Password Authentication Based on Fractal Coding Scheme

Table 2

Security comparison of the proposed scheme against some password authentication scheme.

	Our proposed method	Lamport [2]	Hwang and Li’s [4]	Lee et al.’s [8]
Guessing attack	Yes	No	No	Yes
Replay attack	Yes	No	No	Yes
Stolen-verifier attack	Yes	No	Yes	Yes
Denial of service attack	Yes	No	Yes	Yes
Man in the Middle attack	Yes	No	No	No