medium
  • Signature method, system and device and readable storage medium
  • Signature method, system and device and readable storage medium

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Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0062] At present, the signature algorithm in certificateless mode will seriously threaten the security of the signature. Therefore, the present application provides a signature scheme, which can improve signature security while avoiding complex certificate verification.

[0063] A signature method provided by the embodiment of this application is introduced below, see figure 1 As shown, in an exemplary embodiment, the embodiment of this application discloses the first signature me...

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Abstract

The invention discloses a signature method, system and device and a readable storage medium. The method disclosed by the invention is applied to a first communication party, and comprises the following steps: generating a target parameter based on a randomly selected first random number, a first part private key of the first communication party and an SM2 signature algorithm, and sending the target parameter to a second communication party, generating a signature parameter of the target message by the second communication party based on a randomly selected second random number, a second part private key of the second communication party, the target parameter and an SM2 signature algorithm, and sending the signature parameter to the first communication party; generating a signature of the target message based on the first random number, the first partial private key and the signature parameter; and publishing the signature, so that the verification end verifies the signature by using the signature verification public key. According to the invention, complex certificate verification is avoided, signature security is improved, and the method is suitable for application scenarios of multi-terminal collaborative signature. Correspondingly, the signature system and device and the readable storage medium provided by the invention also have the above technical effects.

Description

technical field [0001] The present application relates to the technical field of cryptographic algorithms, in particular to a signature method, system, device and readable storage medium. Background technique [0002] Currently, in order to avoid complicated certificate verification in the signature verification process, a signature algorithm in certificateless mode can be implemented. After the signature is generated using the signature algorithm in the certificateless mode, the verifier can directly verify the signature without verifying the certificate. Among them, in the traditional signature algorithm without certificate mode, the signature private key is completely controlled by the signer, so once the signature private key is leaked or lost, the security of the signature will be seriously threatened. [0003] Therefore, how to improve signature security while avoiding complex certificate verification is a problem to be solved by those skilled in the art. Contents o...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L9/32
CPCH04L9/0825H04L9/0869H04L9/3252
Inventor 王现方涂彬彬张立廷
Owner 成都卫士通信息产业股份有限公司
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