Verification method, user node and certification authority center of digital certificate
A digital certificate and verification method technology, applied in the field of communication, can solve problems such as long query time, disasters, poor security, etc., and achieve the effect of ensuring authenticity and security
Active Publication Date: 2022-04-15
CHINA UNITED NETWORK COMM GRP CO LTD
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Problems solved by technology
However, if the two parties use different CAs, they must start from the bottom of the CA tree structure and query from the bottom to the top until they find a mutually trusted CA. The query time is long and the efficiency is low; and the security is poor. cause a catastrophe
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[0072] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0073] In order to solve the problems of using different CAs between different user nodes, querying the commonly trusted CA takes a long time, low efficiency, poor security, and difficulty in data interaction, this disclosure proposes a blockchain-based digital certificate verification method, user node and certification authority. Taking the data interaction between the first user node and the second user node as an example, the following embodiments are described. The following will be described in detail one by one with reference to the drawings of the embodiments provided in the present disclosure.
[0074] figure 1 A flowchart showing a verification method for a blockchain-based digital certificate provided by an e...
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This disclosure proposes a blockchain-based digital certificate verification method, user node, and authentication authority center. The method includes: receiving the first digital certificate broadcast by other user nodes, and obtaining the first user in the first digital certificate public key; obtain the hash function, the second digital certificate of the first user and the digital signature of the first user from the pre-stored third digital certificate of the first user; according to the public key of the first user and the digital signature of the first user Obtain the first summary information of the second digital certificate by digital signature; obtain the second summary information of the second digital certificate according to the hash function and the second digital certificate; if the first summary information is consistent with the second summary information, determine the first user The public key is correct. Guarantee the authenticity and security of digital certificates, and provide efficient and credible digital certificate verification services. The characteristics of blockchain technology such as decentralization, tamper-proof, and multi-party maintenance can help the public key infrastructure system to be more transparent, credible, convenient and efficient.
Description
technical field [0001] The disclosure belongs to the field of communication technology, and in particular relates to a blockchain-based digital certificate verification method, a user node, and an authentication and authorization center. Background technique [0002] After checking the user's identity information, the Certification Authority (CA) of the Public Key Infrastructure (PKI) sends the user a digital certificate, which contains the user's public key, user information, and CA's Digital signatures, etc., digital certificates are the only electronic documents for users to prove their identity and the legitimacy of their public keys. Before data exchange, two user nodes need to verify the legality of each other's digital certificates. If both parties use the same CA, they only need to verify the signature of the CA on the digital certificate. However, if the two parties use different CAs, they must start from the bottom of the CA tree structure and query from the botto...
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IPC IPC(8): H04L9/40H04L67/10
CPCH04L63/0823H04L63/083H04L67/10
Inventor 黄珂
Owner CHINA UNITED NETWORK COMM GRP CO LTD