Hybrid Secure Authentication and Key Exchange Scheme for M2M Home Networks

Table 3

Notation of Sun et al.’s scheme [3].

Notation	Description
	The secret key of the M2M server
	Mobile user’s ID
	M2M server’s ID
	User’s password
	The session key between a user and M2M server
	Home gateway ID
	Status flag of the mobile user
	Cryptographic hash function
	Hashing of the concatenation of and
	Most significant bits of string
	Using AES function to encrypt a with b as the key
	Using AES function to decrypt a with b as the key