Ultralightweight RFID Authentication Protocols for Low-Cost Passive RFID Tags

Table 3

Mutual authentication protocol classification.

Protocol Classification	EPC Class association	Examples
Heavyweight	Class 5/4	Godor and Imre [22], Liu et al [23]
Middleweight	Class 3	Wang et al [24], Chou [25], Zhang and Qi [26]
Lightweight	Class 2	Lee et al [27], Liao et al [28]
Ultralightweight	Class 1/0	Tewari and Gupta [29], SLAP [30], KMAP [31]