Internet of Things Security: Challenges and Key Issues

Table 3

Advantages and limitations in some IoT-based authentication schemes.

Protocol	Advantages	Limitations
[113]	Is lightweight	Uses only hash function
[114]	Can detect man-in-the-middle attacks	Uses certificates that need an important space in memory
[90]	Can be implemented in real-time IoT networks	Vulnerable
	Based on two-factor authentication
[89]	Can deal against insider attack based on bilinear maps	Needs complex computation
[84]	Surpasses HOTP	Is heavyweight
		Not efficient for IoT devices
[115]	Offers mutual authentication	Vulnerable against some attacks
[116]	Guarantees authentication and session key exchange	Does not cover all IoT service requirements
[74]	Can be used with cloud servers	Cannot resist all attacks
[117]	Very lightweight	Based only on one hash function
[118]	Lightweight mutual authentication	Operates only in CoAP-based IoT environment
[119]	Can be used for authentication protocol for IoT-based RFID systems	The running time of protocol is not very fast