Implicit certificate distribution method and system

An implicit certificate and certification center technology, applied in transmission systems, digital transmission systems, and key distribution, can solve problems such as inability to apply TwistedEdwards curves
CN109978518BActive Publication Date: 2021-07-02DATA COMM SCI & TECH RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
DATA COMM SCI & TECH RES INST
Publication Date
2021-07-02

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Abstract

The invention relates to an implicit certificate distribution method and system, belonging to the technical fields of intelligent vehicle networking and digital currency, and realizes the distribution of implicit certificates that can adapt to different elliptic curves and has wider application. Generate a random number r with the temporary public and private keys generated by the certification center; calculate the user's coordinate Y on the elliptic curve according to the random number r, the user's temporary public key and the generator G; The center's public key, private key, and user's identity information generate the user's authentication result s; the authentication result s and the user's coordinate Y are sent to the user for the user to generate a new user's public key and private key. The present invention is suitable for ordinary Weierstrass elliptic curve equations, and can also be used for Edwards curves which are widely recognized and widely used.
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Description

technical field

[0001] The invention relates to the technical field of digital currency, in particular to an implicit certificate distribution method and system. Background technique

[0002] The trusted center (certification authority, CA) plays the role of the top trusted root node as the central role in the secure public key infrastructure. The trusted center binds the user's public key and identity together as a digital certificate by issuing a certificate. A digital certificate is similar to an ID card in real life. It is a piece of electronic data that contains the identity information of the certificate holder and is issued by a certification center. It can provide network applications with the key and certificate management system necessary for cryptographic services such as encryption and digital signatures. . These certificates usually consist of the user's identity information, the user's public key, and a signature generated by a trusted authority.

[0003] In...

Claims

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