Table 4.

Security features comparison for the proposed key management protocol and other shared secret related works.

Security Features	Shamir Secret [11]	Ulutas et al. [17]	Harn et al. [20]	Liu et al. [21]	Liu et al. [22]	Meng et al. [28]	Liu et al. [29]	The Proposed
Authentication using HMAC	No	No	No	No	No	No	No	Yes
Key updating	No	No	No	No	No	No	No	Yes
Verification of secret shares	No	No	Yes	Yes	Yes	Yes	No	No
Secure channel requirement	Yes	Yes	No	Yes	Yes	Yes	Yes	No
Centralized implementation	No	No	Yes	Yes	Yes	Yes	Yes	Yes
Based Shamir Secret Share	Yes	Yes	No	No	Yes	No	Yes	Yes
$\left(t,n\right)$ secret sharing	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Group member broadcasting	Yes	Yes	Yes	Yes	No	Yes	Yes	No
Unconditionally secure	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes