Table 7.

Comparison of security features.

Security Features	Sureshkumar et al. [7]	Garg et al. [33]	Hu et al. [5]	Aghapour et al. [10]	Ours
Provide Mutual Authentication	O	O	O	O	O
Resist Replay Attack	O	O	O	O	O
Resist Smart Meter Impersonation Attack	O	O	O	O	O
Resist Extraction of the Secret Key	O	O	O	O	O
Resist Inferrability of the Message	O	O	O	X	O
Resist Message Altering	O	O	O	X	O
Resist Injection Attack	O	O	O	O	O
Provide Forward Secrecy	O	O	O	O	O
Provide One-time Pad Key	X	O	O	O	O
Resist Man-in-the-Middle Attack	O	O	O	X	O