Grouping-Based Reliable Privacy Preservation for Blockchain-Assisted Data Aggregation in Mobile Crowdsensing

Algorithm 1

Reliable privacy-preserving data aggregation (RPPDA).

	Input: The private information of node .
	Output: The final aggregation result .
(1)	are grouped equally into .
(2)	For  = 1 to do
(3)	.
(4)	The nodes collaborate to generate the zero-sum noise .
(5)	For  = 1 to do
(6)	.
(7)	Store the noise-added data in the private blockchain .
(8)	End
(9)	.
(10)	End
(11)	The nodes collaborate to generate the zero-sum noise .
(12)	For  = 1 to do
(13)	.
(14)	End
(15)	.