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Attribute-based access control system in a blockchain network and method thereof
Attribute-based access control system in a blockchain network and method thereof
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机译：基于区块链网络的基于属性的访问控制系统及其方法
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摘要
The present invention relates to an access right control system in a blockchain network including a plurality of nodes. The access right control system, a central node for generating a public key and a private key; an attribute node that verifies the user attribute and issues a one-time token to the user who has succeeded in the verification; A smart contract distributed by an information subject, comprising: a first smart contract that encrypts personal information with an access policy managed by an attribute node and a public key distributed by a central node to generate a ciphertext and record it in a block chain; As a smart contract distributed by information users, it requests access to the ciphertext of the block chain, receives a one-time token from the attribute node according to the access request, receives a secret key from the central node using the one-time token, and the secret and a second smart contract that decrypts the ciphertext using the key, and encrypts personal information based on the attribute, stores it in the distributed ledger, and decrypts the encrypted information.
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