Trusted digital signature method and device based on blockchain

A digital signature and blockchain technology, applied in the blockchain field, can solve problems such as difficulty in verification and dependence on third-party users, and achieve the effects of preventing tampering and destruction, ensuring authenticity and traceability, and increasing credibility

Active Publication Date: 2021-01-08
南京通付盾区块链科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a trusted digital signature method and device based on blockchain to solve the problem that the authority, verifiability and credibility of digital certificates and time stamps are completely dependent on third parties and difficult for users to verify

Method used

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  • Trusted digital signature method and device based on blockchain

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Embodiment Construction

[0037] Blockchain has the characteristics of decentralization, traceability, tamper-proof, anonymity, etc. Through blockchain technology, the transparency and traceability of digital signature and verification can be realized to a certain extent, and digital signature and verification can be further guaranteed authenticity and credibility. The embodiment of this application is based on the digital signature service provided by the existing technology, adding technical means such as data uplink, verification, and key pair encryption and decryption. The method of this application will be described in detail below:

[0038] see figure 1 , which is a flowchart of a trusted digital signature method based on blockchain provided by this application;

[0039] Depend on figure 1 It can be seen that the method of this application is realized through data interaction between multiple parties, with the initiator (signer) of the scheme as the execution end, the method includes:

[0040]...

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Abstract

The invention discloses a trusted digital signature method and device based on a blockchain. The method comprises the steps of generating a digital certificate request; acquiring a digital certificate, and respectively storing the digital certificate and the digital certificate application record into a blockchain and a database; calculating a hash value of local to-be-signed data; generating a timestamp request according to the hash value of the to-be-signed data; obtaining an authoritative timestamp; storing the timestamp application record in the blockchain; generating a signature file according to the digital certificate, the hash value of the to-be-signed data and an authoritative timestamp; generating a signature data packet and uploading the signature data packet to the blockchain;and obtaining a verification result of a verification party on the signature data packet. According to the application, the blockchain technology is adopted, the application and issuing records of thecredible timestamp and the authoritative digital certificate are backed up in the blockchain respectively, the traceability and verifiability of user behaviors are ensured, and thus the credibility of authoritative CA service and authoritative TSA service is ensured.

Description

technical field [0001] The invention relates to the technical field of block chains, in particular to a trusted digital signature method and device based on block chains. Background technique [0002] A digital signature, also known as a public key digital signature, is a digital string. This digital string not only ensures that others cannot easily forge it, but also effectively proves the authenticity of the information sent by the information sender. A digital signature is different from an ordinary physical signature, and it is a method for authenticating digital information implemented using technologies in the field of public key encryption. [0003] In practical applications, the process of digital signature is usually implemented by the signer and the provider who configures the digital signature service. Among them, the digital signature service uses authoritative digital certificates and time stamps, and the credibility of the signature depends entirely on the firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/08H04L9/30H04L9/32G06F16/27
CPCG06F16/27H04L9/0825H04L9/30H04L9/3236H04L9/3247H04L9/3263H04L9/3297
Inventor 汪德嘉张齐齐宋超
Owner 南京通付盾区块链科技有限公司
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