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Digital signature method and system

A digital signature and signature information technology, applied to key distribution, can solve the problems of time-consuming, complicated digital signature operations, and low security, and achieve the effects of reducing security risks, high signature efficiency, and convenient operation

Active Publication Date: 2015-05-13
广东信鉴信息科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a digital signature method and system for the problems of complex operations, time-consuming, and low security when performing digital signatures through existing digital signature technologies in public scenarios

Method used

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  • Digital signature method and system

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Embodiment Construction

[0055] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted.

[0057] see figure 1 , figure 1 It is a schematic structural diagram of the first implementation environment of the digital signature method in the embodiment of the present invention.

[0058] figure 1 The first implementation environment shown is used to implement the digital signature method described in some embodiments or implementation modes of the present invention, including a client device 120, a PDF processing terminal 140, and a signature terminal 160, and the c...

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Abstract

The invention discloses a digital signature method and system. The method comprises obtaining a PDF file corresponding to a to-sign user identity information and a PDF file Hash value; receiving the identity information of the to-sign user; sending the identity information and the PDF file Hash value to a signature end; receiving an identity information Hash value, IBE signature information and an IBE public key which are generated by the signature end according to the identity information and the PDF file Hash value; writing the identity information Hash value, the IBE signature information and the IBE public key into a PDF file signature domain to complete digital signature. By means of the method and the system, the digital signature can be achieved without issuing digital certificates to users, the system is convenient to operate, the signature efficiency is high, real-time IBE secret keys are generated according to user identity information, and counterfeit is difficulty, accordingly, potential safety hazards and digital signature costs can be reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of electronic signatures, in particular to a digital signature method and system. 【Background technique】 [0002] With the introduction of the electronic signature method, digital certificates are widely used in many industries for digital signatures. However, there are still difficulties in signing with digital certificates in some scenarios. For example, in the insurance industry, the insurer signs the insurance application confirmation letter for the user, and the user needs to handwrite the signature. If a digital certificate is used for signature in this scenario, it is necessary to apply for a digital certificate from a trusted CA organization, issue a digital certificate to the user, and then Make a digital signature. [0003] The certificate issuance process is complicated and time-consuming. When signing with a digital certificate, you need to enter a PIN code, and after the certificate expires...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08
Inventor 廖卫民张永强汪毅刘镪
Owner 广东信鉴信息科技有限公司
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