A hierarchical group key management scheme for secure multicast increasing efficiency of key distribution in leave operation

2007 ◽  
Vol 51 (17) ◽  
pp. 4727-4743 ◽  
Author(s):  
Alireza Nemaney Pour ◽  
Kazuya Kumekawa ◽  
Toshihiko Kato ◽  
Shuichi Itoh
Keyword(s):  
Key Management ◽  
Key Distribution ◽  
Group Key Management ◽  
Secure Multicast ◽  
Group Key ◽  
Management Scheme ◽  
Hierarchical Group ◽  
Key Management Scheme

scholarly journals Group Key Management Scheme for Multicast Communication Fog Computing Networks

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1300
Author(s):  
Mai Trung Dong ◽  
Haitao Xu
Keyword(s):  
Key Management ◽  
Fog Computing ◽  
Threshold Value ◽  
Group Key Management ◽  
Multicast Communication ◽  
Secret Key ◽  
Group Key ◽  
Management Scheme ◽  
Operation Process ◽  
Key Management Scheme

In group key management, the implementation of encryption often fails because multicast communication does not provide reliable linkage. In this paper, a new group key management scheme is proposed for multicast communication in fog computing networks. In the proposed scheme, any legal fog user belonging to a fog node will be able to decrypt a ciphertext encrypted by a secret shared key. The shared secret key is divided into key segments. In the rekeying operation process, each key segment is split into two factors with its shared production mechanism. The key updates are required to belong to the fog provider or the group management device. Fog users will have independent key segments unchanged. Then, the cost, the message of rekeying, and the dependence on credible channels will be decreased. This method can resist collusion attacks and ensure backward security and forward security, even if the number of users leaving is larger than the threshold value. Our scheme is also suitable for untrusted affiliate networks.

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