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: 2020-02-18
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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  • Lightweight online and offline certificateless signature method

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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 additive groups G with the same prime order p 1 and the multiplicative group G 2 , and the corresponding bilinear map e: G 1 ×G 1 →G 2 ;

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

[0054] (1.3) From finite fields Select a random number s from the additive group G 1 Randomly select P elements and calculate g=e(P,P); the key generation center uses s as the master private key, and then calculates its master public key P pub = sP;

[0055] (1.4) Public parameter Para=(G 1 ,G 2 ,e,p,g,P,H 1 ,H 2 ,H 3 ,P pub )

[0056] (2) In the key generation stage, the user's sensor node in the wireless body area network generate...

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Abstract

The invention discloses a lightweight online and offline certificateless signature method, which comprises the following steps: (1) in an initialization stage, a key generation center generates a mainprivate key and a public parameter containing a main public key; (2) a key generation stage: a sensor node in the wireless body area network generates a public key and a complete private key of the sensor node; (3) an offline signature stage: before the message is known, the sensor node generates a partial signature by using the own public key, the main public key, the complete private key and the secret value; (4) in an online signature stage, the sensor nodes use partial signatures and public parameters to generate complete signatures for the messages; and (5) a verification stage: the verifier verifies whether the complete signature of the message is valid or not. The online and offline certificateless signature method provided by the invention can resist forgery attacks and public keyreplacement attacks, and is proved to be safe under two attacks of a malicious client and a 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 Applications(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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