An Enhanced RFID-Based Authentication Protocol using PUF for Vehicular Cloud Computing

Table 3

Key size comparison between ECC and RSA.

S. No	ECC key size (bits)	RSA key size (bits)	Key size ratio
1	163	1024	1 : 6
2	256	3072	1 : 12
3	384	7680	1 : 20
4	512	15360	1 : 30