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A Lightweight Online and Offline Certificateless Signature Method

A certificate-free, lightweight technology, applied in the field of Internet of Things security, can solve the problem of insecure remote anonymous authentication protocol

Active Publication Date: 2021-08-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Both of the above issues lead to insecure remote anonymous authentication protocols in IoT-based wireless body area networks.

Method used

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  • A Lightweight Online and Offline Certificateless Signature Method

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Experimental program
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Embodiment 1

[0050] Such as figure 1 As shown, a lightweight online and offline certificateless signature method provided in this embodiment includes the following steps:

[0051] (1) In the initialization phase, the key generation center generates the master private key and public parameters including the master public key:

[0052] (1.1) Choose two with the same prime order p The additive group of G 1 and the multiplicative group G 2 , and the corresponding bilinear map e : G 1 x G 1 → G 2 ;

[0053] (1.2) Select three hash functions , as well as ;

[0054] (1.3) From finite fields Choose a random number from s , from the additive group G 1 randomly selected from P element and calculate g = e ( P , P ); the key generation center puts s as the master private key, and then calculate its master public key P pub = sP ;

[0055] (1.4) Publish the public parameters of the system para =( G 1 , G 2 , e , p , g , P , H 1 , H 2 , H 3 , P pub ). ...

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Abstract

The invention discloses a lightweight online and offline certificateless signature method, which includes the following steps: (1) in the initialization stage, the key generation center generates a master private key and public parameters including the master public key; (2) key generation stage, the sensor nodes in the wireless body area network generate their own public key and complete private key; (3) offline signature stage, before the message is known, the sensor node uses its own public key, master public key, complete private key and secret (4) In the online signature stage, sensor nodes use partial signatures and public parameters to generate a complete signature for the message; (5) In the verification stage, the verifier verifies whether the complete signature of the message is valid. The online and offline certificateless signature method of the present invention can resist forgery attack and public key replacement attack, and is proved to be safe under two kinds of attacks of malicious client and malicious key generation center.

Description

technical field [0001] The invention relates to the technical field of Internet of Things security, in particular to a lightweight online and offline certificateless signature method applied to the Internet of Things. Background technique [0002] The Internet of Things is considered to be one of the most important technological revolutions in this century, and has been widely used in today's society, such as smart medical systems, smart grids, smart transportation, smart cities, etc. In particular, smart healthcare applications in IoT are gaining attention as they help in providing services to patients remotely. [0003] The wireless body area network based on the Internet of Things is composed of various wearable sensors deployed around the human body, which are connected by wireless communication technology. The sensor collects important physiological and environmental information of the human body; then uses the personal terminal to transmit the information to the remot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04L9/06H04L9/32H04L29/08
CPCH04L9/0643H04L9/0861H04L9/0869H04L9/3247H04L67/12
Inventor 廖永建梁艺宽王勇王栋吴宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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