Attribute encryption access control system and method based on block chain

An access control and attribute encryption technology, applied in transmission systems, digital transmission systems, and key distribution, which can solve the problems of long waiting time for a transaction and inability to update data in time.

Active Publication Date: 2021-05-14
XIAN UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly uses the PoW or PoS consensus mechanism, which leads to the inability to up

Method used

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  • Attribute encryption access control system and method based on block chain
  • Attribute encryption access control system and method based on block chain
  • Attribute encryption access control system and method based on block chain

Examples

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Embodiment Construction

[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0042] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities ...

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Abstract

The embodiment of the invention relates to an attribute encryption access control system and method based on a block chain. The system comprises: a block chain system which comprises a plurality of attribute authorization mechanisms and is used for generating public parameters and master key data after initialization operation and sending the public parameters; a data accessor which interacts with the block chain system; Internet-of-Things equipment which interacts with the block chain system; and a cloud server which interacts with the data accessor and the Internet-of-Things equipment, and is used for receiving and storing the ciphertext data and the transaction number data sent by the Internet-of-Things equipment, and receiving a request ciphertext instruction sent by the data accessor. According to the multi-centralization and non-tampering characteristics of the block chain, a trusted third party can enable a plurality of attribute authorization mechanisms and data owners to participate in attribute endorsement auditing by using the alliance chain, and the ciphertext hash value is stored; and the attribute-based fine-grained access control of the user is realized through an attribute encryption and symmetric encryption hybrid mechanism of a hidden ciphertext strategy.

Description

technical field [0001] Embodiments of the present disclosure relate to the technical field of data fine-grained access control in the Internet of Things, and in particular to a blockchain-based attribute encryption access control system and method. Background technique [0002] The Internet of Things (IoT) plays an important role in the current society, and today, IoT technology has been widely used in various fields from industrial applications to personal life, such as healthcare, industrial equipment, smart home, etc. The proliferation of IoT applications and services has brought great convenience to social development and our daily lives. However, the rapid deployment of IoT devices has also caused some security issues. IoT devices generate and transmit a large amount of sensitive data, and a large number of complex users may access these data, resulting in data access control and security issues. [0003] Blockchain (Blockchain) is a new decentralized infrastructure an...

Claims

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Application Information

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IPC IPC(8): H04L9/32H04L9/08H04L29/06H04L29/08G16Y40/50G16Y30/10
CPCH04L9/3247H04L9/3236H04L9/0825H04L63/045H04L67/12G16Y30/10G16Y40/50H04L9/50
Inventor 郭瑞庄朝源秦宝东杨耿
Owner XIAN UNIV OF POSTS & TELECOMM
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