Auditable and traceable anonymous message receiving system and method

Abstract

The invention discloses an auditable and traceable anonymous message receiving system and method. The auditable and traceable anonymous message receiving system comprises a user registration module used for generating public and private keys and a public key certificate of a user through the interaction between the user and a register in an entity institution; an encryption module used for transmitting messages of the user in a communication system confidentially; a verification module used for verifying the legality of verification ciphertext messages in the communication system; a decryptionmodule used for decrypting ciphertext messages of an anonymous receiver; a link module used for judging whether any two messages are transmitted to the same receiver; a tracking module used for tracking an associated user of an abnormal ciphertext message; and an authentication module used for authenticating message contents received by an abnormal user. The auditable and traceable anonymous message receiving system provided by the invention can discover the malicious behavior of the user without affecting the privacy of the user, and then track the malicious behavior and even open user information, thereby effectively realizing the privacy protection of information sinks in the communication system and supporting the functions of a tracking mechanism for auditing, tracking and authenticating anonymous information sinks.

Description

technical field [0001] The invention relates to the field of information security in a communication system and the technical field of user privacy protection in an anonymous communication system, in particular to an auditable and traceable anonymous message receiving system and method. Background technique [0002] The group encryption realizes the identity privacy protection of the information receiver and ensures that the receiver is a member of the group, and the group is managed by one or more group managers (GM). Each group member has a pair of secret keys, namely a private key and a public key, where the validity of the public key is certified by the group administrator. The sender encrypts the message through the public key of the group member to realize the secure transmission of the message and the anonymous reception of the group member. When there is a dispute or in the case of need, the group administrator has the right to open the encrypted message to reveal t...

AI Technical Summary

Problems solved by technology

The group encryption system and the traceable group encryption mechanism realize the two-layer architecture model of the user and the administrator. However, in the existing group encryption system, when the user acts maliciously, the user is tracked or the user is opened to receive information.

But the problem is how to find the user's malicious behavior without affecting the user's privacy, and then track or open the user's information. Neither group encryption nor traceable group encryption can solve this key problem.

In addition, in the group encryption system, users may have different levels. At this time, different group administrators need to have different management rights to realize decentralized management and user classification.

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