Distributed public key infrastructure method based on block chain and attribute signature

Distributed public key infrastructure method based on block chain and attribute signature

The invention belongs to the technical field of passwords, and particularly relates to a distributed public key infrastructure method based on a block chain and an attribute signature. According to the method, a single-node CA of a traditional public key infrastructure is changed into a multi-node C...

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Hauptverfasser: LIU BAIXIANG, YUAN HEXIN, KAN HAIBIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator LIU BAIXIANG
YUAN HEXIN
KAN HAIBIN
description The invention belongs to the technical field of passwords, and particularly relates to a distributed public key infrastructure method based on a block chain and an attribute signature. According to the method, a single-node CA of a traditional public key infrastructure is changed into a multi-node CA which is arranged on a block chain and carries out certificate issuing/verification cooperatively, and cryptographic algorithms such as signature and zero-knowledge proof based on attributes are introduced, so that the identity represented by a certificate is finer in granularity; the method comprises the steps of system initialization, user initialization, certificate signing and issuing, certificate verification, certificate revocation and the like. The method is a universal scheme, is suitable for various certificate-based identity authentication scenes, enables the identity to be more stereoscopic by utilizing the coverage of attributes, has fine-grained identity authentication and certain fault tolerance, re
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Distributed public key infrastructure method based on block chain and attribute signature
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