Research Article
[Retracted] HGKM: An Efficient Hybrid Group Key Management for Unmanned Autonomous Vehicles MBN in Wireless Network Environment
Table 7
The computation cost of the leave action for the TKC.
| Group key management approaches | Computation cost |
| HGKM | Situation(i) one member departs from one member element | | Situation(ii) one leader contestant leaves that group | | Situation(iii) one leader leaves that group also one leadership contestant is available to replace the current leader | | Situation(iv) one leader leaves that group, and no leadership contestant is available to replace the current leader. | | LKH | | OFT | H |
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: the tallest of that operation unit present in HGKM. h: highest of key tree group in OFT and LKH. : the number of leader units in HGKM. |