Routing method with metadata privacy protection and source responsibility investigation capabilities

Abstract

The invention belongs to the technical field of computer network security, and relates to an efficient routing protocol for simultaneously providing anonymity and responsibility investigation capability in a network layer, in particular to a routing method with metadata privacy protection and source responsibility investigation capabilities. According to the method of the invention, a group signature is attached to a message network layer to realize the balance between anonymity and responsibility. The group signature in the message can provide wide and efficient responsibility investigation,and the authenticity of the message can be verified by any router on a path in a non-interaction mode, so that the communication overhead during message verification is eliminated. Meanwhile, the privacy of the sender is protected by the group signature, so that the signer in the group cannot be distinguished by entities outside the group. In addition, in order to further reduce the verification overhead of the group signature, a challenge-based separation verification mechanism is designed. Compared with pre-calculation and batch verification, the separate verification mechanism can reduce the verification load of the specified router to a greater extent, thereby improving the efficiency of the protocol.

Description

technical field [0001] The invention belongs to the technical field of computer network security, relates to an efficient routing protocol that provides both anonymity and accountability at the network layer, and specifically relates to a routing method with metadata privacy protection and source accountability capabilities. Background technique [0002] A large number of network monitoring incidents have made the public's demand for communication privacy protection increasingly strong. Although traditional end-to-end encryption can protect data privacy, it cannot protect host identity privacy. Attackers can still know "who communicates with whom where and when" through network attacks. Therefore, anonymous communication emerges as the times require. Anonymous communication mainly protects metadata in the communication process while protecting data privacy, thereby protecting user identity privacy. Since the birth of the first anonymous network (Chaum's Mix-Nets), researche...

AI Technical Summary

Problems solved by technology

But APNA also has some problems: sharing keys within the source domain reduces the anonymity set

In addition, entities outside the source domain cannot interpret EphID and have no accountability

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