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Smart city-oriented blockchain identity authentication and access control method and system
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An access control and identity authentication technology, applied in digital data authentication, digital data protection, etc., can solve problems such as single faults, and achieve the effect of reducing storage pressure, good supervision and standardization of user access
Pending Publication Date: 2021-04-16
QILU UNIV OF TECH
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[0008] Aiming at the needs and deficiencies of the current technological development, the present invention provides a smart city-oriented block chain identity authentication and access control method and system to better access government information after user authentication and solve authentication problems. Single failure, and privacy security issues caused by unrestricted access
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Embodiment 1
[0059]This embodiment proposes a block chain identity authentication and access control method for smart cities, and applies IPFS systems in the government work of smart cities. The implementation of the method includes the block chain identity authentication section and the block chain access control section.
[0060](1) Combined withfigure 1 , In the block chain identity authentication section:
[0061]S11, the user terminal and the government terminal use the elliptic curve encryptionalgorithm to generate private key K, based on a given elliptic curve E and known base point g, the private key k and the base point G is a public key, and the public key is The value is an authentication ID that accesses the user terminal.
[0062]S12, the user enters information through the user terminal, and the government terminal registers the input information of the user terminal to the block of the block chain.
[0063]S13, the user terminal sends transaction information to the intelligent contract accou...
Embodiment 2
[0073]Joinimage 3This embodiment proposes a block chain identity authentication and access control system for smart cities, which involves the IPFS system, user terminal, government terminal, and multiple government terminals in smart urban government work. The block chain established by multiple government terminals. The system also relates to algorithm modules, intelligent contracts, verification modules, and ABAC intelligent contracts, where
[0074]The user terminal and the government terminal use the algorithm module to generate a public key, and the algorithm module uses the hash value of the public key as the authentication ID of the access user terminal.
[0075]Intelligent contracts are used to manage government terminals,
[0076]The verification module is deployed in the block chain, and the digital signature technology verifies whether the transaction information is issued by the user terminal.
[0077]ABAC intelligent contract, that is, ABAC is implemented by intelligent contract f...
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Abstract
The invention discloses a smart city-oriented blockchain identity authentication and access control method and system, and relates to the technical field of identity authentication and access control, comprising 1) identity authentication and 2) access control. In the step 1), using an encryptionalgorithm between a user terminal and a government affair terminal to generate a public key, and using a hash value of the public key as an authentication ID of an access user terminal; inputting information at the user terminal, and registering the information into the block by the government affair terminal; and enabling the user terminal to establish connection with the government affair terminal, to obtain the reading and operation authority of the government affair terminal, and the nodes in the block verifying the legality of the two terminals. In the step 2), a user terminal sends a request and calls an ABAC intelligent contract; and the ABAC smart contract inquires the IPFS system about the file required by the current access operation of the user terminal, judges the permission of the user terminal according to a return result of the IPFS system, and calls a smart contract execution result. According to the invention, the privacy security problem caused by no limitation to access when the identity authentication fails is solved.
Description
Technical field[0001]The present invention relates to the field of identity authentication and access control, and is specifically a block chain identity authentication and access control method and a system for smart cities.Background technique[0002]In recent years, BLOCKCHAIN and SMART Contract are expanded as distributed classification technology, which is positively changing business models such as Internet and smart cities, and even different aspects of identity authentication and access control processes. The intelligent contract is added to the technology by introducing an Ethernet. Based on the block chain, the use of smart cities under the background of smart cities is still very limited, lack of solid evidence. The challenges faced by the block chain are mainly expressed as technological aspects, security, and flexibility, while lack of supervision and management is considered major obstacles.[0003]As a safety mechanism, identity can be tested and certified to the identi...
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