CP-ABE access control scheme based on block chain
A CP-ABE, access control technology, applied in the field of access control based on attribute encryption, can solve problems such as hidden dangers, reduce workload, ensure openness and transparency, and solve the problem of single point of failure.
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[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0023] Such as figure 1 The architecture shown shows the overall process of the present invention:
[0024] Step 1: The newly added attribute authority should initiate a registration request to the blockchain, send its subject, valid time, and public key through a smart contract, and the certification center will issue an identity certificate after it passes the certification.
[0025] Step 2: The data owner requests an encryption key from the AA of the domain, and AA returns an encryption key after the request is passed;
[0026] Step 3: The data owner encrypts the data file with an encryption key. After the data owner encrypts the plain text, he selects the RSA key pair, uses the public key to encrypt the cipher text again, and then uploads the cipher text to the cloud service provider. Publish the private key to the ...
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