2 results about "Group key management" patented technology

The application discloses a kind of unmanned aerial vehicle self-organizing network group key management methods supporting member dynamic joining, quitting and key recovery, belongs to unmanned aerial vehicle self-organizing network security communication technical field.The method includes: system initialization;UAV node is registered, and based on physically unclonable function generation and equipment binding key material;Utilize Cuckoo filter to quickly screen legal members;Two-way authentication and key exchange process are executed between adjacent nodes and establish edge session key;Group key derivation is realized based on edge session key;When node is lost, group key recovery is executed;When member dynamic joins, quits or is revoked, group key update is executed.The method can reduce authentication and key management overhead, improve the processing efficiency when node recovery and member change, and ensure the forward security, backward security, integrity and confidentiality of group communication.

The application discloses a kind of unmanned aerial vehicle cluster decentralized inter-group key management method and system based on attribute encryption, which comprises the following steps: S1, initialization and main public key generation;S2, unmanned aerial vehicle attribute private key construction;S3, attribute encryption based on access policy and group session key encapsulation;S4, group session key decryption and recovery based on attribute private key;In addition, when unmanned aerial vehicle joins, exits or is revoked, the method also updates the key through the node revocation and key update steps, so that unauthorized nodes cannot obtain historical keys and cannot decrypt subsequent data, realizing the rapid trusted update of key.The application avoids the single point failure problem through the decentralized key generation and verification mechanism, combines the verifiable and tamper-proof characteristics of blockchain, and the attribute-based access control and dynamic key update strategy, improves the efficiency and credibility of inter-unmanned aerial vehicle cluster cooperative communication, and guarantees the security of data sharing in heterogeneous unmanned aerial vehicle network environment.