Using BDH for the Message Authentication in VANET

Table 5

The comparison of property.

Property	Method
	[4]	[5]	[6]	[7]	[8]	Proposed method
Security and privacy preservation	Yes	Yes	Yes	Yes	Yes	Yes
Do need the certificate	No	No	No	No	No	No
Do need the help of RSU for authentication	No	No	No	No	No	No
PKI-based system	No	No	No	Yes	No	No
Communication within different RSU	Yes	No	Yes	Yes	Yes	Yes
Privacy communicate	Yes	Yes	Yes	Yes	No	Yes