Digital certificate issuing method and system based on trusted timestamp

A digital certificate and certificate issuance technology, applied in the field of time stamp, can solve the problems of meaningless event signature, tampering, data deviation, etc.

Active Publication Date: 2018-07-06
AEROSPACE INFORMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, the process of calling the CA to issue the certificate has the risk of being intercepted, which will cause the malicious program to tamper with the parameters of the event occurrence time sent to the CA, resulting in the fact that the c

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  • Digital certificate issuing method and system based on trusted timestamp
  • Digital certificate issuing method and system based on trusted timestamp

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Embodiment Construction

[0026] In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0027] The present invention aims at the scene of event certificate signature, in order to prevent the event time information contained in the digital certificate used in event signature from being modified by people, thereby introducing a time stamp server system.

[0028] Specifically, according to one aspect of the present invention, such as figure 1 As shown, a method for issuing a digital certificate based on a trusted time stamp is provided, which includes:

[0029] In step S110, the event application server obtains event information, and obtains the precise time of occurrence of the event by calling the time stamp server. Specifically, when an execut...

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Abstract

The invention relates to a digital certificate issuing method based on a trusted timestamp. The method includes the following steps: an event application server acquires event information, and acquires the accurate time when an event occurs by calling a timestamp server; the event application server calls a certificate issuing interface of a certificate issuing authority to transmit the accurate time when the event occurs and the summary of the event information to the certificate issuing authority as part of parameters; the certificate issuing authority calls the timestamp server to obtain the accurate time when a certificate is generated, issues a digital certificate used by the event according to the received parameter information, and returns the digital certificate to the event application server; and the event application server compares the accurate time when the certificate is generated with the accurate time when the event occurs, and compares the event information summary inthe certificate with the event information summary of the local operation to verify the digital certificate of the event. According to the scheme of the invention, time information is written into theextension of the certificate, so that the time when the certificate is generated and the time when the event occurs cannot be changed, and the validity of the certificate can be verified more effectively.

Description

technical field [0001] The invention relates to the field of time stamps, in particular to a method and system for issuing digital certificates based on trusted time stamps. Background technique [0002] The trusted time stamp is authorized by the National Time Service Center and issued by the authoritative trusted time stamp authority (Time StampAuthority, TSA). A valid, verifiable and legally valid electronic certificate. No institution, including the timestamp institution itself, can modify the time to ensure the authority of the time. Trusted time stamps are mainly used for anti-tampering and post-repudiation of electronic files, and to determine the exact time when electronic files were generated. Trusted time stamps are now widely used in e-commerce, electronic documents, intellectual property rights, medical care and other fields to protect the legal validity of electronic data files. The use of credible time stamps in the grain industry also prevents the core data...

Claims

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Application Information

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IPC IPC(8): H04L9/32
CPCH04L9/3263H04L9/3297
Inventor 耿方王申杜悦琨梁宵孟媛媛张梦
Owner AEROSPACE INFORMATION
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