Anonymous data sharing method and system based on data source and data main hiding

Abstract

The invention discloses an anonymous data sharing method and system based on a data source and data main hiding. In the stages of registration and request initiating, effective access control is achieved through group signature, anonymous authentication is completed to protect user identity privacy, and meanwhile the problem that the user identity is associated due to leakage of the user IP address is solved by hiding the user IP address through onion routing. In the file uploading stage, the group administrator re-encrypts the uploaded file by using a re-encryption technology and generates key information; in the file downloading stage, after revocation verification and signature verification are completed, a group administrator generates authorization information for a user, so that theuser can obtain a decryption and re-encryption key from key information, and the forward security of the scheme is ensured; and in the group dynamic stage, the group administrator performs key updating and updates encryption of the cloud file, so that the expenditure of the user side is greatly reduced.

Description

technical field

[0001] The invention belongs to network security technology, and in particular relates to an anonymous data sharing method and system based on data source and data master hiding. Background technique

[0002] The emergence of cloud computing technology has changed the way we share information in our daily lives. This is a ubiquitous sharing concept, because anyone can request resources from various cloud servers through many devices. In cloud services, the issue of personal identity privacy and security protection has become increasingly prominent. In the process of communication, users not only want the security of the transmitted information, but also pay more attention to the security and anonymity of their own identity information. As more identities are collected, linked and sold, it becomes easier for criminals to commit fraud. Members do not wish to reveal their identities to cloud servers, so anonymity is an important form of privacy protection. ...

Examples

Embodiment

[0083] In this embodiment, a group of patients need to submit their detailed medical conditions to the hospital. These patients hope that their data can be uploaded safely and accurately, but they do not want to expose their information to other data sharers. In the process of uploading data, authentication is required. If you want to pass the authentication without revealing your identity information, you need to perform anonymous authentication.

[0084] In this regard, the existing anonymous authentication has the following situation: a malicious user uploads some false information in order to obtain benefits. At this time, the authentication scheme needs to be able to trace the user, and the trace user means that the real identity of the user can be traced. However, existing technologies such as ring signatures do not have the ability to trace users. Therefore, while using group signatures to implement anonymous authentication to ensure user identity privacy, they still hav...

technical field

[0001] The invention belongs to network security technology, and in particular relates to an anonymous data sharing method and system based on data source and data master hiding. Background technique

[0002] The emergence of cloud computing technology has changed the way we share information in our daily lives. This is a ubiquitous sharing concept, because anyone can request resources from various cloud servers through many devices. In cloud services, the issue of personal identity privacy and security protection has become increasingly prominent. In the process of communication, users not only want the security of the transmitted information, but also pay more attention to the security and anonymity of their own identity information. As more identities are collected, linked and sold, it becomes easier for criminals to commit fraud. Members do not wish to reveal their identities to cloud servers, so anonymity is an important form of privacy protection. ...

Examples

Embodiment

[0083] In this embodiment, a group of patients need to submit their detailed medical conditions to the hospital. These patients hope that their data can be uploaded safely and accurately, but they do not want to expose their information to other data sharers. In the process of uploading data, authentication is required. If you want to pass the authentication without revealing your identity information, you need to perform anonymous authentication.

[0084] In this regard, the existing anonymous authentication has the following situation: a malicious user uploads some false information in order to obtain benefits. At this time, the authentication scheme needs to be able to trace the user, and the trace user means that the real identity of the user can be traced. However, existing technologies such as ring signatures do not have the ability to trace users. Therefore, while using group signatures to implement anonymous authentication to ensure user identity privacy, they still hav...

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