Content centric network privacy protection method based on hybrid encryption and anonymous group

Abstract

The embodiment of the invention provides a content centric network privacy protection method based on hybrid encryption and an anonymous group. An interest packet is transmitted through the anonymous group, and decrypted into a plaintext interest packet layer by layer in a node of the anonymous group, thereby effectively preventing an attacker from getting association between the interest packet and a user. Hybrid encryption is performed on the interest packet and a data packet through encryption methods such as a user ID, a public key and a private key of a publisher, a symmetric key, and a public key and a private key of the anonymous group, so that the data packet can be protected from being modified in a process from signature to reception by the user, and plaintext content cannot be cracked inversely within certain time even though the attacker gets encrypted communication content by eavesdropping, thereby protecting the privacy of communication data. In the embodiment of the invention, the identity privacy information of a signer is protected through construction of the anonymous group, and meanwhile unlinkability between communication content and both communication parties is realized through a hybrid encryption method.

Description

technical field [0001] The invention relates to the research field of content-centric networks, in particular to a method for protecting privacy of content-centric networks based on hybrid encryption and anonymous groups. Background technique [0002] Compared with the traditional Internet, Content Centric Network (CCN) can provide storage and computing functions, and can regulate and manage content resources. A complete CCN includes users, content publishers and routing nodes. The privacy protection of CCN includes user privacy protection, content publisher privacy protection and privacy protection of content cached on routing nodes. The data communication in CCN adopts the "publish-request-response" mode, and the user obtains the data by sending the content name instead of the IP address to the source server, and no longer cares about the storage location of the data. The routing nodes in the network have the characteristics of universal caching. All passing data packets ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a content-centric network privacy protection method based on hybrid encryption and anonymous groups, which is used to solve the technical problem that the existing CCN system is likely to cause privacy leakage of users, publishers, and content

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