The Lightweight RFID Grouping-Proof Protocols with Identity Authentication and Forward Security

Table 2

The comparison of some typical grouping-proof protocols with our protocols.

Protocols	Privacy	Anonymity	Trace attack	Replay attack	Forward security	DoS attack	The number of tag groups
Ref. [2]	✕	✕	✕	✕	✕	—	One (only two tags)
Ref. [15]	✓	✓	✓	✓	✓	✕	One
Ref. [16]	✕	✕	✕	✓	✓	✕	Multiple
Ref. [18]	✓	✓	✓	✓	✕	—	One (only two tags)
Ref. [19]	✓	✓	✕	✓	✕	—	One (only two tags)
Ours	✓	✓	✓	✓	✓	✓	Multiple