Silence is Golden: A Source Location Privacy Scheme for Wireless Sensor Networks Based on Silent Nodes

Algorithm 1

Node receives normal messages.

(1)	receive Normal
	► generating from the source starts from 1.
	► is the hop distance of silent nodes from the source to the sink.
(2)	.
(3)	.
(4)	switch do ► is the state transformation approach
(5)	case
(6)	.
(7)	break
(8)	case
(9)	.
(10)	break
(11)	case
(12)	.
(13)	break
(14)	case
(15)	.
(16)	break
(17)	ifthen
(18)	pass ► Discard the received message
(19)	else
(20)	BCAST Normal
(21)	end if