Using BDH for the Message Authentication in VANET

Table 6

Execution time in milliseconds.

Notations	Descriptions	Execution time (ms)
	Pairing operation	≈4.5
	Point multiplication	≈0.6
	Field exponentiation	≈0.54
ASE	RSA encryption	0.19
ASD	RSA decryption	4.65
HMAC	HMAC	0.002
SE	AES encryption	<0.19
SD	AES decryption	<4.65