A distributed information sharing method and system based on re-encryption

Abstract

The invention discloses a distributed information sharing method and system based on re-encryption. The method includes: an information access node sends an access application for shared information to an information sharing node; The address of the encrypted storage node that stores the encrypted shared information; the information access node accesses the encrypted storage node, and downloads and obtains the stored information, and the stored information includes encrypted shared information; the information accessed node accesses the third party The proxy node obtains a shared key generated based on the re-encryption key; the information access node decrypts the encrypted shared information according to the shared key to obtain the shared information; the method and system establish a connection with a third-party agent, Based on the re-encryption key, the third-party agent converts the foreign-domain user certificate into the local-domain certificate, which can effectively improve the efficiency of user authentication and resource sharing, and avoid the high cost of repeated authentication.

Description

technical field [0001] The present invention relates to the field of block chain technology, and more specifically, to a distributed information sharing method and system based on re-encryption. Background technique [0002] At present, distributed ledgers based on blockchain technology are developing rapidly, various applications emerge in an endless stream, and different ledger systems are beginning to show a trend of integration and interconnection. More and more services need to be interconnected with other ledgers, and cross-system identity authentication and foreign services are gradually increasing. Traditional "username / password" combination authentication, kerberos identity authentication, public key infrastructure PKI and other technologies have the problems of low security and low verification efficiency, and are not suitable for the increasingly complex and integrated multi-distributed ledger system. Contents of the invention [0003] In order to solve the pro...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low security and low verification efficiency in the existing distributed ledgers based on blockchain technology in the background technology, the present invention provides a distributed information sharing method based on re-encryption and a system, the method and the system establish a connection with a third-party agent, and based on the re-encryption key, the third-party agent converts the foreign-domain user certificate into the local-domain certificate to realize cross-domain resource access; the re-encryption-based distribution Formal information sharing methods include:

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