A certificate issuer anonymity entity identification method and system

A credential and entity technology, applied in the authentication method and system field of anonymity of the credential issuer, can solve the problems of malicious collection of data, differentiated treatment of users, destruction of cloud environment location independence, transparency, etc., to achieve increased anonymity and strong privacy Effects on sex and flexibility
CN109902508AInactive Publication Date: 2019-06-18INST OF SOFTWARE - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF SOFTWARE - CHINESE ACAD OF SCI
Publication Date
2019-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a certificate issuer anonymity entity identification method and system. The method comprises the following steps that: 1) each certificate issuer joining a system generates a private key and a public key of the certificate issuer according to system public parameters; 2) the certificate issuer I generates an identity certificate of the user according to the input user identity identifier, the private key of the certificate issuer I and the system public parameters and transmits the identity certificate to the user; 3) the user selects a plurality of certificate issuersto form a confusion set; an anonymous identity certificate of the user is generated according to the public parameters of the system, the public keys of all the selected certificate issuers and the identity certificate held by the user, and sending the anonymous identity certificate to an identity verifier; Wherein the confusion set comprises a certificate issuer I for issuing a user certificate to the user; And 4) the identity verifier verifies the received anonymous identity certificate according to the system public parameters and the public key of each certificate issuer in the confusion set, and determines whether the received anonymous identity certificate is valid or not.
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Description

technical field

[0001] The invention belongs to the field of computer technology and information security, and relates to a method for protecting the privacy of an entity identity authentication process and preventing privacy leakage in a network environment, and is specifically embodied as an authentication method and system for anonymous certificate issuers. Background technique

[0002] In recent years, the protection of personally identifiable information on the Internet has become the focus of attention. As network services become more and more important in people's lives, privacy leakage incidents also emerge in endlessly, which have a great impact on the vital interests of users and national security. How to avoid privacy leakage has become an urgent problem to be solved in the current network development.

[0003] In this context, the research and application of anonymous credentials and anonymous authentication technology has become a hot spot in current identity a...

Claims

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