Block chain based PKI (public key infrastructure) system and semi-random joint certificate signature method

A public key infrastructure and joint signature technology, which is applied in the field of public key infrastructure systems and semi-random joint certificate signatures, can solve problems such as hacker attacks, personal privacy information leakage, and user economic losses, and achieve the effect of ensuring security

Active Publication Date: 2017-05-31
WUHAN UNIV
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Problems solved by technology

[0004] However, as a trusted third party, the CA may also be attacked by hackers. If the CA is controlled by the attacker, it can issue certificates for any malicious websites or users. Users cannot identify the identities of these malicious websites and users by verifying the CA signature. , causing users to be deceived by phishing websites, etc., causing users to suffer economic losses and personal privacy information to be leaked

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  • Block chain based PKI (public key infrastructure) system and semi-random joint certificate signature method
  • Block chain based PKI (public key infrastructure) system and semi-random joint certificate signature method
  • Block chain based PKI (public key infrastructure) system and semi-random joint certificate signature method

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[0018] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0019] The invention aims to solve three problems: 1. Decentralization of multi-level CAs in the PKI system; 2. Single-point failure of CAs in the PKI system; 3. Certificates are tamper-proof and easy to manage. The impacts of these three types of problems are: 1. The upper-level CA is attacked, which may easily cause the lower-level CA to be controlled; 2. A single point of CA failure results in the proliferation of malicious certificates; A secure link to the server. The technology involved in the invention includes cryptographic random selection algorithm, multi-sign...

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Abstract

The invention discloses a block chain based PKI (public key infrastructure) system and a semi-random joint certificate signature method. The system comprises a user Client, a Web server and a plurality of CAs (certificate authorities), wherein the plurality of CAs constitute a CA coalition; the Web server applies to the plurality of CAs for a certificate, the plurality of CAs sign jointly, then the certificate is stored in a block chain, after storage, the CAs issue the certificate to the Web server, and when the user Client and the Web server are in TLS connection, the user Client needs to verify the legitimacy of the certificate of the Web server.

Description

technical field [0001] The invention belongs to the field of computer network security technology and cryptography technology, and in particular relates to a public key infrastructure (Public Key Infrastructure, PKI) system based on blockchain (Blockchain) and a semi-random joint certificate signature method. Background technique [0002] The essence of public key infrastructure (PKI) is to standardize asymmetric key management and the mapping relationship between identities and public keys. The birth of public key cryptography marks that cryptography has entered a new era, and the application of cryptography technology has developed from simple confidential communication to identity authentication. To put it simply, in real life, everyone has an ID card, which is used to identify the identity. Buying a train ticket, staying in a hotel, and handling banking business requires identification. Three parties, only the ID card issued by the police station will be accepted, and n...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L29/06
CPCH04L9/3265H04L63/0823
Inventor 陈晶姚世雄王持恒何琨杜瑞颖
Owner WUHAN UNIV
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