Lightweight Mutual Authentication Scheme Enabled by Stateless Blockchain for UAV Networks

Algorithm 2

Second subvector commitment build/update.

	Input: Identity vector commitment, , related UAV ID, aggregation flag.
	Output: Aggregation of the uncontacted UAVs’ proof.
(1)	# assign committee members, monitoring all UAVs’ fly status.
(2)	;  = 5 s;
(3)	#counter: detect if UAV is online.
(4)	= 0;
(5)	= 0;
(6)	# mission executing phase, are hardcode;
(7)	#monitoring start.
(8)	while 1 do
(9)	#activating leaving UAV request
(10)
(11)	#calculating uncontacted times
(12)
(13)	if Aggregation Flag then
(14)
(15)	else
(16)
(17)	end if
(18)	end while
(19)	while aggregation flag is true do
(20)	if++ then
(21)
(22)	= 0;
(23)	end if
(24)	end while
(25)	#current turn expired,
(26)	In the header of committee:
(27)
(28)
(29)
(30)	In UAV nodes:
(31)	for uav_i in length of do
(32)	#when receiving new block from authority committee
(33)	if new_block is constructed correctly then
(34)
(35)	else
(36)	abort new block
(37)	end if
(38)	end for