Attacks and Solutions for a Two-Factor Authentication Protocol for Wireless Body Area Networks

Table 2

Comparisons of security.

Security properties	Fotouhi et al. [22]	Kumari et al. [32]	Srinivas et al. [33]	Gope and Hwang [34]	Ours
Perfect forward secrecy	✓	✓	✓	✓	✓
Resists impersonation attacks	✓	✓	✓	✓	✓
Resists offline password-guessing attacks	✓	✕	✕	✕	✓
User anonymity security	✓	✓	✓	✓	✓
Mutual authentication	✓	✓	✓	✓	✓
Resists replay attacks	✕	✓	✓	✓	✓
Resists sensor-capture attacks	✕	✕	✓	✓	✓
Resists known session temporary information attacks	✓	×	✓	✓	✓
Resists relay attacks	✓	✓	✓	✓	✓
Resists man-in-the-middle attacks	✓	✕	✓	✓	✓
Provable security	✕	✕	✕	✕	✓