Key negotiation method and device, electronic equipment and storage medium

Abstract

The invention provides a secret key negotiation method and device, electronic equipment and a storage medium, and the method comprises the steps: generating a global public key and an attribute authority public key, and transmitting the global public key and the attribute authority public key to a first edge server, the first edge server generates a ciphertext from the to-be-transmitted data according to the global public key, the attribute authority public key and the first public key; updating a private key according to a pre-generated initial private key to obtain an attribute authority private key; and sending the attribute authority private key to the second edge server, so that the second edge server decrypts the ciphertext according to the attribute authority private key and the second private key to obtain a semi-decrypted ciphertext, and the target terminal decrypts the semi-decrypted ciphertext according to the first private key to obtain the to-be-transmitted data. According to the technical scheme provided by the embodiment of the invention, the encryption and decryption rate is improved through the edge server, and the security of the private key is ensured by updating the private key through multiple parties.

Description

technical field [0001] The present application relates to the field of network technology and security technology, in particular, to a secret key negotiation method, device, electronic equipment and storage medium. Background technique [0002] With the rapid development of Internet technology, the demand for information sharing in the network is also growing rapidly, and the increase in demand for information sharing has also driven the requirements for data calculation and processing speed, transmission speed and data transmission security in information sharing. improvement. [0003] In the field of data transmission, in order to ensure the safe transmission and access of data, the secret key management method is often used to set different access rights for the confidentiality of data. As long as the attributes of the decryptor meet the access policy, the data can be decrypted to avoid third-party Untrusted server threats, but the existing secret key management methods ...

AI Technical Summary

Problems solved by technology

[0003] In the field of data transmission, in order to ensure the safe transmission and access of data, the secret key management method is often used to set different access rights for the confidentiality of data. As long as the attributes of the decryptor meet the access policy, the data can be decrypted to avoid third-party Untrusted server threats, but the existing secret key management methods cannot meet the increasing data computing speed requirements. Edge computing is a distributed computing architecture that can be used on the network edge side of the data source to improve data processing data, but In edge computing, the data sharing party of one edge node may need to access the edge node data of another data sharing party, which may easily lead to hidden dangers in data access

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