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

Abstract

The invention discloses an anonymous data sharing method and system based on the hiding of data sources and data masters. During the registration and request initiation stages, group signatures are used to implement effective access control and complete anonymous authentication to protect user identity privacy, while onion routing is used to hide The user IP address solves the problem that the user’s identity is associated due to the leakage of the user’s IP address; in the file upload stage, the group administrator uses re-encryption technology to re-encrypt the uploaded file and generates key information; in the file download stage, the revocation verification and signature are completed After verification, the group administrator generates authorization information for the user so that the user can obtain the decryption and re-encryption key from the key information to ensure the forward security of the scheme; The encryption of files in the cloud greatly reduces the overhead of the client.

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. ...

AI Technical Summary

Problems solved by technology

There are currently some IP address protection schemes in other fields, such as pseudonym technology and forwarding schemes through trusted third parties. Some pseudonym technology can protect user identity privacy and IP address, but frequent changes of pseudonym will cause client overhead increase, affecting user experience; trusted third-party forwarding schemes suffer from passive and active attacks and leak real IP addresses

Images