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Lightweight privacy-enhancing group message sending method

A group message, lightweight technology, applied in the direction of electrical components, wireless communication, security devices, etc., can solve the problem of resource consumption, privacy protection strength, inability to clearly know the issuer of the content of the message and the issuer of the message, less calculation Resources and communication resources and other issues, to achieve the effect of solving resource consumption and privacy protection intensity

Inactive Publication Date: 2013-08-21
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the expense of less computing resources and communication resources, the present invention ensures that only legal members of a specific receiving group can clearly know the content of the message, the issuer of the message, and the issuer of the message, and no one else can clearly know The content of the message, the issuer of the message and the issuer of the message solve the technical problems of resource consumption and privacy protection strength of the traditional group messaging method

Method used

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  • Lightweight privacy-enhancing group message sending method
  • Lightweight privacy-enhancing group message sending method
  • Lightweight privacy-enhancing group message sending method

Examples

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with specific embodiments.

[0034] The communication parties in the group message sending are node A and node i, node A is the sender of the group communication message, node i is a legal member of a specific receiving group, satisfying i∈[1, t], t is a specific The number of legal members in the receiving group. Before sending the group message, the system parameters have been correctly established, and the two parties in communication already have the correct public key and valid identification of the other party.

[0035] The system parameters are described as follows:

[0036] p: a large prime number;

[0037] q: a large prime factor of p-1;

[0038] g: multiplicative group A q-order element in ;

[0039] hash: a strong non-collision one-way hash function with a security length of at least 128 bits;

[0040] (E k ,D k ): a symmetric key encryption algorithm and a decryption algorithm usi...

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Abstract

The invention discloses a lightweight privacy-enhancing group message sending method. In a group message signcryption period, sender identification, specified receiving group identification and fresh value ensuring identification are used to enable a message to be reliable and fresh, and Hash algorithm and a signcryption method are used to ensure contents of a message to be reliable. In a group message verification period, legal members of a specified receiving group use a private key, a public key of a sender and a signature for a group communication message of the sender to obtain a group message encryption key, and sender identification, specified receiving group identification, a fresh value and the Harsh algorithm are used to verify effectiveness of a group message. The lightweight privacy-enhancing group message sending method ensures that only the legal members of the specified receiving group can clearly know the contents of the message, an issuer of the message and an issued object of the message at the cost of computing resource and communication resource.

Description

technical field [0001] The present invention relates to secure group communication, specifically a method of using group signcryption technology to realize safe and confidential transmission of group messages, ensuring that only legitimate members of a specific receiving group can decrypt messages and verify the validity of messages, and no one else can The method of decrypting messages and verifying the validity of messages is suitable for secure and confidential transmission of group messages in confidential group communications in wireless communication networks, and belongs to the field of information security. Background technique [0002] Zheng proposed the signcryption (Signcryption) method for the first time, aiming to complete encryption and signature in one logical operation step, while the computational complexity and data volume are much smaller than the traditional method of signing first and then encrypting (Y.L. Zheng, "Digital signcryption or how to achieve c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/02
Inventor 宋晓宇韦潜
Owner LANZHOU JIAOTONG UNIV
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