Cryptanalysis of an Efficient and Secure Certificateless Aggregate Signature-Based Authentication Scheme for Vehicular Ad Hoc Networks

Table 1

Summary of notations.

Symbols	Descriptions
	A prime number
	A finite field of order p
G	A cyclic elliptic curve group
P	A generator of G
	Hash functions
(s, b)	Two master secret keys
	Two master public keys
	The real identity of a vehicle
	The pseudoidentity of
	The partial private key of
xi	The secret value of
	The public key of
mi	A message
	A single signature on mi
	An aggregate signature
	The validity period of
1,2	Type I and type II adversaries