A Secure Three-Factor Multiserver Authentication Protocol against the Honest-But-Curious Servers

Table 5

The security comparison.

	S1	S2	S3	S4	S5	S6	our scheme
	No	Yes	Yes	Yes	No	Yes	Yes
	Yes	Yes	Yes	/	Yes	Yes	Yes
	No	No	/	/	No	Yes	Yes
	No	No	Yes	Yes	No	Yes	Yes
	Yes	Yes	/	/	Yes	Yes	Yes
	No	No	/	/	Yes	Yes	Yes
	No	No	Yes	Yes	Yes	Yes	Yes
	Yes	Yes	Yes	Yes	Yes	Yes	Yes
	No	Yes	Yes	Yes	Yes	Yes	Yes
	No	Yes	Yes	/	Yes	Yes	Yes